1
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Zeng Z, Wang D, Cao J, He W, Zhang B, Zhao C, Liu D, Liu S, Pan J, Chen T, Jiao S, Fang X, Zhao L, Wang J. Self-Assembled BiGaSeAs Composite Superlattice-Structured Nanowire for Broad-Band Photodetection. ACS APPLIED MATERIALS & INTERFACES 2024; 16:16678-16686. [PMID: 38503721 DOI: 10.1021/acsami.3c18673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Photodetectors with a broad-band response range are widely used in many fields and are regarded as pivotal components of the modern miniaturized electronics industry. However, commercial broad-band photodetectors composed of traditional bulk semiconductor materials are still limited by complex preparation techniques, high costs, and a lack of mechanical strength and flexibility, which are difficult to satisfy the increasing demand for flexible and wearable optoelectronics. Therefore, researchers have been devoted to finding new strategies to obtain flexible, stable, and high-performance broad-band photodetectors. In this work, a novel self-assembled BiGaSeAs composite superlattice-structured nanowire was developed with a simple chemical vapor deposition method for easy fabrication. After the device assembling, the photodetector showed outstanding performance in terms of obvious Ion/Ioff (13.9), broad-band photoresponse (365-940 nm), excellent responsivity (1007.67 A/W), high detectivity (9.38 × 109 Jones), and rapid response (21 and 23 ms). The formation of microheterojunctions among various materials inside the nanowires also contributed to their extended broad-spectrum response and outstanding detection ability. These results indicate that the BiGaSeAs nanowires have potential applications in the field of flexible and wearable electronics.
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Affiliation(s)
- Zhi Zeng
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Dongbo Wang
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Jiamu Cao
- School of Astronautics, Harbin Institute of Technology, Harbin 150001, China
| | - Wen He
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Bingke Zhang
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Chenchen Zhao
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Donghao Liu
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Sihang Liu
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Jingwen Pan
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Tianyuan Chen
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Shujie Jiao
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Xuan Fang
- School of Science, State Key Laboratory High Power Semicond Lasers, Changchun University Science and Technology, Changchun 130022, China
| | - Liancheng Zhao
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Jinzhong Wang
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
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2
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Noureen S, Rehman SU, Batool SM, Ali J, Zhang Q, Batool SS, Wang Y, Li C. Tailoring Bi 2Se 3 Topological Insulator for Visible-NIR Photodetectors with Schottky Contacts Using Liquid Phase Exfoliation. ACS APPLIED MATERIALS & INTERFACES 2024; 16:8158-8168. [PMID: 38301155 DOI: 10.1021/acsami.3c15315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Layered semiconductors of the V-VI group have attracted considerable attention in optoelectronic applications owing to their atomically thin structures. They offer thickness-dependent optical and electronic properties, promising ultrafast response time, and high sensitivity. Compared to the bulk, 2D bismuth selenide (Bi2Se3) is recently considered a highly promising material. In this study, 2D nanosheets are synthesized by prolonged sonication in two different solvents, such as N-methyl-2-pyrrolidone (NMP) and chitosan-acetic acid solution (CS-HAc), using the liquid-phase exfoliation (LPE) method. X-ray diffraction confirms the amorphous nature of exfoliated 2D nanosheets with maximum peak intensity at the same position (015) crystal plane as that obtained in its bulk counterpart. SEM confirms the thin 2D nanosheet-like morphology. Successful exfoliation of Bi2Se3 nanosheets up to five layers is achieved using CS-HAc solvent. The as-synthesized 2D nanosheets in different solvents are employed to fabricate the photodetector. At minimum selected power density, the photodetector fabricated using exfoliated ultrathin 2D nanosheets exhibits the highest range of responsivity, varying from 15 to 2.5 mA/W, and detectivity ranging from 2.83 × 109 to 6.37 × 107. Ultrathin 2D Bi2Se3 nanosheets have fast rise and fall times, ranging from 0.01 to 0.12 and 0.01 to 0.06 s, respectively, at different wavelengths. Ultrathin Bi2Se3 nanosheets have improved photodetection parameters as compared to multilayered nanosheets due to the high surface to volume ratio, reduced recombination and trapping of charge carrier, improved carrier confinement, and faster carrier transport due to the thin layer.
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Affiliation(s)
- Sadaf Noureen
- School of Science, Minzu University of China, Beijing 100081, China
- Optoelectronic Research Laboratory (OERL), Department of Physics, COMSATS University Islamabad, Park Road, Chak Shahzad, Islamabad 45550, Pakistan
| | - Sajid Ur Rehman
- School of Science, Minzu University of China, Beijing 100081, China
| | - Syeda Maria Batool
- Electric Material and Nanotechnology Lab, North Dakota State University, Fargo, North Dakota 58102, United States
| | - Junaid Ali
- Optoelectronic Research Laboratory (OERL), Department of Physics, COMSATS University Islamabad, Park Road, Chak Shahzad, Islamabad 45550, Pakistan
| | - Qifeng Zhang
- Electric Material and Nanotechnology Lab, North Dakota State University, Fargo, North Dakota 58102, United States
| | - Syeda Sitwat Batool
- School of Science, Minzu University of China, Beijing 100081, China
- Optoelectronic Research Laboratory (OERL), Department of Physics, COMSATS University Islamabad, Park Road, Chak Shahzad, Islamabad 45550, Pakistan
| | - Yang Wang
- School of Science, Minzu University of China, Beijing 100081, China
- Optoelectronics Research Center, Minzu University of China, Beijing 100081, China
| | - Chuanbo Li
- School of Science, Minzu University of China, Beijing 100081, China
- Optoelectronics Research Center, Minzu University of China, Beijing 100081, China
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3
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Li J, Li Q, Mi J, Xu Z, Xie Y, Tang W, Zhu H, Li L, Tong L. Ultrabroadband High Photoresponsivity at Room Temperature Based on Quasi-1D Pseudogap System (TaSe 4 ) 2 I. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2302886. [PMID: 38064179 PMCID: PMC10870056 DOI: 10.1002/advs.202302886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 11/21/2023] [Indexed: 02/17/2024]
Abstract
Narrow bandgap materials have garnered significant attention within the field of broadband photodetection. However, the performance is impeded by diminished absorption near the bandgap, resulting in a rapid decline in photoresponsivity within the mid-wave infrared (MWIR) and long-wave infrared (LWIR) regions. Furthermore, they mostly worked in cryogenic temperature. Here, without the assistance of any complex structure and special environment, it is realized high responsivity covering ultra-broadband wavelength range (Ultraviolet (UV) to LWIR) in a single quasi-1D pseudogap (PG) system (TaSe4 )2 I nanoribbon, especially high responsivity (From 23.9 to 8.31 A W-1 ) within MWIR and LWIR region at room temperature (RT). Through direct probing the carrier relaxation process with broadband time-resolved transient absorption spectrum measurement, the underlying mechanism of majorly photoconductive effect is revealed, which causes an increased spectral weight extended to PG region. This work paves the way for realizing high-performance uncooled MWIR and LWIR detection by using quasi-1D PG materials.
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Affiliation(s)
- Jialin Li
- State Key Laboratory of Modern Optical InstrumentationCollege of Optical Science and EngineeringZhejiang UniversityHangzhou310027China
- Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou310024China
| | - Qing Li
- Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou310024China
| | - Junjian Mi
- Zhejiang Province Key Laboratory of Quantum Technology and DeviceDepartment of PhysicsZhejiang UniversityHangzhou310027China
| | - Zhuan Xu
- Zhejiang Province Key Laboratory of Quantum Technology and DeviceDepartment of PhysicsZhejiang UniversityHangzhou310027China
| | - Yu Xie
- Research Center for Humanoid SensingZhejiang LabHangzhou311100China
| | - Wei Tang
- State Key Laboratory of Modern Optical InstrumentationCollege of Optical Science and EngineeringZhejiang UniversityHangzhou310027China
| | - Huanfeng Zhu
- State Key Laboratory of Modern Optical InstrumentationCollege of Optical Science and EngineeringZhejiang UniversityHangzhou310027China
- Intelligent Optics and Photonics Research CenterJiaxing Research Institute Zhejiang UniversityJiaxing314000China
- Jiaxing Key Laboratory of Photonic Sensing and Intelligent ImagingJiaxing Institute Zhejiang UniversityJiaxing314000China
| | - Linjun Li
- State Key Laboratory of Modern Optical InstrumentationCollege of Optical Science and EngineeringZhejiang UniversityHangzhou310027China
- Intelligent Optics and Photonics Research CenterJiaxing Research Institute Zhejiang UniversityJiaxing314000China
- Jiaxing Key Laboratory of Photonic Sensing and Intelligent ImagingJiaxing Institute Zhejiang UniversityJiaxing314000China
| | - Limin Tong
- State Key Laboratory of Modern Optical InstrumentationCollege of Optical Science and EngineeringZhejiang UniversityHangzhou310027China
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4
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Cheng J, Luo Y, Hao Y, Han H, Hu X, Yang Y, Long X, He J, Zhang P, Zeng R, Xu M, Chen S. A responsive organic probe based photoelectrochemical sensor for hydrazine detection. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 305:123463. [PMID: 37778175 DOI: 10.1016/j.saa.2023.123463] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/10/2023] [Accepted: 09/25/2023] [Indexed: 10/03/2023]
Abstract
This study developed a new photoelectrochemical (PEC) sensor for the detection of the hydrazine (N2H4, HZ) based on a donor-π-bridge-acceptor (D-π-A) configuration organic photoactive dye (Dye-HZ). The dye was covalently immobilized on an FTO/TiO2 (FTO: fluorine-doped tin oxide) substrate, resulting in a photoanode FTO/TiO2/Dye-HZ that exhibits a specific PEC response to N2H4. Hydrazine reacts with the acetyl group in the Dye-HZ molecule, leading to its removal and the formation of a hydroxy group. The hydroxy group dissociates a hydrogen ion, forming a phenoxide anion with strong electron-donating characteristics. As a result, the dye molecule exhibits a strong intramolecular charge transfer effect, significantly enhancing absorbance and photoelectric response under visible light irradiation, leading to a remarkable increase in photocurrent and enabling highly sensitive detection of hydrazine. Furthermore, the PEC sensor demonstrates excellent selectivity and can be applied for the detection of hydrazine in real water samples. This study presents an innovative PEC sensing approach for hydrazine based on responsive photoactive molecules, providing new insights for PEC detection of other environmental pollutants.
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Affiliation(s)
- Jiayuan Cheng
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Yuanjian Luo
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Yuanqiang Hao
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China; Henan Key Laboratory of Biomolecular Recognition and Sensing, Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China.
| | - Huabo Han
- Henan Key Laboratory of Biomolecular Recognition and Sensing, Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Xiaoyu Hu
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Yuxuan Yang
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Xiangkun Long
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Jing He
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Peisheng Zhang
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Rongjin Zeng
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Maotian Xu
- Henan Key Laboratory of Biomolecular Recognition and Sensing, Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Shu Chen
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
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5
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Kulkarni AY, Karmakar G, Shah AY, Nigam S, Kumbhare G, Tyagi A, Butcher RJ, Chauhan RS, Kumar NN. Controlled synthesis of photoresponsive bismuthinite (Bi 2S 3) nanostructures mediated through a new 1D bismuth-pyrimidylthiolate coordination polymer as a molecular precursor. Dalton Trans 2023; 52:16224-16234. [PMID: 37853758 DOI: 10.1039/d3dt02143b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
Bismuthinite (Bi2S3) nanostructures have garnered significant interest due to their appealing photoresponsivity which has positioned them as an attractive choice for energy conversion applications. However, to utilize their full potential, a simple and economically viable method of preparation is highly desirable. Herein, we present the synthesis and characterization including structural elucidation of a new air- and moisture-stable bismuth-pyrimidylthiolate complex. This complex serves as an efficient single-source molecular precursor for the facile preparation of phase-pure Bi2S3 nanostructures. Powder X-ray diffraction (PXRD), Raman spectroscopy, electron dispersive spectroscopy (EDS) and electron microscopy techniques were used to assess the crystal structure, phase purity, elemental composition and morphology of the as-prepared nanostructures. This study also revealed the profound effects of temperature and growth duration on the crystallinity, phase formation and morphology of nanostructures. The optical band gap of the nanostructures was tuned within the range of 1.9-2.3 eV, which is blue shifted with respect to the bulk bandgap and suitable for photovoltaic applications. Liquid junction photo-electrochemical cells fabricated from the as-prepared Bi2S3 nanostructure exhibit efficient photoresponsivity and good photo-stability, which project them as promising candidates for alternative low-cost photon absorber materials.
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Affiliation(s)
- Atharva Yeshwant Kulkarni
- Department of Chemistry, K. J. Somaiya College of Science and Commerce, Vidyavihar, Mumbai 400077, India.
| | - Gourab Karmakar
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai-400094, India
| | - Alpa Y Shah
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
| | - Sandeep Nigam
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai-400094, India
| | - Gayatri Kumbhare
- Department of Chemistry, K. J. Somaiya College of Science and Commerce, Vidyavihar, Mumbai 400077, India.
| | - Adish Tyagi
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai-400094, India
| | - Raymond J Butcher
- Department of Chemistry, Howard University, Washington, DC, 20059, USA
| | - Rohit Singh Chauhan
- Department of Chemistry, K. J. Somaiya College of Science and Commerce, Vidyavihar, Mumbai 400077, India.
| | - N Naveen Kumar
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai-400085, India
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6
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Sondors R, Niherysh K, Andzane J, Palermo X, Bauch T, Lombardi F, Erts D. Low-Vacuum Catalyst-Free Physical Vapor Deposition and Magnetotransport Properties of Ultrathin Bi 2Se 3 Nanoribbons. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2484. [PMID: 37686992 PMCID: PMC10489768 DOI: 10.3390/nano13172484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/26/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023]
Abstract
In this work, a simple catalyst-free physical vapor deposition method is optimized by adjusting source material pressure and evaporation time for the reliable obtaining of freestanding nanoribbons with thicknesses below 15 nm. The optimum synthesis temperature, time and pressure were determined for an increased yield of ultrathin Bi2Se3 nanoribbons with thicknesses of 8-15 nm. Physical and electrical characterization of the synthesized Bi2Se3 nanoribbons with thicknesses below 15 nm revealed no degradation of properties of the nanoribbons, as well as the absence of the contribution of trivial bulk charge carriers to the total conductance of the nanoribbons.
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Affiliation(s)
- Raitis Sondors
- Institute of Chemical Physics, University of Latvia, LV-1586 Riga, Latvia
| | - Kiryl Niherysh
- Institute of Chemical Physics, University of Latvia, LV-1586 Riga, Latvia
| | - Jana Andzane
- Institute of Chemical Physics, University of Latvia, LV-1586 Riga, Latvia
| | - Xavier Palermo
- Quantum Device Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 41296 Gothenburg, Sweden
| | - Thilo Bauch
- Quantum Device Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 41296 Gothenburg, Sweden
| | - Floriana Lombardi
- Quantum Device Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 41296 Gothenburg, Sweden
| | - Donats Erts
- Institute of Chemical Physics, University of Latvia, LV-1586 Riga, Latvia
- Faculty of Chemistry, University of Latvia, LV-1586 Riga, Latvia
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7
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Jin KH, Jiang W, Sethi G, Liu F. Topological quantum devices: a review. NANOSCALE 2023; 15:12787-12817. [PMID: 37490310 DOI: 10.1039/d3nr01288c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The introduction of the concept of topology into condensed matter physics has greatly deepened our fundamental understanding of transport properties of electrons as well as all other forms of quasi particles in solid materials. It has also fostered a paradigm shift from conventional electronic/optoelectronic devices to novel quantum devices based on topology-enabled quantum device functionalities that transfer energy and information with unprecedented precision, robustness, and efficiency. In this article, the recent research progress in topological quantum devices is reviewed. We first outline the topological spintronic devices underlined by the spin-momentum locking property of topology. We then highlight the topological electronic devices based on quantized electron and dissipationless spin conductivity protected by topology. Finally, we discuss quantum optoelectronic devices with topology-redefined photoexcitation and emission. The field of topological quantum devices is only in its infancy, we envision many significant advances in the near future.
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Affiliation(s)
- Kyung-Hwan Jin
- Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang 37673, Republic of Korea
| | - Wei Jiang
- School of Physics, Beijing Institute of Technology, Beijing 100081, China
| | - Gurjyot Sethi
- Department of Materials Science and Engineering, University of Utah, Salt Lake City, Utah 84112, USA.
| | - Feng Liu
- Department of Materials Science and Engineering, University of Utah, Salt Lake City, Utah 84112, USA.
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8
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Shekhar S, Oh Y, Jeong JY, Choi Y, Cho D, Hong S. Nanoscale mapping of edge-state conductivity and charge-trap activity in topological insulators. MATERIALS HORIZONS 2023; 10:2245-2253. [PMID: 37014136 DOI: 10.1039/d2mh01259f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report the nanoscale mapping of topological edge-state conductivity and the effects of charge-traps on conductivity in a Bi2Se3 multilayer film under ambient conditions. In this strategy, we applied an electric field perpendicular to the surface plane of Bi2Se3via a conducting probe to directly map the charge-trap densities and conductivities with a nanoscale resolution. The results showed that edge regions had one-dimensional characteristics with higher conductivities (two orders) and lower charge-trap densities (four orders) than those of flat surface regions where their conductivities and charge-traps were dominated by bulk effects. Additionally, edges showed an enhanced conductivity with an elevated electric field, possibly due to the creation of new topological states by stronger spin-Hall effects. Importantly, we observed ultra-high photoconductivity predominantly on edge regions compared with that of flat surface regions, which was attributed to the excitation of edge-state carriers by light. Since our method provides an important insight into the charge transport in topological insulators, it could be a significant advancement in the development of error-tolerant topotronic devices.
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Affiliation(s)
- Shashank Shekhar
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Korea.
| | - Yuhyeon Oh
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Korea.
| | - Jin-Young Jeong
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Korea.
| | - Yoonji Choi
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Korea.
| | - Duckhyung Cho
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Korea.
| | - Seunghun Hong
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Korea.
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9
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Pandharkar S, Hase Y, Shah S, Doiphode V, Waghmare A, Punde A, Shinde P, Rahane S, Bade B, Ladhane S, Prasad M, Patole SP, Jadkar S. Enhanced photoresponse of Cu 2ZnSnS 4 absorber thin films fabricated using multi-metallic stacked nanolayers. RSC Adv 2023; 13:12123-12132. [PMID: 37082369 PMCID: PMC10112394 DOI: 10.1039/d3ra00978e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 04/06/2023] [Indexed: 04/22/2023] Open
Abstract
Cu2ZnSnS4 (CZTS) thin films have attracted considerable attention as potential candidates for photovoltaic absorber materials. In a vacuum deposition technique, a sputtering stacked metallic layer followed by a thermal process for sulfur incorporation is used to obtain high-quality CZTS thin films. In this work, for fabricating CZTS thin films, we have done a 3LYS (3 layers), 6LYS, and 9LYS sequential deposition of Sn/ZnS/Cu metal stack (via. metallic stacked nanolayer precursors) onto Mo-coated corning glass substrate via. RF-sputtering. The prepared thin films were sulfurized in a tubular furnace at 550 °C in a gas mixture of 5% H2S + 95% Ar for 10 min. We further investigated the impact of the Sn/ZnS/Cu metal stacking layers on the quality of the thin film based on its response to light because metal inter-diffusion during sulfurization is unavoidable. The inter-diffusion of precursors is low in a 3-layer stack sample, limiting the fabricated film's performance. CZTS films with 6-layer and 9-layer stacks result in an improved photocurrent density of ∼38 μA cm-2 and ∼82 μA cm-2, respectively, compared to a 3-layer sample which has a photocurrent density of ∼19 μA cm-2. This enhancement can be attributed to the 9-layer approach's superior inter-diffusion of metallic precursors and compact, smooth CZTS microstructure evolution.
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Affiliation(s)
- Subhash Pandharkar
- Department of Physics, Savitribai Phule Pune University Pune 411007 India
- Department of Physics, Chandmal Tarachand Bora College Shirur Pune 412210 India
| | - Yogesh Hase
- Department of Physics, Savitribai Phule Pune University Pune 411007 India
| | - Shruti Shah
- Department of Physics, Savitribai Phule Pune University Pune 411007 India
| | - Vidya Doiphode
- Department of Physics, Savitribai Phule Pune University Pune 411007 India
| | - Ashish Waghmare
- Department of Physics, Savitribai Phule Pune University Pune 411007 India
| | - Ashvini Punde
- Department of Physics, Savitribai Phule Pune University Pune 411007 India
| | - Pratibha Shinde
- Department of Physics, Savitribai Phule Pune University Pune 411007 India
| | - Swati Rahane
- Department of Physics, Savitribai Phule Pune University Pune 411007 India
| | - Bharat Bade
- Department of Physics, Savitribai Phule Pune University Pune 411007 India
| | - Somnath Ladhane
- Department of Physics, Savitribai Phule Pune University Pune 411007 India
| | - Mohit Prasad
- Department of Physics, Savitribai Phule Pune University Pune 411007 India
- Department of Applied Science and Humanities, PCCOE Nigdi Pune 411004 India
| | - Shashikant P Patole
- Department of Physics, Khalifa University of Science and Technology Abu Dhabi 127788 UAE
| | - Sandesh Jadkar
- Department of Physics, Savitribai Phule Pune University Pune 411007 India
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10
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He K, Xu W, Tang J, Lu Y, Yi C, Li B, Zhu H, Zhang H, Lin X, Feng Y, Zhu M, Shen J, Zhong M, Li B, Duan X. Centimeter-Scale PdS 2 Ultrathin Films with High Mobility and Broadband Photoresponse. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206915. [PMID: 36725313 DOI: 10.1002/smll.202206915] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/18/2023] [Indexed: 06/18/2023]
Abstract
2D materials with mixed crystal phase will lead to the nonuniformity of performance and go against the practical application. Therefore, it is of great significance to develop a valid method to synthesize 2D materials with typical stoichiometry. Here, 2D palladium sulfides with centimeter scale and uniform stoichiometric ratio are synthesized via controlling the sulfurization temperature of palladium thin films. The relationship between sulfurization temperature and products is investigated in depth. Besides, the high-quality 2D PdS2 films are synthesized via sulfurization at the temperature of 450-550 °C, which would be compatible with back-end-of-line processes in semiconductor industry with considering of process temperature. The PdS2 films show an n-type semiconducting behavior with high mobility of 10.4 cm2 V-1 s-1 . The PdS2 photodetector presents a broadband photoresponse from 450 to 1550 nm. These findings provide a reliable way to synthesizing high-quality and large-area 2D materials with uniform crystal phase. The result suggests that 2D PdS2 has significant potential in future nanoelectronics and optoelectronic applications.
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Affiliation(s)
- Kun He
- Hunan Provincial Key Laboratory of Two-Dimensional Materials, Advanced Semiconductor Technology and Application Engineering Research Center of Ministry of Education of China, School of Physics and Electronics, Changsha Semiconductor Technology and Application Innovation Research Institute, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha, 410082, China
| | - Weiting Xu
- Hunan Provincial Key Laboratory of Two-Dimensional Materials, Advanced Semiconductor Technology and Application Engineering Research Center of Ministry of Education of China, School of Physics and Electronics, Changsha Semiconductor Technology and Application Innovation Research Institute, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha, 410082, China
| | - Jingmei Tang
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Yuan Lu
- School of Materials Science and Energy Engineering, Foshan University, Foshan, 528000, China
| | - Chen Yi
- Hunan Provincial Key Laboratory of Two-Dimensional Materials, Advanced Semiconductor Technology and Application Engineering Research Center of Ministry of Education of China, School of Physics and Electronics, Changsha Semiconductor Technology and Application Innovation Research Institute, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha, 410082, China
| | - Bailing Li
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Hongzhou Zhu
- Hunan Provincial Key Laboratory of Two-Dimensional Materials, Advanced Semiconductor Technology and Application Engineering Research Center of Ministry of Education of China, School of Physics and Electronics, Changsha Semiconductor Technology and Application Innovation Research Institute, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha, 410082, China
| | - Hongmei Zhang
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Xiaohui Lin
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Ya Feng
- Hunan Provincial Key Laboratory of Two-Dimensional Materials, Advanced Semiconductor Technology and Application Engineering Research Center of Ministry of Education of China, School of Physics and Electronics, Changsha Semiconductor Technology and Application Innovation Research Institute, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha, 410082, China
| | - Manli Zhu
- Hunan Provincial Key Laboratory of Two-Dimensional Materials, Advanced Semiconductor Technology and Application Engineering Research Center of Ministry of Education of China, School of Physics and Electronics, Changsha Semiconductor Technology and Application Innovation Research Institute, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha, 410082, China
| | - Jingru Shen
- Hunan Provincial Key Laboratory of Two-Dimensional Materials, Advanced Semiconductor Technology and Application Engineering Research Center of Ministry of Education of China, School of Physics and Electronics, Changsha Semiconductor Technology and Application Innovation Research Institute, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha, 410082, China
| | - Mianzeng Zhong
- School of Physics and Electronics, Central South University, Changsha, 410083, China
| | - Bo Li
- Hunan Provincial Key Laboratory of Two-Dimensional Materials, Advanced Semiconductor Technology and Application Engineering Research Center of Ministry of Education of China, School of Physics and Electronics, Changsha Semiconductor Technology and Application Innovation Research Institute, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha, 410082, China
- Research Institute of Hunan University in Chongqing, Chongqing, 401120, China
- Shenzhen Research Institute of Hunan University, Shenzhen, 518063, China
| | - Xidong Duan
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
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11
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Recent Progress on Graphene Flexible Photodetectors. MATERIALS 2022; 15:ma15144820. [PMID: 35888288 PMCID: PMC9318373 DOI: 10.3390/ma15144820] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/18/2022] [Accepted: 06/29/2022] [Indexed: 01/02/2023]
Abstract
In recent years, optoelectronics and related industries have developed rapidly. As typical optoelectronics devices, photodetectors (PDs) are widely applied in various fields. The functional materials in traditional PDs exhibit high hardness, and the performance of these rigid detectors is thus greatly reduced upon their stretching or bending. Therefore, the development of new flexible PDs with bendable and foldable functions is of great significance and has much interest in wearable, implantable optoelectronic devices. Graphene with excellent electrical and optical performance constructed on various flexible and rigid substrates has great potential in PDs. In this review, recent research progress on graphene-based flexible PDs is outlined. The research states of graphene conductive films are summarized, focusing on PDs based on single-component graphene and mixed-structure graphene, with a systematic analysis of their optical and mechanical performance, and the techniques for optimizing the PDs are also discussed. Finally, a summary of the current applications of graphene flexible PDs and perspectives is provided, and the remaining challenges are discussed.
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12
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Sett S, Parappurath A, Gill NK, Chauhan N, Ghosh A. Engineering sensitivity and spectral range of photodetection in van der Waals materials and hybrids. NANO EXPRESS 2022. [DOI: 10.1088/2632-959x/ac46b9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Abstract
Exploration of van der Waals heterostructures in the field of optoelectronics has produced photodetectors with very high bandwidth as well as ultra-high sensitivity. Appropriate engineering of these heterostructures allows us to exploit multiple light-to-electricity conversion mechanisms, ranging from photovoltaic, photoconductive to photogating processes. These mechanisms manifest in different sensitivity and speed of photoresponse. In addition, integrating graphene-based hybrid structures with photonic platforms provides a high gain-bandwidth product, with bandwidths ≫1 GHz. In this review, we discuss the progression in the field of photodetection in 2D hybrids. We emphasize the physical mechanisms at play in diverse architectures and discuss the origin of enhanced photoresponse in hybrids. Recent developments in 2D photodetectors based on room temperature detection, photon-counting ability, integration with Si and other pressing issues, that need to be addressed for these materials to be integrated with industrial standards have been discussed.
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13
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Wang CC, Lin PT, Shieu FS, Shih HC. Enhanced Photocurrent of the Ag Interfaced Topological Insulator Bi 2Se 3 under UV- and Visible-Light Radiations. NANOMATERIALS 2021; 11:nano11123353. [PMID: 34947704 PMCID: PMC8705254 DOI: 10.3390/nano11123353] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/05/2021] [Accepted: 12/08/2021] [Indexed: 11/16/2022]
Abstract
Bi2Se3 is a topological quantum material that is used in photodetectors, owing to its narrow bandgap, conductive surface, and insulating bulk. In this work, Ag@Bi2Se3 nanoplatelets were synthesized on Al2O3(100) substrates in a two-step process of thermal evaporation and magnetron sputtering. X-ray diffractometer (XRD), high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy, and x-ray photoelectron spectroscopy (XPS) revealed that all samples had the typical rhombohedral Bi2Se3. Field-emission scanning electron microscopy (FESEM)-energy dispersive x-ray spectroscopy (EDS), XPS, and HRTEM confirmed the presence of the precipitated Ag. The optical absorptance of Bi2Se3 nanoplatelets in UV-visible range decreased with the Ag contents. Results of photocurrent measurements under zero-bias conditions revealed that the deposited Ag affected photosensitivity. A total of 7.1 at.% Ag was associated with approximately 4.25 and 4.57 times higher photocurrents under UV and visible light, respectively, than 0 at.% Ag. The photocurrent in Bi2Se3 at 7.1 at.% Ag under visible light was 1.72-folds of that under UV light. This enhanced photocurrent is attributable to the narrow bandgap (~0.35 eV) of Bi2Se3 nanoplatelets, the Schottky field at the interface between Ag and Bi2Se3, the surface plasmon resonance that is caused by Ag, and the highly conductive surface that is formed from Ag and Bi2Se3. This work suggests that the appropriate Ag deposition enhances the photocurrent in, and increases the photosensitivity of, Bi2Se3 nanoplatelets under UV and visible light.
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Affiliation(s)
- Chih-Chiang Wang
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan;
- International Agriculture Center, National Chung Hsing University, Taichung 40227, Taiwan
| | - Pao-Tai Lin
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX 77843, USA;
| | - Fuh-Sheng Shieu
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan;
- Correspondence: (F.-S.S.); (H.-C.S.)
| | - Han-Chang Shih
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan;
- Department of Chemical Engineering and Materials Science, Chinese Culture University, Taipei 11114, Taiwan
- Correspondence: (F.-S.S.); (H.-C.S.)
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14
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Abstract
2D layered materials with diverse exciting properties have recently attracted tremendous interest in the scientific community. Layered topological insulator Bi2Se3 comes into the spotlight as an exotic state of quantum matter with insulating bulk states and metallic Dirac-like surface states. Its unique crystal and electronic structure offer attractive features such as broadband optical absorption, thickness-dependent surface bandgap and polarization-sensitive photoresponse, which enable 2D Bi2Se3 to be a promising candidate for optoelectronic applications. Herein, we present a comprehensive summary on the recent advances of 2D Bi2Se3 materials. The structure and inherent properties of Bi2Se3 are firstly described and its preparation approaches (i.e., solution synthesis and van der Waals epitaxy growth) are then introduced. Moreover, the optoelectronic applications of 2D Bi2Se3 materials in visible-infrared detection, terahertz detection, and opto-spintronic device are discussed in detail. Finally, the challenges and prospects in this field are expounded on the basis of current development.
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Affiliation(s)
- Fakun K. Wang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Sijie J. Yang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Tianyou Y. Zhai
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
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15
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Jang J, Geum DM, Kim S. Broadband Au/n-GaSb Schottky photodetector array with a spectral range from 300 nm to 1700nm. OPTICS EXPRESS 2021; 29:38894-38903. [PMID: 34808932 DOI: 10.1364/oe.443094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 10/28/2021] [Indexed: 06/13/2023]
Abstract
A broadband photodetector is becoming increasingly important as a key element for multicolor imaging. We proposed an Au/n-GaSb Schottky photodetector (PD) array with a wide spectral range from ultraviolet (UV) to short-wavelength infrared (SWIR). The PD was formed by deposition of a 5 nm-thick Au layer on the n-type GaSb substrate and subsequent mesa array formation. The fabricated PD array has shown uniform electrical characteristics and good rectifying behaviors. From the photoresponse measurement, the PD has shown uniformly high external quantum efficiency (EQE) over a spectral range of 300 nm to 1700nm. The value of EQE was 35% at 300 nm and exceeded 50% in the IR region. Furthermore, the PD has shown a rapid rise time of 1.44 µs from the transient photoresponse measurement.
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16
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Wang CC, Shieu FS, Shih HC. Photosensing and Characterizing of the Pristine and In-, Sn-Doped Bi 2Se 3 Nanoplatelets Fabricated by Thermal V-S Process. NANOMATERIALS 2021; 11:nano11051352. [PMID: 34065472 PMCID: PMC8161412 DOI: 10.3390/nano11051352] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/17/2021] [Accepted: 05/18/2021] [Indexed: 12/02/2022]
Abstract
Pristine, and In-, Sn-, and (In, Sn)-doped Bi2Se3 nanoplatelets synthesized on Al2O3(100) substrate by a vapor–solid mechanism in thermal CVD process via at 600 °C under 2 × 10−2 Torr. XRD and HRTEM reveal that In or Sn dopants had no effect on the crystal structure of the synthesized rhombohedral-Bi2Se3. FPA–FTIR reveals that the optical bandgap of doped Bi2Se3 was 26.3%, 34.1%, and 43.7% lower than pristine Bi2Se3. XRD, FESEM–EDS, Raman spectroscopy, and XPS confirm defects (In3+Bi3+), (In3+V0), (Sn4+Bi3+), (V0Bi3+), and (Sn2+Bi3+). Photocurrent that was generated in (In,Sn)-doped Bi2Se3 under UV(8 W) and red (5 W) light revealed stable photocurrents of 5.20 × 10−10 and 0.35 × 10−10 A and high Iphoto/Idark ratios of 30.7 and 52.2. The rise and fall times of the photocurrent under UV light were 4.1 × 10−2 and 6.6 × 10−2 s. Under UV light, (In,Sn)-dopedBi2Se3 had 15.3% longer photocurrent decay time and 22.6% shorter rise time than pristine Bi2Se3, indicating that (In,Sn)-doped Bi2Se3 exhibited good surface conduction and greater photosensitivity. These results suggest that In, Sn, or both dopants enhance photodetection of pristine Bi2Se3 under UV and red light. The findings also suggest that type of defect is a more important factor than optical bandgap in determining photo-detection sensitivity. (In,Sn)-doped Bi2Se3 has greater potential than undoped Bi2Se3 for use in UV and red-light photodetectors.
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Affiliation(s)
- Chih-Chiang Wang
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan;
| | - Fuh-Sheng Shieu
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan;
- Correspondence: (F.-S.S.); (H.C.S.)
| | - Han C. Shih
- Department of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan;
- Department of Chemical Engineering and Materials Science, Chinese Culture University, Taipei 11114, Taiwan
- Correspondence: (F.-S.S.); (H.C.S.)
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17
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Yadav R, Bhattacharyya B, Pandey A, Kaur M, Aloysius RP, Gupta A, Husale S. Accessing topological surface states and negative MR in sculpted nanowires of Bi 2Te 3 at ultra-low temperature. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:085301. [PMID: 33171442 DOI: 10.1088/1361-648x/abc944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Milling of 2D flakes is a simple method to fabricate nanomaterial of any desired shape and size. Inherently milling process can introduce the impurity or disorder which might show exotic quantum transport phenomenon when studied at the low temperature. Here we report temperature dependent weak antilocalization (WAL) effects in the sculpted nanowires of topological insulator in the presence of perpendicular magnetic field. The quadratic and linear magnetoconductivity (MC) curves at low temperature (>2 K) indicate the bulk contribution in the transport. A cusp feature in magnetoconductivity curves (positive magnetoresistance) at ultra low (<1 K) temperature and at magnetic field (<1 T) represent the WAL indicating the transport through surface states. The MC curves are discussed by using the 2D Hikami-Larkin-Nagaoka theory. The cross-over/interplay nature of positive and negative magnetoresistance observed in the MR curve at ultra-low temperature. Our results indicate that transport through topological surface states (TSS) in sculpted nanowires of Bi2Te3 can be achieved at mK range and linear MR observed at ∼2 K could be the coexistence of electron transport through TSS and contribution from the bulk band.
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Affiliation(s)
- Reena Yadav
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
- National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K S Krishnan Road, New Delhi-110012, India
| | - Biplab Bhattacharyya
- National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K S Krishnan Road, New Delhi-110012, India
| | - Animesh Pandey
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
- National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K S Krishnan Road, New Delhi-110012, India
| | - Mandeep Kaur
- National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K S Krishnan Road, New Delhi-110012, India
| | - R P Aloysius
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
- National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K S Krishnan Road, New Delhi-110012, India
| | - Anurag Gupta
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
- National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K S Krishnan Road, New Delhi-110012, India
| | - Sudhir Husale
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
- National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K S Krishnan Road, New Delhi-110012, India
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18
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Pandey A, Yadav R, Kaur M, Singh P, Gupta A, Husale S. High performing flexible optoelectronic devices using thin films of topological insulator. Sci Rep 2021; 11:832. [PMID: 33436932 PMCID: PMC7804467 DOI: 10.1038/s41598-020-80738-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 12/21/2020] [Indexed: 01/29/2023] Open
Abstract
Topological insulators (TIs) possess exciting nonlinear optical properties due to presence of metallic surface states with the Dirac fermions and are predicted as a promising material for broadspectral phodotection ranging from UV (ultraviolet) to deep IR (infrared) or terahertz range. The recent experimental reports demonstrating nonlinear optical properties are mostly carried out on non-flexible substrates and there is a huge demand for the fabrication of high performing flexible optoelectronic devices using new exotic materials due to their potential applications in wearable devices, communications, sensors, imaging etc. Here first time we integrate the thin films of TIs (Bi2Te3) with the flexible PET (polyethylene terephthalate) substrate and report the strong light absorption properties in these devices. Owing to small band gap material, evolving bulk and gapless surface state conduction, we observe high responsivity and detectivity at NIR (near infrared) wavelengths (39 A/W, 6.1 × 108 Jones for 1064 nm and 58 A/W, 6.1 × 108 Jones for 1550 nm). TIs based flexible devices show that photocurrent is linearly dependent on the incident laser power and applied bias voltage. Devices also show very fast response and decay times. Thus we believe that the superior optoelectronic properties reported here pave the way for making TIs based flexible optoelectronic devices.
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Affiliation(s)
- Animesh Pandey
- grid.419701.a0000 0004 1796 3268Academy of Scientific and Innovative Research (AcSIR), Council of Scientific and Industrial Research, National Physical Laboratory, Dr. K. S Krishnan Road, New Delhi, 110012 India ,grid.419701.a0000 0004 1796 3268Council of Scientific and Industrial Research, National Physical Laboratory, Dr. K. S Krishnan Road, New Delhi, 110012 India
| | - Reena Yadav
- grid.419701.a0000 0004 1796 3268Academy of Scientific and Innovative Research (AcSIR), Council of Scientific and Industrial Research, National Physical Laboratory, Dr. K. S Krishnan Road, New Delhi, 110012 India ,grid.419701.a0000 0004 1796 3268Council of Scientific and Industrial Research, National Physical Laboratory, Dr. K. S Krishnan Road, New Delhi, 110012 India
| | - Mandeep Kaur
- grid.419701.a0000 0004 1796 3268Council of Scientific and Industrial Research, National Physical Laboratory, Dr. K. S Krishnan Road, New Delhi, 110012 India
| | - Preetam Singh
- grid.419701.a0000 0004 1796 3268Academy of Scientific and Innovative Research (AcSIR), Council of Scientific and Industrial Research, National Physical Laboratory, Dr. K. S Krishnan Road, New Delhi, 110012 India ,grid.419701.a0000 0004 1796 3268Council of Scientific and Industrial Research, National Physical Laboratory, Dr. K. S Krishnan Road, New Delhi, 110012 India
| | - Anurag Gupta
- grid.419701.a0000 0004 1796 3268Academy of Scientific and Innovative Research (AcSIR), Council of Scientific and Industrial Research, National Physical Laboratory, Dr. K. S Krishnan Road, New Delhi, 110012 India ,grid.419701.a0000 0004 1796 3268Council of Scientific and Industrial Research, National Physical Laboratory, Dr. K. S Krishnan Road, New Delhi, 110012 India
| | - Sudhir Husale
- grid.419701.a0000 0004 1796 3268Academy of Scientific and Innovative Research (AcSIR), Council of Scientific and Industrial Research, National Physical Laboratory, Dr. K. S Krishnan Road, New Delhi, 110012 India ,grid.419701.a0000 0004 1796 3268Council of Scientific and Industrial Research, National Physical Laboratory, Dr. K. S Krishnan Road, New Delhi, 110012 India
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19
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2D Bi 2Se 3 van der Waals Epitaxy on Mica for Optoelectronics Applications. NANOMATERIALS 2020; 10:nano10091653. [PMID: 32842700 PMCID: PMC7558585 DOI: 10.3390/nano10091653] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/06/2020] [Accepted: 08/14/2020] [Indexed: 11/27/2022]
Abstract
Bi2Se3 possesses a two-dimensional layered rhombohedral crystal structure, where the quintuple layers (QLs) are covalently bonded within the layers but weakly held together by van der Waals forces between the adjacent QLs. It is also pointed out that Bi2Se3 is a topological insulator, making it a promising candidate for a wide range of electronic and optoelectronic applications. In this study, we investigate the growth of high-quality Bi2Se3 thin films on mica by the molecular beam epitaxy technique. The films exhibited a layered structure and highly c-axis-preferred growth orientation with an XRD rocking curve full-width at half-maximum (FWHM) of 0.088°, clearly demonstrating excellent crystallinity for the Bi2Se3 deposited on the mica substrate. The growth mechanism was studied by using an interface model associated with the coincidence site lattice unit (CSLU) developed for van der Waals epitaxies. This high (001) texture favors electron transport in the material. Hall measurements revealed a mobility of 726 cm2/(Vs) at room temperature and up to 1469 cm2/(Vs) at 12 K. The results illustrate excellent electron mobility arising from the superior crystallinity of the films with significant implications for applications in conducting electrodes in optoelectronic devices on flexible substrates.
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20
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Singh R, Kumari P, Kumar M, Ichikawa T, Jain A. Implementation of Bismuth Chalcogenides as an Efficient Anode: A Journey from Conventional Liquid Electrolyte to an All-Solid-State Li-Ion Battery. Molecules 2020; 25:E3733. [PMID: 32824210 PMCID: PMC7465757 DOI: 10.3390/molecules25163733] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/10/2020] [Accepted: 08/14/2020] [Indexed: 12/27/2022] Open
Abstract
Bismuth chalcogenide (Bi2X3; X = sulfur (S), selenium (Se), and tellurium (Te)) materials are considered as promising materials for diverse applications due to their unique properties. Their narrow bandgap, good thermal conductivity, and environmental friendliness make them suitable candidates for thermoelectric applications, photodetector, sensors along with a wide array of energy storage applications. More specifically, their unique layered structure allows them to intercalate Li+ ions and further provide conducting channels for transport. This property makes these suitable anodes for Li-ion batteries. However, low conductivity and high-volume expansion cause the poor electrochemical cyclability, thus creating a bottleneck to the implementation of these for practical use. Tremendous endeavors have been devoted towards the enhancement of cyclability of these materials, including nanostructuring and the incorporation of a carbon framework matrix to immobilize the nanostructures to prevent agglomeration. Apart from all these techniques to improve the anode properties of Bi2X3 materials, a step towards all-solid-state lithium-ion batteries using Bi2X3-based anodes has also been proven as a key approach for next-generation batteries. This review article highlights the main issues and recent advances associated with Bi2X3 anodes using both solid and liquid electrolytes.
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Affiliation(s)
- Rini Singh
- Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan; (R.S.); (T.I.)
| | - Pooja Kumari
- Department of Physics, Malaviya National Institute of Technology Jaipur, Rajasthan 302017, India; (P.K.); (M.K.)
| | - Manoj Kumar
- Department of Physics, Malaviya National Institute of Technology Jaipur, Rajasthan 302017, India; (P.K.); (M.K.)
| | - Takayuki Ichikawa
- Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan; (R.S.); (T.I.)
- Natural Science Centre for Basic Research and Development, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
| | - Ankur Jain
- Natural Science Centre for Basic Research and Development, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
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21
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Salvato M, Scagliotti M, De Crescenzi M, Castrucci P, De Matteis F, Crivellari M, Pelli Cresi S, Catone D, Bauch T, Lombardi F. Stoichiometric Bi 2Se 3 topological insulator ultra-thin films obtained through a new fabrication process for optoelectronic applications. NANOSCALE 2020; 12:12405-12415. [PMID: 32490504 DOI: 10.1039/d0nr02725a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A new fabrication process is developed for growing Bi2Se3 topological insulators in the form of nanowires/nanobelts and ultra-thin films. It consists of two consecutive procedures: first Bi2Se3 nanowires/nanobelts are deposited by standard catalyst free vapour-solid deposition on different substrates positioned inside a quartz tube. Then, the Bi2Se3, stuck on the inner surface of the quartz tube, is re-evaporated and deposited in the form of ultra-thin films on new substrates at a temperature below 100 °C, which is of relevance for flexible electronic applications. The method is new, quick, very inexpensive, easy to control and allows obtaining films with different thickness down to one quintuple layer (QL) during the same procedure. The composition and the crystal structure of both the nanowires/nanobelts and the thin films are analysed by different optical, electronic and structural techniques. For the films, scanning tunnelling spectroscopy shows that the Fermi level is positioned in the middle of the energy bandgap as a consequence of the achieved correct stoichiometry. Ultra-thin films, with thickness in the range 1-10 QLs deposited on n-doped Si substrates, show good rectifying properties suitable for their use as photodetectors in the ultra violet-visible-near infrared wavelength range.
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Affiliation(s)
- Matteo Salvato
- Dipartimento di Fisica, Università di Roma "Tor Vergata", 00133 Roma, Italy.
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Rao KDM, Hossain M, Roy A, Ghosh A, Kumar GS, Moitra P, Kamilya T, Acharya S, Bhattacharya S. Transparent, flexible MAPbI 3 perovskite microwire arrays passivated with ultra-hydrophobic supramolecular self-assembly for stable and high-performance photodetectors. NANOSCALE 2020; 12:11986-11996. [PMID: 32459260 DOI: 10.1039/d0nr01394c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The emergence of organic-inorganic hybrid perovskites (OHPs) has revolutionised the potential performance of optoelectronic devices; most perovskites are opaque and hence incompatible with transparent optoelectronics and sensitive to environmental degradation. Here, we have reported a single-step fabrication of ultra-long MAPbI3 perovskite microwire arrays over a large area using stencil lithography based on sequential vacuum sublimation. The environmental stability of MAPbI3 is empowered with a newly designed and synthesized transparent supramolecular self-assembly based on a mixture of two tripodal l-Phe-C11H23/C7F15 molecules, which showed a contact angle of 105° and served as ultra-hydrophobic passivation layers for more than 45 days in an ambient atmosphere. The MAPbI3 microwire arrays passivated with the supramolecular self-assembly demonstrated for the first time both excellent transparency of ∼89% at 550 nm and a remarkable photoresponse with a photo-switching ratio of ∼104, responsivity of 789 A W-1, detectivity of 1014 Jones, linear dynamic range of ∼122 dB, and rise time of 432 μs. Furthermore, the photodetector fabricated on a flexible PET substrate demonstrated robust mechanical flexibility even beyond 1200 bending cycles. Therefore, the scalable stencil lithography and supramolecular passivation approaches have the potential to deliver next-generation transparent, flexible, and stable optoelectronic devices.
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Affiliation(s)
- K D M Rao
- School of Applied & Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India.
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Liu CW, Wang Z, Qiu RLJ, Gao XPA. Development of topological insulator and topological crystalline insulator nanostructures. NANOTECHNOLOGY 2020; 31:192001. [PMID: 31962300 DOI: 10.1088/1361-6528/ab6dfc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Topological insulators (TIs), a class of quantum materials with time reversal symmetry protected gapless Dirac-surface states, have attracted intensive research interests due to their exotic electronic properties. Topological crystalline insulators (TCIs), whose gapless surface states are protected by the crystal symmetry, have recently been proposed and experimentally verified as a new class of TIs. With high surface-to-volume ratio, nanoscale TI and TCI materials such as nanowires and nanoribbons can have significantly enhanced contribution from surface states in carrier transport and are thus ideally suited for the fundamental studies of topologically protected surface state transport and nanodevice fabrication. This article will review the synthesis and transport device measurements of TIs and TCIs nanostructures.
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Affiliation(s)
- Chieh-Wen Liu
- Department of Physics, Case Western Reserve University, 2076 Adelbert Road, Cleveland, OH 44106, United States of America
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24
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Kumar GS, Sarkar PK, Pradhan B, Hossain M, Rao KDM, Acharya S. Large-area transparent flexible guanidinium incorporated MAPbI 3 microstructures for high-performance photodetectors with enhanced stability. NANOSCALE HORIZONS 2020; 5:696-704. [PMID: 32226965 DOI: 10.1039/c9nh00774a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Unveiling the transparency and flexibility in perovskite-based photodetectors with superior photoresponse and environmental stability remains an open challenge. Here we report on guanidinium incorporated metal halide perovskite (MA1-xGuaxPbI3, x = 0 to 0.65) random percolative microstructure (RPM) fabrication using an ultra-fast spray coating technique. Remarkably, RPMs over a large area of 5 × 5 cm2 on flexible substrates with a transparency of ∼50% can be achieved with enriched environmental stability. Transparent photodetectors based on MA1-xGuaxPbI3 (x = 0.12) RPMs manifest excellent performance with a responsivity of 187 A W-1, a detectivity of 2.23 × 1012 Jones and an external quantum efficiency of 44 115%. Additionally, the photodetectors exhibited superior mechanical flexibility under a wide range of bending angles and large number of binding cycles. Integrating features including transparency, high performance, stability, flexibility and scalability within a photodetector is unmatched and holds potential for novel applications in transparent and wearable optoelectronic devices.
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Affiliation(s)
- Gundam Sandeep Kumar
- School of Applied & Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India.
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25
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Wang B, Huang Z, Tang P, Luo S, Liu Y, Li J, Qi X. One-pot synthesized Bi 2Te 3/graphene for a self-powered photoelectrochemical-type photodetector. NANOTECHNOLOGY 2020; 31:115201. [PMID: 31747652 DOI: 10.1088/1361-6528/ab5970] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Bismuth telluride (Bi2Te3) is a typical topological insulator, which possesses a narrow band gap and exhibits fascinating performance in the photodetector field. In this work, we fabricated a Bi2Te3/graphene heterostructure via a facile one-pot hydrothermal method. The as-prepared composites were used as the electrode materials for the photoelectrochemical (PEC)-type photodetector. From the results of PEC tests, we obviously found that the Bi2Te3/graphene heterostructure offers a remarkable improvement in photoresponse compared to that of sole Bi2Te3, and effectively demonstrates effective photocarrier generation and transfer at the interface between the graphene and Bi2Te3, which can enhance the properties of the photoresponse. Moreover, owing to the self-powered ability of the PEC-type photodetector, it can work under the bias potential of 0 V and exhibits a prominent photoresponse which can reach 2.2 mA W-1. Also, the photocurrent density of the prepared Bi2Te3/graphene heterostructure-based photodetector can almost linearly rise with the increased irradiation power density. Even if the light intensity was reduced to 40 mW cm-2, the photocurrent density could also reach 67 μA cm-2, which ensures the photodetection ability of the as-prepared Bi2Te3/graphene under low light intensity. The excellent performance of a Bi2Te3/graphene heterostructure for a PEC-type photodetector holds great promise in the field of photoelectric detection.
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Affiliation(s)
- Bo Wang
- School of Physics and Optoelectronic, Xiangtan University, Hunan 411105, People's Republic of China
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26
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Liu S, Huang Z, Qiao H, Hu R, Ma Q, Huang K, Li H, Qi X. Two-dimensional Bi 2Se 3 nanosheet based flexible infrared photodetector with pencil-drawn graphite electrodes on paper. NANOSCALE ADVANCES 2020; 2:906-912. [PMID: 36133254 PMCID: PMC9418427 DOI: 10.1039/c9na00745h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 12/29/2019] [Indexed: 05/27/2023]
Abstract
Flexible optoelectronic devices have been of great significance in recent years, owing to their extensive commercial and military applications. However, the manufacturing processes of most existing flexible photodetectors are particularly complicated and expensive. Employing a facile and low cost way for constructing a high performance flexible infrared photodetector is one of the effective strategies to facilitate its practical applications. Pencil-drawing is a popular method in novel electronic and optoelectronic devices, as it is a low cost and facile fabrication process. Herein, we report a novel flexible infrared photodetector using liquid-exfoliated Bi2Se3 nanosheets as a light sensitive material, pencil-drawn graphite as the electrodes, and paper as the substrate. The as-fabricated photodetector exhibits high photocurrent, excellent responsivity and long-term stability under 1064 nm infrared light irradiation. In addition, as the pencil-drawn photodetector is made of a flexible paper substrate, it also well exhibits stability and durability under bending conditions. This work is proposed to be a route to construct a novel flexible infrared photodetector with a facile manufacturing process and low cost.
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Affiliation(s)
- Shengqian Liu
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices, Laboratory for Quantum Engineering and Micro-Nano Energy Technology, School of Physics and Optoelectronic, Xiangtan University Hunan 411105 P. R. China
| | - Zongyu Huang
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices, Laboratory for Quantum Engineering and Micro-Nano Energy Technology, School of Physics and Optoelectronic, Xiangtan University Hunan 411105 P. R. China
| | - Hui Qiao
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices, Laboratory for Quantum Engineering and Micro-Nano Energy Technology, School of Physics and Optoelectronic, Xiangtan University Hunan 411105 P. R. China
| | - Rong Hu
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices, Laboratory for Quantum Engineering and Micro-Nano Energy Technology, School of Physics and Optoelectronic, Xiangtan University Hunan 411105 P. R. China
| | - Qian Ma
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices, Laboratory for Quantum Engineering and Micro-Nano Energy Technology, School of Physics and Optoelectronic, Xiangtan University Hunan 411105 P. R. China
| | - Kai Huang
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices, Laboratory for Quantum Engineering and Micro-Nano Energy Technology, School of Physics and Optoelectronic, Xiangtan University Hunan 411105 P. R. China
| | - Hongxing Li
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices, Laboratory for Quantum Engineering and Micro-Nano Energy Technology, School of Physics and Optoelectronic, Xiangtan University Hunan 411105 P. R. China
| | - Xiang Qi
- Hunan Key Laboratory of Micro-Nano Energy Materials and Devices, Laboratory for Quantum Engineering and Micro-Nano Energy Technology, School of Physics and Optoelectronic, Xiangtan University Hunan 411105 P. R. China
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Mandal G, Mawale RM, Gutwirth J, Němec P, Havel J. Laser Ablation Generation of Bismuth Selenide Clusters from Mixtures of Elements, Crystalline Bi 2Se 3, or Thin Films: Laser Desorption Ionization (LDI) and Surface Assisted LDI Time-of-Flight Mass Spectrometry using Graphene and Nanodiamonds. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:66-72. [PMID: 32881513 DOI: 10.1021/jasms.9b00060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A bismuth-selenium system from mixtures of the powdered elements in various molar ratios and from Bi2Se3 crystals and/or thin films was studied using laser desorption ionization and surface assisted laser desorption ionization. The BimSen clusters were observed in both positive and negative ion modes, but the mass spectra were more intense, and also a higher number of clusters was formed in the positive ion mode than in the negative mode. The BiSen+ (n = 1-8), Bi2Sen+ (n = 1-5), and Bi3Sen+ (n = 1-6) clusters were detected. Similarly, in the negative ion mode, BiSen- (n = 2-9) and Bi2Sen- (n = 1-2) clusters were observed. In addition, the formation of Bim+ (m = 1-5), Sen+ (n = 1-8), and Sen- (n = 1-7) clusters was also observed. In total, 33 clusters were generated, and 4 new bismuth selenide clusters that have not been reported before (namely, BiSe7+/-, BiSe8+/-, BiSe9-, and Bi2Se5+) were detected. The formation of similar clusters was also observed from bismuth-selenium mixtures and from crystalline Bi2Se3. Furthermore, the Bi2Se3 thin films prepared from a magnetron sputtering technique were also examined via laser desorption ionization. The generation of clusters from the surface of graphene and nanodiamonds was also studied, but no remarkable difference with comparison to the metal surface was observed.
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Affiliation(s)
- Govinda Mandal
- Department of Chemistry, Faculty of Science, Masaryk University, A14/326-Kamenice 753/5, 625 00 Brno, Czech Republic
| | - Ravi Madhukar Mawale
- Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic
| | - Jan Gutwirth
- Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic
| | - Petr Němec
- Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic
| | - Josef Havel
- Department of Chemistry, Faculty of Science, Masaryk University, A14/326-Kamenice 753/5, 625 00 Brno, Czech Republic
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28
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Gupta A, Chowdhury RK, Ray SK, Srivastava SK. Selective photoresponse of plasmonic silver nanoparticle decorated Bi 2Se 3 nanosheets. NANOTECHNOLOGY 2019; 30:435204. [PMID: 31320602 DOI: 10.1088/1361-6528/ab3382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The plasmon-enhanced photoresponse properties of a Ag nanoparticle decorated Bi2Se3 nanosheet (AGBS)/p-Si heterojunction device have been studied. The Ag nanoparticles, Bi2Se3 nanosheets, and AGBS nanocomposite are synthesized chemically. Microscopic investigations, ultimately of the AGBS nanocomposite, reveal that the Bi2Se3 nanosheets of thickness ∼20 nm and lateral dimension ∼1 μm are decorated with Ag nanoparticles of sizes 20-40 nm in the nanocomposite. The x-ray diffraction pattern of AGBS shows that apart from being in a metallic state, the Ag in the AGBS is also in the form of compounds with Bi, Se, and additionally O. This observation is further complemented by the x-ray photoelectron spectrum, which shows the presence of Ag0 and Ag+ states of Ag in AGBS. The UV-visible absorption spectra show the plasmonic peak of the Ag nanoparticles occurs at 420 nm; the peak is shifted to ∼500 nm in AGBS due to the modified dielectric environment of the nanoparticles. The AGBS/p-Si heterojunction shows excellent photoresponse properties, with a responsivity of 0.28 A/W, a fairly high detectivity of 4 × 1010 Jones, and an EQE of 71% under 10 V reverse bias at a 500 nm wavelength. The plasmon enhanced photoresponse at the selective wavelength makes this material attractive for high performance optoelectronic devices.
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Affiliation(s)
- Anu Gupta
- Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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29
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Hasan MT, Gonzalez-Rodriguez R, Ryan C, Coffer JL, Naumov AV. Variation of Optical Properties of Nitrogen-doped Graphene Quantum Dots with Short/Mid/Long-wave Ultraviolet for the Development of the UV Photodetector. ACS APPLIED MATERIALS & INTERFACES 2019; 11:39035-39045. [PMID: 31553149 DOI: 10.1021/acsami.9b10365] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nitrogen-doped graphene quantum dots (NGQDs) synthesized from a single glucosamine precursor are utilized to develop a novel UV photodetector. Optical properties of NGQDs can be altered with short- (254 nm), mid- (302 nm), and long-wave (365 nm) ultraviolet (UV) exposure leading to the reduction of absorption from deep to mid UV (200-320 nm) and enhancement above 320 nm. Significant quenching of blue and near-IR fluorescence accompanied by the dramatic increase of green/yellow emission of UV-treated NGQDs can be used as a potential UV-sensing mechanism. These emission changes are attributed to the reduction of functional groups detected by Fourier transformed infrared spectroscopy and free-radical-driven polymerization of the NGQDs increasing their average size from 4.70 to 11.20 nm at 60 min treatment. Due to strong UV absorption and sensitivity to UV irradiation, NGQDs developed in this work are utilized to fabricate UV photodetectors. Tested under long-/mid-/short-wave UV, these devices show high photoresponsivity (up to 0.59 A/W) and excellent photodetectivity (up to 1.03 × 1011 Jones) with highly characteristic wavelength-dependent reproducible response. This study suggests that the optical/structural properties of NGQDs can be controllably altered via different wavelength UV treatment leading us to fabricate NGQD-based novel UV photodetectors providing high responsivity and detectivity.
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Affiliation(s)
- Md Tanvir Hasan
- Department of Physics and Astronomy , Texas Christian University , TCU Box 298840, Fort Worth , Texas 76129 , United States
| | - Roberto Gonzalez-Rodriguez
- Department of Chemistry and Biochemistry , Texas Christian University , TCU Box 298860, Fort Worth , Texas 76129 , United States
| | - Conor Ryan
- Department of Physics and Astronomy , Texas Christian University , TCU Box 298840, Fort Worth , Texas 76129 , United States
| | - Jeffery L Coffer
- Department of Chemistry and Biochemistry , Texas Christian University , TCU Box 298860, Fort Worth , Texas 76129 , United States
| | - Anton V Naumov
- Department of Physics and Astronomy , Texas Christian University , TCU Box 298840, Fort Worth , Texas 76129 , United States
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Chen X, Wang D, Wang T, Yang Z, Zou X, Wang P, Luo W, Li Q, Liao L, Hu W, Wei Z. Enhanced Photoresponsivity of a GaAs Nanowire Metal-Semiconductor-Metal Photodetector by Adjusting the Fermi Level. ACS APPLIED MATERIALS & INTERFACES 2019; 11:33188-33193. [PMID: 31415147 DOI: 10.1021/acsami.9b07891] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Metal-semiconductor-metal (MSM)-structured GaAs-based nanowire photodetectors have been widely reported because they are promising as an alternative for high-performance devices. Owing to the Schottky built-in electric fields in the MSM structure photodetectors, enhancements in photoresponsivity can be realized. Thus, strengthening the built-in electric field is an efficacious way to make the detection capability better. In this study, we fabricate a single GaAs nanowire MSM photodetector with superior performance by doping-adjusting the Fermi level to strengthen the built-in electric field. An outstanding responsivity of 1175 A/W is obtained. This is two orders of magnitude better than the responsivity of the undoped sample. Scanning photocurrent mappings and simulations are performed to confirm that the enhancement in responsivity is because of the increase in the hole Schottky built-in electric field, which can separate and collect the photogenerated carriers more effectively. The eloquent evidence clearly proves that doping-adjusting the Fermi level has great potential applications in high-performance GaAs nanowire photodetectors and other functional photodetectors.
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Affiliation(s)
- Xue Chen
- State Key Laboratory of High Power Semiconductor Lasers , Changchun University of Science and Technology , Changchun 130022 , China
| | - Dengkui Wang
- State Key Laboratory of High Power Semiconductor Lasers , Changchun University of Science and Technology , Changchun 130022 , China
| | - Tuo Wang
- State Key Laboratory of High Power Semiconductor Lasers , Changchun University of Science and Technology , Changchun 130022 , China
| | - Zhenyu Yang
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education School of Physics and Technology , Wuhan University , Wuhan 430072 , China
| | - Xuming Zou
- Key Laboratory for Micro/Nano-Optoelectronic Devices of Ministry of Education School of Physics and Electronics , Hunan University , Changsha 410082 , China
| | - Peng Wang
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics , Chinese Academy of Sciences , Shanghai 200083 , China
| | - Wenjin Luo
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics , Chinese Academy of Sciences , Shanghai 200083 , China
| | - Qing Li
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics , Chinese Academy of Sciences , Shanghai 200083 , China
| | - Lei Liao
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education School of Physics and Technology , Wuhan University , Wuhan 430072 , China
- Key Laboratory for Micro/Nano-Optoelectronic Devices of Ministry of Education School of Physics and Electronics , Hunan University , Changsha 410082 , China
| | - Weida Hu
- State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics , Chinese Academy of Sciences , Shanghai 200083 , China
| | - Zhipeng Wei
- State Key Laboratory of High Power Semiconductor Lasers , Changchun University of Science and Technology , Changchun 130022 , China
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Ghosh J, Ghosh R, Giri PK. Strong Cathodoluminescence and Fast Photoresponse from Embedded CH 3NH 3PbBr 3 Nanoparticles Exhibiting High Ambient Stability. ACS APPLIED MATERIALS & INTERFACES 2019; 11:14917-14931. [PMID: 30924637 DOI: 10.1021/acsami.8b21050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This study presents a comprehensive analysis of the strong cathodoluminescence (CL), photoluminescence (PL), and photoresponse characteristics of CH3NH3PbBr3 nanoparticles (NPs) embedded in a mesoporous nanowire (NW) template. Our study revealed a direct correlation between the CL and PL emissions from the perovskite NPs (Per NPs), for the first time. Per NPs are fabricated by a simple spin-coating of a perovskite precursor on the surface of metal-assisted chemically etched mesoporous Si NW arrays. The Per NPs confined in the mesopores show blue-shifted and enhanced CL emission as compared to the bare perovskite film, while the PL intensity of Per NPs is dramatically high compared to that of their bulk counterpart. A systematic analysis of the CL/PL spectra reveals that the quantum confinement effect and ultralow defects in Per NPs are mainly responsible for the enhanced CL and PL emissions. Low-temperature PL and time-resolved PL analysis confirm the high exciton binding energy and radiative recombination in Per NPs. The room temperature PL quantum yield of the Per NP film on the NW template was found to be 40.5%, while that of Per film was 2.8%. The Per NPs show improved ambient air stability than the bare film due to the protection provided by the dense NW array, since a dense NW array can slow down the lateral diffusion of oxygen and water molecules in Per NPs. Interestingly, the Si NW/Per NP junction shows superior visible light photodetection and the prototype photodetector shows a high responsivity (0.223 A/W) with response speeds of 0.32 and 0.28 s of growth and decay in photocurrent, respectively, at 2 V applied bias, which is significantly better than the reported photodetectors based on CH3NH3PbBr3 nanostructures. This work demonstrates a low-cost fabrication of CH3NH3PbBr3 NPs on a novel porous NW template, which shows excellent photophysical and optoelectronic properties with superior ambient stability.
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Affiliation(s)
| | - Ramesh Ghosh
- Department of Physics and Astronomy , Seoul National University , Seoul 151747 , Republic of Korea
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32
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Parbatani A, Song ES, Claypoole J, Yu B. High performance broadband bismuth telluride tetradymite topological insulator photodiode. NANOTECHNOLOGY 2019; 30:165201. [PMID: 30620938 DOI: 10.1088/1361-6528/aafc84] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
A small bulk gap and the presence of Dirac electrons due to conductive surface states make tetradymite topological insulators promising candidates for optoelectronic devices. In this work, we demonstrate a highly responsive Bi2Te3-Si heterostructure photodiode. The thermally evaporated Bi2Te3 film, exhibiting a nanocrystalline nature, shows p-type doping behavior due to bismuth vacancies. As a result of the work function difference between Bi2Te3 and p-type Si, charge transfer occurs and a Schottky barrier is formed. Using the thermionic emission model, the barrier height (ΦB) is extracted to be ∼0.405 eV. For minimizing the effect of extrinsic defects, the photodiodes were capped with graphene or Si3N4. Since graphene acts as an efficient photoexcited carrier collector, the graphene capped device outperforms the Si3N4 capped device. The higher quality Bi2Te3 nanocrystalline film of the Si3N4 capped photodiode contributes to a one-order-of-magnitude improvement in responsivity at 1550 nm wavelength, as compared to the graphene capped photodiode. The Si3N4 capped photodiode shows photoresponse even at zero bias for 1550 nm wavelength. Built-in potential due to charge transfer at the interface of Bi2Te3 and Si capped with a graphene electrode exhibits the highest responsivity (8.9 A W-1). Broadband photodetection is observed in both types of photodiodes.
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Affiliation(s)
- Asish Parbatani
- SUNY Polytechnic Institute, The State University of New York Albany, NY 12203, United States of America
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33
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Novel synthesis of topological insulator based nanostructures (Bi 2Te 3) demonstrating high performance photodetection. Sci Rep 2019; 9:3804. [PMID: 30846755 PMCID: PMC6405830 DOI: 10.1038/s41598-019-40394-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 02/13/2019] [Indexed: 11/18/2022] Open
Abstract
The rapid progress in 2D material research has triggered the growth of various quantum nanostructures- nanosheets, nanowires, nanoribbons, nanocrystals and the exotic nature originating through 2D heterostructures has extended the synthesis of hybrid materials beyond the conventional approaches. Here we introduce simple, one step confined thin melting approach to form nanostructures of TI (topological insulator) materials, their hybrid heterostructures with other novel 2D materials and their scalable growth. The substrate and temperature dependent growth is investigated on insulating, superconducting, metallic, semiconducting and ferromagnetic materials. The temperature dependent synthesis enables the growth of single, few quintuples to nanosheets and nanocrystals. The density of nanostructure growth is seen more on fabricated patterns or textured substrates. The fabricated nanostructure based devices show the broadband photodetection from ultraviolet to near infrared and exhibit high photoresponsivity. Ultimately, this unique synthesis process will give easy access to fabricate devices on user friendly substrates, study nanostructures and scalable growth will enable their future technology applications.
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34
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Bhattacharyya B, Awana VPS, Senguttuvan TD, Ojha VN, Husale S. Proximity-induced supercurrent through topological insulator based nanowires for quantum computation studies. Sci Rep 2018; 8:17237. [PMID: 30467364 PMCID: PMC6250704 DOI: 10.1038/s41598-018-35424-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 11/06/2018] [Indexed: 11/11/2022] Open
Abstract
Proximity-induced superconducting energy gap in the surface states of topological insulators has been predicted to host the much wanted Majorana fermions for fault-tolerant quantum computation. Recent theoretically proposed architectures for topological quantum computation via Majoranas are based on large networks of Kitaev’s one-dimensional quantum wires, which pose a huge experimental challenge in terms of scalability of the current single nanowire based devices. Here, we address this problem by realizing robust superconductivity in junctions of fabricated topological insulator (Bi2Se3) nanowires proximity-coupled to conventional s-wave superconducting (W) electrodes. Milling technique possesses great potential in fabrication of any desired shapes and structures at nanoscale level, and therefore can be effectively utilized to scale-up the existing single nanowire based design into nanowire based network architectures. We demonstrate the dominant role of ballistic topological surface states in propagating the long-range proximity induced superconducting order with high IcRN product in long Bi2Se3 junctions. Large upper critical magnetic fields exceeding the Chandrasekhar-Clogston limit suggests the existence of robust superconducting order with spin-triplet cooper pairing. An unconventional inverse dependence of IcRN product on the width of the nanowire junction was also observed.
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Affiliation(s)
- Biplab Bhattacharyya
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - V P S Awana
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - T D Senguttuvan
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - V N Ojha
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - Sudhir Husale
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India. .,National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.
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35
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Friedensen SE, Parkin WM, Mlack JT, Drndić M. Transmission Electron Microscope Nanosculpting of Topological Insulator Bismuth Selenide. ACS NANO 2018; 12:6949-6955. [PMID: 29890079 DOI: 10.1021/acsnano.8b02377] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present a process for sculpting Bi2Se3 nanoflakes into application-relevant geometries using a high-resolution transmission electron microscope. This process takes several minutes to sculpt small areas and can be used to cut the Bi2Se3 into wires and rings, to thin areas of the Bi2Se3, and to drill circular holes and lines. We determined that this method allows for sub 10 nm features and results in clean edges along the drilled regions. Using in situ high-resolution imaging, selected area diffraction, and atomic force microscopy, we found that this lithography process preserves the crystal structure of Bi2Se3. TEM sculpting is more precise and potentially results in cleaner edges than does ion-beam modification; therefore, the promise of this method for thermoelectric and topological devices calls for further study into the transport properties of such structures.
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Affiliation(s)
- Sarah E Friedensen
- Department of Physics and Astronomy , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - William M Parkin
- Department of Physics and Astronomy , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Jerome T Mlack
- Department of Physics and Astronomy , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Marija Drndić
- Department of Physics and Astronomy , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
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36
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Hossain M, Kumar GS, Barimar Prabhava SN, Sheerin ED, McCloskey D, Acharya S, Rao KDM, Boland JJ. Transparent, Flexible Silicon Nanostructured Wire Networks with Seamless Junctions for High-Performance Photodetector Applications. ACS NANO 2018; 12:4727-4735. [PMID: 29726674 DOI: 10.1021/acsnano.8b01387] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Optically transparent photodetectors are crucial in next-generation optoelectronic applications including smart windows and transparent image sensors. Designing photodetectors with high transparency, photoresponsivity, and robust mechanical flexibility remains a significant challenge, as is managing the inevitable trade-off between high transparency and strong photoresponse. Here we report a scalable method to produce flexible crystalline Si nanostructured wire (NW) networks fabricated from silicon-on-insulator (SOI) with seamless junctions and highly responsive porous Si segments that combine to deliver exceptional performance. These networks show high transparency (∼92% at 550 nm), broadband photodetection (350 to 950 nm) with excellent responsivity (25 A/W), optical response time (0.58 ms), and mechanical flexibility (1000 cycles). Temperature-dependent photocurrent measurements indicate the presence of localized electronic states in the porous Si segments, which play a crucial role in light harvesting and photocarrier generation. The scalable low-cost approach based on SOI has the potential to deliver new classes of flexible optoelectronic devices, including next-generation photodetectors and solar cells.
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Affiliation(s)
- Mozakkar Hossain
- Technical Research Centre , Indian Association for the Cultivation of Science , Jadavpur , Kolkata - 700032 , India
| | - Gundam Sandeep Kumar
- Centre for Advanced Materials , Indian Association for the Cultivation of Science , Jadavpur , Kolkata - 700032 , India
| | - S N Barimar Prabhava
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) , Trinity College Dublin , College Green, Dublin 2 , Ireland
| | - Emmet D Sheerin
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) , Trinity College Dublin , College Green, Dublin 2 , Ireland
| | - David McCloskey
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) , Trinity College Dublin , College Green, Dublin 2 , Ireland
| | - Somobrata Acharya
- Centre for Advanced Materials , Indian Association for the Cultivation of Science , Jadavpur , Kolkata - 700032 , India
| | - K D M Rao
- Technical Research Centre , Indian Association for the Cultivation of Science , Jadavpur , Kolkata - 700032 , India
| | - John J Boland
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) , Trinity College Dublin , College Green, Dublin 2 , Ireland
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37
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Lu X, Hao Q, Cen M, Zhang G, Sun J, Mao L, Cao T, Zhou C, Jiang P, Yang X, Bao X. Observation and Manipulation of Visible Edge Plasmons in Bi 2Te 3 Nanoplates. NANO LETTERS 2018; 18:2879-2884. [PMID: 29595988 DOI: 10.1021/acs.nanolett.8b00023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Noble metals, like Ag and Au, are the most intensively studied plasmonic materials in the visible range. Plasmons in semiconductors, however, are usually believed to be in the infrared wavelength region due to the intrinsic low carrier concentrations. Herein, we observe the edge plasmon modes of Bi2Te3, a narrow-band gap semiconductor, in the visible spectral range using photoemission electron microscopy (PEEM). The Bi2Te3 nanoplates excited by 400 nm femtosecond laser pulses exhibit strong photoemission intensities along the edges, which follow a cos4 dependence on the polarization state of incident beam. Because of the phase retardation effect, plasmonic response along different edges can be selectively exited. The thickness-dependent photoemission intensities exclude the spin-orbit induced surface states as the origin of these plasmonic modes. Instead, we propose that the interband transition-induced nonequilibrium carriers might play a key role. Our results not only experimentally demonstrate the possibility of visible plasmons in semiconducting materials but also open up a new avenue for exploring the optical properties of topological insulator materials using PEEM.
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Affiliation(s)
- Xiaowei Lu
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | | | - Mengjia Cen
- Department of Biomedical Engineering , Dalian University of Technology , Dalian , Liaoning 116024 , China
| | | | | | - Libang Mao
- Department of Biomedical Engineering , Dalian University of Technology , Dalian , Liaoning 116024 , China
| | - Tun Cao
- Department of Biomedical Engineering , Dalian University of Technology , Dalian , Liaoning 116024 , China
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38
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Sharma A, Srivastava AK, Senguttuvan TD, Husale S. Robust broad spectral photodetection (UV-NIR) and ultra high responsivity investigated in nanosheets and nanowires of Bi 2Te 3 under harsh nano-milling conditions. Sci Rep 2017; 7:17911. [PMID: 29263434 PMCID: PMC5738343 DOI: 10.1038/s41598-017-18166-4] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 12/01/2017] [Indexed: 11/09/2022] Open
Abstract
Due to miniaturization of device dimensions, the next generation's photodetector based devices are expected to be fabricated from robust nanostructured materials. Hence there is an utmost requirement of investigating exotic optoelectronic properties of nanodevices fabricated from new novel materials and testing their performances at harsh conditions. The recent advances on 2D layered materials indicate exciting progress on broad spectral photodetection (BSP) but still there is a great demand for fabricating ultra-high performance photodetectors made from single material sensing broad electromagnetic spectrum since the detection range 325 nm-1550 nm is not covered by the conventional Si or InGaAs photodetectors. Alternatively, Bi2Te3 is a layered material, possesses exciting optoelectronic, thermoelectric, plasmonics properties. Here we report robust photoconductivity measurements on Bi2Te3 nanosheets and nanowires demonstrating BSP from UV to NIR. The nanosheets of Bi2Te3 show the best ultra-high photoresponsivity (~74 A/W at 1550 nm). Further these nanosheets when transform into nanowires using harsh FIB milling conditions exhibit about one order enhancement in the photoresponsivity without affecting the performance of the device even after 4 months of storage at ambient conditions. An ultra-high photoresponsivity and BSP indicate exciting robust nature of topological insulator based nanodevices for optoelectronic applications.
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Affiliation(s)
- Alka Sharma
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - A K Srivastava
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - T D Senguttuvan
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - Sudhir Husale
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India. .,National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.
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39
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Materials analysis and focused ion beam nanofabrication of topological insulator Bi 2Se 3. Sci Rep 2017; 7:13466. [PMID: 29044163 PMCID: PMC5647386 DOI: 10.1038/s41598-017-13863-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 10/02/2017] [Indexed: 11/08/2022] Open
Abstract
Focused ion beam milling allows manipulation of the shape and size of nanostructures to create geometries potentially useful for opto-electronics, thermoelectrics, and quantum computing. We focus on using the ion beam to control the thickness of Bi2Se3 and to create nanowires from larger structures. Changes in the material structure of Bi2Se3 nanomaterials that have been milled using a focused ion beam are presented. In order to characterize the effects of ion beam processing on the samples, we use a variety of techniques including analytical transmission electron microscopy and atomic force microscopy. The results show that while part of the material remains intact after shaping, amorphous regions form where the beam has been used to thin the sample. For wires created by thinning the material down to the substrate, the sidewalls of the wires appear intact based on diffraction images from samples cut at an angle, but thin crystalline regions remain at the wire edges. Even with the resulting defects and limitations when thinning, focused ion beam milling can be used to fabricate custom geometries of Bi2Se3 nanostructures.
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40
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Bai ZQ, Liu ZW. A broadband photodetector based on Rhodamine B-sensitized ZnO nanowires film. Sci Rep 2017; 7:11384. [PMID: 28900174 PMCID: PMC5595828 DOI: 10.1038/s41598-017-11154-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 08/14/2017] [Indexed: 11/29/2022] Open
Abstract
A broadband photodetector has been developed on the basis of ZnO nanowires (NWs)/Rhodamine B (RhB) hybrid system. The device is fabricated by spraying NWs on to gold interdigital electrodes followed by modifying the NWs via an RhB solution-casting process. Measurements show that the as-fabricated device demonstrates photoresponsivity ranging from 300 nm to 700 nm with a bandwidth as large as 400 nm. The role of the dye sensitizer adsorbed on the surface of NWs is modeled to alter the transportation path of photo-generated carriers. The calculations based on the measurements reveal that the device exhibits a prominent responsivity in the interested band with maximum responsivity of 5.5 A/W for ultraviolet (UV) light and 3 A/W for visible (VIS) light under 8 V bias, respectively. The sensitization not only widens the response spectrum with external quantum efficiency leaping up to 771% at VIS but also improves UV responsivity with maximum 51% enhancement. From the time–dependent photo-current measurement, it is found that the response time (rise and decay times in total) of the device largely reduced from 17.5 s to 3.3 s after sensitization. A comparison of the obtained photodetector with other ZnO-based photodetectors is summarized from the view point of responsivity and bandwidth.
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Affiliation(s)
- Zheng Qi Bai
- Institute of Microelectronics, Tsinghua University, Beijing, 100084, China
| | - Ze Wen Liu
- Institute of Microelectronics, Tsinghua University, Beijing, 100084, China.
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41
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Evidence of robust 2D transport and Efros-Shklovskii variable range hopping in disordered topological insulator (Bi 2Se 3) nanowires. Sci Rep 2017; 7:7825. [PMID: 28798385 PMCID: PMC5552836 DOI: 10.1038/s41598-017-08018-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 07/03/2017] [Indexed: 11/08/2022] Open
Abstract
We report the experimental observation of variable range hopping conduction in focused-ion-beam (FIB) fabricated ultra-narrow nanowires of topological insulator (Bi2Se3). The value of the exponent (d + 1)-1 in the hopping equation was extracted as [Formula: see text]for different widths of nanowires, which is the proof of the presence of Efros-Shklovskii hopping transport mechanism in a strongly disordered system. High localization lengths (0.5 nm, 20 nm) were calculated for the devices. A careful analysis of the temperature dependent fluctuations present in the magnetoresistance curves, using the standard Universal Conductance Fluctuation theory, indicates the presence of 2D topological surface states. Also, the surface state contribution to the conductance was found very close to one conductance quantum. We believe that our experimental findings shed light on the understanding of quantum transport in disordered topological insulator based nanostructures.
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42
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Sun H, Jiang T, Zang Y, Zheng X, Gong Y, Yan Y, Xu Z, Liu Y, Fang L, Cheng X, He K. Broadband ultrafast photovoltaic detectors based on large-scale topological insulator Sb 2Te 3/STO heterostructures. NANOSCALE 2017; 9:9325-9332. [PMID: 28498377 DOI: 10.1039/c7nr01715d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Topological insulators (TIs) are new states of quantum matter in which the spin-momentum-locked surface states reside in the bulk insulating gap and have triggered extensive investigations on fundamental properties and potential applications. Herein, we report scalable, broadband photovoltaic detectors based on the topological insulator Sb2Te3/strontium titanate (STO) heterostructure. Large-scale (2 mm × 5 mm), high crystalline quality p-type Sb2Te3 films were fabricated on an n-type STO substrate by the molecular beam epitaxy (MBE) method. The Sb2Te3/STO heterostructures exhibited pronounced photovoltaic behavior in a wide range of temperatures as a result of a strong built-in field at the hetero-interface. Superior performances of broadband (from visible to infrared, 405 nm-1550 nm) and ultrafast (rise time ∼30 μs, fall time ∼95 μs) photoresponses were achieved under ambient conditions. The prominent repeatability and stability indicated that our photodetectors can operate effectively in harsh circumstances. These results show that stacking the topological insulator thin films on a strongly correlated oxide substrate using the MBE approach holds great promise for high performance optoelectronic applications.
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Affiliation(s)
- Honghui Sun
- State Key Laboratory of High Performance Computing, College of Computer, National University of Defense Technology, Changsha 410073, China.
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43
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Zhang H, Man B, Zhang Q. Topological Crystalline Insulator SnTe/Si Vertical Heterostructure Photodetectors for High-Performance Near-Infrared Detection. ACS APPLIED MATERIALS & INTERFACES 2017; 9:14067-14077. [PMID: 28398029 DOI: 10.1021/acsami.7b01098] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Due to the gapless surface state and narrow bulk band gap, the light absorption of topological crystalline insulators covers a broad spectrum ranging from terahertz to infrared, revealing promising applications in new generation optoelectronic devices. To date, the photodetectors based on topological insulators generally suffer from a large dark current and a weaker photocurrent especially under the near-infrared lights, which severely limits the practical application of devices. Owing to the lower excitation energy of infrared lights, the photodetection application of topological crystalline insulators in the near-infrared region relies critically on understanding the preparation and properties of their heterostructures. Herein, we fabricate the high-quality topological crystalline insulator SnTe film/Si vertical heterostructure by a simple physical vapor deposition process. The resultant heterostructure exhibits an excellent diode characteristic, enabling the construction of high-performance near-infrared photodetectors. The built-in electric field at SnTe/Si interface enhances the absorption efficiency of near-infrared lights and greatly facilitates the separation of photogenerated carriers, making the device capable of operating as a self-driven photodetector. The as-grown SnTe film acts as the hole transport layer in heterostructure photodetectors, promoting the transport of holes to electrode and reducing electron-hole recombination effectively. These merits enable the SnTe/Si heterostructure photodetector to have a high responsivity of 2.36 AW-1, a high detectivity of 1.54 × 1014 Jones, and a large bandwidth of 104 Hz in the near-infrared wavelength, which makes the detector have a promising market in novel device applications.
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Affiliation(s)
- Hongbin Zhang
- School of Physics and Electronics, Shandong Normal University , Jinan, Shandong 250014, P. R. China
| | - Baoyuan Man
- School of Physics and Electronics, Shandong Normal University , Jinan, Shandong 250014, P. R. China
| | - Qi Zhang
- School for Radiological and Interdisciplinary Sciences (RAD-X) and Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection, Medical College of Soochow University , Suzhou, Jiangsu 215123, P. R. China
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44
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Kazim S, Sharma A, Yadav S, Gajar B, Joshi LM, Mishra M, Gupta G, Husale S, Gupta A, Sahoo S, Ojha VN. Light Induced Electron-Phonon Scattering Mediated Resistive Switching in Nanostructured Nb Thin Film Superconductor. Sci Rep 2017; 7:881. [PMID: 28408755 PMCID: PMC5429844 DOI: 10.1038/s41598-017-00976-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/20/2017] [Indexed: 11/24/2022] Open
Abstract
The elemental Nb is mainly investigated for its eminent superconducting properties. In contrary, we report of a relatively unexplored property, namely, its superior optoelectronic property in reduced dimension. We demonstrate here that nanostructured Nb thin films (NNFs), under optical illumination, behave as room temperature photo-switches and exhibit bolometric features below its superconducting critical temperature. Both photo-switch and superconducting bolometric behavior are monitored by its resistance change with light in visible and near infrared (NIR) wavelength range. Unlike the conventional photodetectors, the NNF devices switch to higher resistive states with light and the corresponding resistivity change is studied with thickness and grain size variations. At low temperature in its superconducting state, the light exposure shifts the superconducting transition towards lower temperature. The room temperature photon sensing nature of the NNF is explained by the photon assisted electron-phonon scattering mechanism while the low temperature light response is mainly related to the heat generation which essentially changes the effective temperature for the device and the device is capable of sensing a temperature difference of few tens of milli-kelvins. The observed photo-response on the transport properties of NNFs can be very important for future superconducting photon detectors, bolometers and phase slip based device applications.
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Affiliation(s)
- Shafaq Kazim
- Time & Frequency and Electrical & Electronics Metrology, National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - Alka Sharma
- Time & Frequency and Electrical & Electronics Metrology, National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - Sachin Yadav
- Time & Frequency and Electrical & Electronics Metrology, National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - Bikash Gajar
- Time & Frequency and Electrical & Electronics Metrology, National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - Lalit M Joshi
- Time & Frequency and Electrical & Electronics Metrology, National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - Monu Mishra
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,Advanced Materials & Devices Division, National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - Govind Gupta
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,Advanced Materials & Devices Division, National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - Sudhir Husale
- Time & Frequency and Electrical & Electronics Metrology, National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - Anurag Gupta
- Time & Frequency and Electrical & Electronics Metrology, National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
| | - Sangeeta Sahoo
- Time & Frequency and Electrical & Electronics Metrology, National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India. .,Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.
| | - V N Ojha
- Time & Frequency and Electrical & Electronics Metrology, National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India.,Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S Krishnan Road, New Delhi, 110012, India
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45
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Extremely high-performance visible light photodetector in the Sb 2SeTe 2 nanoflake. Sci Rep 2017; 7:45413. [PMID: 28350014 PMCID: PMC5368654 DOI: 10.1038/srep45413] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 02/23/2017] [Indexed: 11/09/2022] Open
Abstract
The photocurrent was performed in the Sb2SeTe2 topological insulator at a wavelength of 532 nm. It exhibits extremely high performance that the responsivity and the photoconductive gain reach 2293 AW−1 and 5344 at 1 V. This high photoresponse is orders of magnitude higher than most reported values in topological insulators and two-dimensional transitional metal dichalcogenides. This finding suggests that the Sb2SeTe2 nanoflake has great potential for future optoelectronic device applications.
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46
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Bhattacharyya B, Sharma A, Awana VPS, Srivastava AK, Senguttuvan TD, Husale S. Observation of quantum oscillations in FIB fabricated nanowires of topological insulator (Bi 2Se 3). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:115602. [PMID: 28170351 DOI: 10.1088/1361-648x/aa5536] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In the last few years, research based on topological insulators (TIs) has been of great interest due to their intrinsic exotic fundamental properties and potential applications such as quantum computers or spintronics. The fabrication of TI nanodevices and the study of their transport properties has mostly focused on high quality crystalline nanowires or nanoribbons. Here, we report a robust approach to Bi2Se3 nanowire formation from deposited flakes using an ion beam milling method. Fabricated Bi2Se3 nanowire devices were employed to investigate the robustness of the topological surface state (TSS) to gallium ion doping and any deformation in the material due to the fabrication tools. We report on the quantum oscillations in magnetoresistance (MR) curves under the parallel magnetic field. The resistance versus magnetic field curves are studied and compared with Aharonov-Bohm (AB) interference effects, which further demonstrate transport through the TSS. The fabrication route and observed electronic transport properties indicate clear quantum oscillations, and these can be exploited further in studying the exotic electronic properties associated with TI-based nanodevices.
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Affiliation(s)
- Biplab Bhattacharyya
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr K S Krishnan Road, New Delhi 110012, India. National Physical Laboratory, Council of Scientific and Industrial Research, Dr K S Krishnan Road, New Delhi 110012, India
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47
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Bhattacharyya B, Sharma A, Awana VPS, Senguttuvan TD, Husale S. FIB synthesis of Bi 2Se 3 1D nanowires demonstrating the co-existence of Shubnikov-de Haas oscillations and linear magnetoresistance. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:07LT01. [PMID: 28035087 DOI: 10.1088/1361-648x/29/7/07lt01] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Since the discovery of topological insulators (TIs), there are considerable interests in demonstrating metallic surface states (SS), their shielded robust nature to the backscattering and study their properties at nanoscale dimensions by fabricating nanodevices. Here we address an important scientific issue related to TI whether one can clearly demonstrate the robustness of topological surface states (TSS) to the presence of disorder that does not break any fundamental symmetry. The simple straightforward method of FIB milling was used to synthesize nanowires of Bi2Se3 which we believe is an interesting route to test robustness of TSS and the obtained results are new compared to many of the earlier papers on quantum transport in TI demonstrating the robustness of metallic SS to gallium (Ga) doping. In the presence of perpendicular magnetic field, we have observed the co-existence of Shubnikov-de Haas oscillations and linear magnetoresistance (LMR), which was systematically investigated for different channel lengths, indicating the Dirac dispersive surface states. The transport properties and estimated physical parameters shown here demonstrate the robustness of SS to the fabrication tools triggering flexibility to explore new exotic quantum phenomena at nanodevice level.
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Affiliation(s)
- Biplab Bhattacharyya
- Academy of Scientific and Innovative Research (AcSIR), National Physical Laboratory, Council of Scientific and Industrial Research, Dr K S Krishnan Road, New Delhi 110012, India. National Physical Laboratory, Council of Scientific and Industrial Research, Dr K S Krishnan Road, New Delhi 110012, India
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48
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Huang SM, Huang SJ, Yan YJ, Yu SH, Chou M, Yang HW, Chang YS, Chen RS. Highly responsive photoconductance in a Sb2SeTe2 topological insulator nanosheet at room temperature. RSC Adv 2017. [DOI: 10.1039/c7ra06151j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
SEM picture of the Sb2SeTe2 nanosheet. The top-right figure shows the linear current–voltage curve indicating the ohmic contact between the Pt electrodes and Sb2SeTe2 nanosheet.
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Affiliation(s)
- Shiu-Ming Huang
- Department of Physics
- National Sun Yat-Sen University
- Kaohsiung 80424
- Taiwan
| | - Shih-Jhe Huang
- Department of Physics
- National Sun Yat-Sen University
- Kaohsiung 80424
- Taiwan
| | - You-Jhih Yan
- Department of Materials and Optoelectronic Science
- National Sun Yat-Sen University
- Kaohsiung 80424
- Taiwan
| | - Shih-Hsun Yu
- Department of Materials and Optoelectronic Science
- National Sun Yat-Sen University
- Kaohsiung 80424
- Taiwan
| | - Mitch Chou
- Department of Materials and Optoelectronic Science
- National Sun Yat-Sen University
- Kaohsiung 80424
- Taiwan
- Taiwan Consortium of Emergent Crystalline Materials, TCECM
| | - Hung-Wei Yang
- Graduate Institute of Applied Science and Technology
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Yu-Shin Chang
- Graduate Institute of Applied Science and Technology
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Ruei-San Chen
- Graduate Institute of Applied Science and Technology
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
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49
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Chao J, Xing S, Zhao J, Qin C, Duan D, Zhao Y, He Q. Bismuth sulfide nanoflowers as high performance near-infrared laser detectors and visible-light-driven photocatalysts. RSC Adv 2016. [DOI: 10.1039/c6ra06339j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bi2S3 nanoflowers flexible laser detector.
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Affiliation(s)
- Junfeng Chao
- College of Electronic Information and Electric Engineering
- Anyang Institute of Technology
- Anyang 455000
- China
| | - Shumin Xing
- College of Mathematics and Physics
- Anyang Institute of Technology
- Anyang 455000
- China
| | - Jianzhou Zhao
- College of Electronic Information and Electric Engineering
- Anyang Institute of Technology
- Anyang 455000
- China
| | - Changhai Qin
- College of Electronic Information and Electric Engineering
- Anyang Institute of Technology
- Anyang 455000
- China
| | - Degong Duan
- College of Electronic Information and Electric Engineering
- Anyang Institute of Technology
- Anyang 455000
- China
| | - Yuliang Zhao
- College of Mathematics and Physics
- Anyang Institute of Technology
- Anyang 455000
- China
| | - Qiang He
- Research and Development Office
- Anyang Institute of Technology
- Anyang 455000
- China
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