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Du B, Xiong S, Sun L, Tagawa Y, Inoue D, Hashizume D, Wang W, Guo R, Yokota T, Wang S, Ishida Y, Lee S, Fukuda K, Someya T. A water-resistant, ultrathin, conformable organic photodetector for vital sign monitoring. SCIENCE ADVANCES 2024; 10:eadp2679. [PMID: 39047100 PMCID: PMC11268404 DOI: 10.1126/sciadv.adp2679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Accepted: 06/20/2024] [Indexed: 07/27/2024]
Abstract
Ultrathin flexible photodetectors can be conformably integrated with the human body, offering promising advancements for emerging skin-interfaced sensors. However, the susceptibility to degradation in ambient and particularly in aqueous environments hinders their practical application. Here, we report a 3.2-micrometer-thick water-resistant organic photodetector capable of reliably monitoring vital sign while submerged underwater. Embedding the organic photoactive layer in an adhesive elastomer matrix induces multidimensional hybrid phase separation, enabling high adhesiveness of the photoactive layer on both the top and bottom surfaces with maintained charge transport. This improves the water-immersion stability of the photoactive layer and ensures the robust sealing of interfaces within the device, notably suppressing fluid ingression in aqueous environments. Consequently, our fabricated ultrathin organic photodetector demonstrates stability in deionized water or cell nutrient media over extended periods, high detectivity, and resilience to cyclic mechanical deformation. We also showcase its potential for vital sign monitoring while submerged underwater.
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Affiliation(s)
- Baocai Du
- Department of Electrical Engineering and Information Systems, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Sixing Xiong
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Lulu Sun
- Thin-Film Device Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yusaku Tagawa
- Department of Electrical Engineering and Information Systems, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Daishi Inoue
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Wenqing Wang
- Department of Electrical Engineering and Information Systems, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Ruiqi Guo
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Tomoyuki Yokota
- Department of Electrical Engineering and Information Systems, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Institute of Engineering Innovation, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Shuxu Wang
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yasuhiro Ishida
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Sunghoon Lee
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Thin-Film Device Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kenjiro Fukuda
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Thin-Film Device Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Takao Someya
- Department of Electrical Engineering and Information Systems, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Thin-Film Device Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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2
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Zhao J, Liu Q, Du Q, Zheng X, Wang W, Qin S. Sensitive organic/inorganic polarized photodetectors enhanced by charge transfer with image sensing capacity. OPTICS EXPRESS 2024; 32:12636-12644. [PMID: 38571081 DOI: 10.1364/oe.519556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 03/10/2024] [Indexed: 04/05/2024]
Abstract
Organic photodetectors (OPDs) have attracted increasing attention in the future wearable sensing and real-time health monitoring, due to their intrinsic features including the mechanical flexibility, low-cost processing and cooling-free operations; while their performances are lagging as the results of inferior carrier mobility and small exciton diffusion coefficient of organic molecules. Graphene exhibits the great photoresponse with wide spectral bandwidth and high response speed. However, weak light absorption and the absence of a gain mechanism have limited its photoresponsivity. Here, we report a sensitive organic/inorganic phototransistor with fast response speed by coupling PTCDA organic single crystal with the monolayer graphene. The long range exciton diffusion in highly ordered π-conjugated molecules, efficient exciton dissociation and charge transfer at the PTCDA/graphene heterointerfaces, and the high mobility of graphene enable a high responsivity (8 × 104A/W), short response time (220 µs) and excellent specific detectivity (>1011 Jones), which is higher than the level of commercial on-chip device. This interfacial photogating effect is verified by the high-resolution spatial photocurrent mapping experiment. In addition, the high sensitivity to polarization is clear and the ultrahigh photoconductive gain enables a near-infrared (NIR) response for 980 and 1550 nm. Finally, high-speed visible and NIR imaging applications are successfully demonstrated. This work suggests that high quality organic single crystal/graphene is a promising platform for future high performance optoelectronic systems and imaging applications.
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Li M, Qin S, Zheng X, Du Q, Liu Y, Li S, Li H, Wang W, Wang F. Gate Controlled Photocurrent Generation Mechanism in Air-Grown Organic Single Crystals for High-Speed Multiband Imaging. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48442-48451. [PMID: 37788404 DOI: 10.1021/acsami.3c08058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Organic semiconductors herald new opportunities for fabricating high-performance flexible and wearable optoelectronic devices owing to their intrinsic mechanical flexibility, excellent optical absorption, and cool-free operation. The photocurrent generation mechanisms are of multiple physical origins, including photoconductive, photovoltaic, and photogating effects, and the influence of individual effects on the device figures-of-merit is still not well understood. Here we fabricated a high-performance pentacene single-crystal transistor employing graphene electrodes and demonstrated the modulation from the photogating mechanism to the photoconduction effect by controlling gate bias. Control experiments indicate that the calculation based on transfer curves tends to overestimate the responsivity due to nearby trap states. Using a high frequency-modulated light signal to suppress the trapping process, we successfully measured its intrinsic -3 dB bandwidth of 75 kHz. Finally, high-resolution and UV-NIR high-speed imaging capability was demonstrated. Our work provides new guidelines for understanding the photophysical process and intrinsic performances of organic devices and also confirms the potential of organic single crystals in high-speed imaging applications.
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Affiliation(s)
- Mengru Li
- Key Laboratory of Optical Communication Science and Technology of Shandong Province, School of Physical Science and Information Engineering, Liaocheng University, Liaocheng252059, China
| | - Shuchao Qin
- Key Laboratory of Optical Communication Science and Technology of Shandong Province, School of Physical Science and Information Engineering, Liaocheng University, Liaocheng252059, China
| | - Xialian Zheng
- Key Laboratory of Optical Communication Science and Technology of Shandong Province, School of Physical Science and Information Engineering, Liaocheng University, Liaocheng252059, China
| | - Qianqian Du
- Key Laboratory of Optical Communication Science and Technology of Shandong Province, School of Physical Science and Information Engineering, Liaocheng University, Liaocheng252059, China
| | - Yunlong Liu
- Key Laboratory of Optical Communication Science and Technology of Shandong Province, School of Physical Science and Information Engineering, Liaocheng University, Liaocheng252059, China
| | - Shuhong Li
- Key Laboratory of Optical Communication Science and Technology of Shandong Province, School of Physical Science and Information Engineering, Liaocheng University, Liaocheng252059, China
| | - Huiqin Li
- Bruker (Beijing) Scientific Technology Co. Ltd., Beijing 100081, China
| | - Wenjun Wang
- Key Laboratory of Optical Communication Science and Technology of Shandong Province, School of Physical Science and Information Engineering, Liaocheng University, Liaocheng252059, China
| | - Fengqiu Wang
- School of Electronic Science and Engineering, Nanjing University, Nanjing210093, China
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Chen J, Zhang W, Wang L, Yu G. Recent Research Progress of Organic Small-Molecule Semiconductors with High Electron Mobilities. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2210772. [PMID: 36519670 DOI: 10.1002/adma.202210772] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Organic electronics has made great progress in the past decades, which is inseparable from the innovative development of organic electronic devices and the diversity of organic semiconductor materials. It is worth mentioning that both of these great advances are inextricably linked to the development of organic high-performance semiconductor materials, especially the representative n-type organic small-molecule semiconductor materials with high electron mobilities. The n-type organic small molecules have the advantages of simple synthesis process, strong intermolecular stacking, tunable molecular structure, and easy to functionalize structures. Furthermore, the n-type semiconductor is a remarkable and important component for constructing complementary logic circuits and p-n heterojunction structures. Therefore, n-type organic semiconductors play an extremely important role in the field of organic electronic materials and are the basis for the industrialization of organic electronic functional devices. This review focuses on the modification strategies of organic small molecules with high electron mobility at molecular level, and discusses in detail the applications of n-type small-molecule semiconductor materials with high mobility in organic field-effect transistors, organic light-emitting transistors, organic photodetectors, and gas sensors.
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Affiliation(s)
- Jiadi Chen
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Weifeng Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Liping Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Gui Yu
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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5
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Gan Y, Qin S, Du Q, Zhang Y, Zhao J, Li M, Wang A, Liu Y, Li S, Dong R, Zhang L, Chen X, Liu C, Wang W, Wang F. Ultrafast and Sensitive Self-Powered Photodetector Based on Graphene/Pentacene Single Crystal Heterostructure with Weak Light Detection Capacity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2204332. [PMID: 36285815 PMCID: PMC9762291 DOI: 10.1002/advs.202204332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/12/2022] [Indexed: 06/16/2023]
Abstract
Organic materials exhibit efficient light absorption and low-temperature, large-scale processability, and have stimulated enormous research efforts for next-generation optoelectronics. While, high-performance organic devices with fast speed and high responsivity still face intractable challenges, due to their intrinsic limitations including finite carrier mobility and high exciton binding energy. Here an ultrafast and highly sensitive broadband phototransistor is demonstrated by integrating high-quality pentacene single crystal with monolayer graphene. Encouragingly, the -3 dB bandwidth can reach up to 26 kHz, which is a record-speed for such sensitized organic phototransistors. Enormous absorption, long exciton diffusion length of pentacene crystal, and efficient interfacial charge transfer enable a high responsivity of >105 A W-1 and specific detectivity of >1011 Jones. Moreover, self-powered weak-light detection is realized using a simple asymmetric configuration, and the obvious zero-bias photoresponses can be displayed even under 750 nW cm-2 light intensity. Excellent response speed and photoresponsivity enable high-speed image sensor capability in UV-Vis ranges. The results offer a practical strategy for constructing high-performance self-powered organic hybrid photodetectors, with strong applicability in wireless, weak-light detection, and video-frame-rate imaging applications.
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Affiliation(s)
- Yuquan Gan
- Key Laboratory of Optical Communication Science and Technology of Shandong ProvinceSchool of Physical Science and Information EngineeringLiaocheng UniversityLiaocheng252059China
| | - Shuchao Qin
- Key Laboratory of Optical Communication Science and Technology of Shandong ProvinceSchool of Physical Science and Information EngineeringLiaocheng UniversityLiaocheng252059China
| | - Qianqian Du
- Key Laboratory of Optical Communication Science and Technology of Shandong ProvinceSchool of Physical Science and Information EngineeringLiaocheng UniversityLiaocheng252059China
| | - Yuting Zhang
- Key Laboratory of Optical Communication Science and Technology of Shandong ProvinceSchool of Physical Science and Information EngineeringLiaocheng UniversityLiaocheng252059China
| | - Jing Zhao
- Key Laboratory of Optical Communication Science and Technology of Shandong ProvinceSchool of Physical Science and Information EngineeringLiaocheng UniversityLiaocheng252059China
| | - Mengru Li
- Key Laboratory of Optical Communication Science and Technology of Shandong ProvinceSchool of Physical Science and Information EngineeringLiaocheng UniversityLiaocheng252059China
| | - Anran Wang
- National Laboratory of Solid State Microstructures and Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic MaterialsSchool of Electronic Science and EngineeringNanjing UniversityNanjing210093China
| | - Yunlong Liu
- Key Laboratory of Optical Communication Science and Technology of Shandong ProvinceSchool of Physical Science and Information EngineeringLiaocheng UniversityLiaocheng252059China
| | - Shuhong Li
- Key Laboratory of Optical Communication Science and Technology of Shandong ProvinceSchool of Physical Science and Information EngineeringLiaocheng UniversityLiaocheng252059China
| | - Ruixin Dong
- Key Laboratory of Optical Communication Science and Technology of Shandong ProvinceSchool of Physical Science and Information EngineeringLiaocheng UniversityLiaocheng252059China
| | - Linglong Zhang
- College of PhysicsNanjing University of Aeronautics and AstronauticsKey Laboratory of Aerospace Information Materials and Physics (NUAA)MIITNanjing211106China
| | - Xiaoqing Chen
- Key Laboratory of Light Field Manipulation and Information AcquisitionMinistry of Industry and Information Technologyand Shaanxi Key Laboratory of Optical Information TechnologySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi'an710129China
| | - Cailong Liu
- Key Laboratory of Optical Communication Science and Technology of Shandong ProvinceSchool of Physical Science and Information EngineeringLiaocheng UniversityLiaocheng252059China
| | - Wenjun Wang
- Key Laboratory of Optical Communication Science and Technology of Shandong ProvinceSchool of Physical Science and Information EngineeringLiaocheng UniversityLiaocheng252059China
| | - Fengqiu Wang
- National Laboratory of Solid State Microstructures and Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic MaterialsSchool of Electronic Science and EngineeringNanjing UniversityNanjing210093China
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6
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Liu J, Zhang J. Fabrication of two Se/CsPbBr 3 heterojunctions structures for self-powered UV-visible photodetectors. RSC Adv 2022; 12:33780-33788. [PMID: 36505710 PMCID: PMC9685597 DOI: 10.1039/d2ra06597e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 11/16/2022] [Indexed: 11/26/2022] Open
Abstract
It has been a universal route for enhanced photoelectric performance in photodetectors by constructing a heterojunction that is conductive for suppressing recombination of photogenerated carriers and promoting collection efficiency, and probably producing self-powered capability. However, the dependence of the built-in electric field distributions created by the heterojunction on photodetector performance has rarely been investigated. Herein, two kinds of self-powered UV-visible photodetectors with different device architectures based on single Se wire and CsPbBr3 particles are facilely fabricated and compared. It is found that both the two photodetectors show excellent self-powered operating properties, fast response and binary response. However, due to the different distributions of built-in electric field caused by device architectures, it yields a significant photovoltaic voltage distinction and different responsivity and detectivity spectra for the Se/CsPbBr3 photodetectors. These results are conductive to guide the design of self-powered heterojunction photodetectors by regulating the built-in electric field distributions.
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Affiliation(s)
- Jiaojiao Liu
- School of Electronic and Information Engineering, Changshu Institute of Technology Changshu 215500 China
- Suzhou Key Laboratory of Advanced Lighting and Display Technologies China
| | - Jie Zhang
- School of Electronic and Information Engineering, Changshu Institute of Technology Changshu 215500 China
- Suzhou Key Laboratory of Advanced Lighting and Display Technologies China
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7
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Shi Y, Lv Q, Tao Y, Ma Y, Wang X. Design and Growth of Branched Organic Crystals: Recent Advances and Future Applications. Angew Chem Int Ed Engl 2022; 61:e202208768. [DOI: 10.1002/anie.202208768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Ying‐Li Shi
- Department of Electrical and Electronic Engineering Xi'an Jiaotong-Liverpool University Suzhou Jiangsu 215123 P. R. China
| | - Qiang Lv
- Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
| | - Yi‐Chen Tao
- Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
| | - Ying‐Xin Ma
- School of Chemistry and Chemical Engineering Shandong University of Technology Zibo Shandong 255000 P. R. China
| | - Xue‐Dong Wang
- Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 P. R. China
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8
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Shi YL, Lv Q, Tao YC, Ma YX, Wang XD. Design and Growth of Branched Organic Crystals: Recent Advances and Future Applications. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ying-Li Shi
- The University of Hong Kong Physics The University of Hong Kong 999077 Hong Kong HONG KONG
| | - Qiang Lv
- Soochow University Institute of Functional Nano & Soft Materials (FUNSOM) CHINA
| | - Yi-Chen Tao
- Soochow University Institute of Functional Nano & Soft Materials (FUNSOM) CHINA
| | - Ying-Xin Ma
- Shandong University of Technology School of Chemistry and Chemical Engineering CHINA
| | - Xue-Dong Wang
- Soochow University Institute of Functional Nano and Soft Materials 199 Ren'ai Rd, Suzhou Industrial Park, Suzhou, Jiangsu 215123 Suzhou CHINA
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9
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Zhang C, Chen M, Wang G, Teng M, Ling S, Wang Y, Su Z, Gao K, Yang X, Ma C, Li Y, Zhang Q. Variable Learning‐Memory Behavior from π‐Conjugated Ligand to Ligand‐Containing Cobalt(II) Complex. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Cheng Zhang
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology Suzhou University of Science and Technology Suzhou Jiangsu 215009 China
| | - Mohan Chen
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology Suzhou University of Science and Technology Suzhou Jiangsu 215009 China
| | - Guan Wang
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 China
| | - Ming Teng
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology Suzhou University of Science and Technology Suzhou Jiangsu 215009 China
| | - Songtao Ling
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology Suzhou University of Science and Technology Suzhou Jiangsu 215009 China
| | - Yanan Wang
- School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Zhaojun Su
- College of Energy Soochow Institute for Energy and Materials InnovationS (SIEMIS) Soochow University Suzhou 215006 China
| | - Kun Gao
- College of Energy Soochow Institute for Energy and Materials InnovationS (SIEMIS) Soochow University Suzhou 215006 China
| | - Xinbo Yang
- College of Energy Soochow Institute for Energy and Materials InnovationS (SIEMIS) Soochow University Suzhou 215006 China
| | - Chunlan Ma
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology Suzhou University of Science and Technology Suzhou Jiangsu 215009 China
| | - Yang Li
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology Suzhou University of Science and Technology Suzhou Jiangsu 215009 China
| | - Qichun Zhang
- Department of Materials Science and Engineering City University of Hong Kong Kowloon Hong Kong China
- Center of Super‐Diamond and Advanced Films (COSDAF) City University of Hongkong Hong Kong SAR 999077 China
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10
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Lin CH, Hu L, Guan X, Kim J, Huang CY, Huang JK, Singh S, Wu T. Electrode Engineering in Halide Perovskite Electronics: Plenty of Room at the Interfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2108616. [PMID: 34995372 DOI: 10.1002/adma.202108616] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Contact engineering is a prerequisite for achieving desirable functionality and performance of semiconductor electronics, which is particularly critical for organic-inorganic hybrid halide perovskites due to their ionic nature and highly reactive interfaces. Although the interfaces between perovskites and charge-transporting layers have attracted lots of attention due to the photovoltaic and light-emitting diode applications, achieving reliable perovskite/electrode contacts for electronic devices, such as transistors and memories, remains as a bottleneck. Herein, a critical review on the elusive nature of perovskite/electrode interfaces with a focus on the interfacial electrochemistry effects is presented. The basic guidelines of electrode selection are given for establishing non-polarized interfaces and optimal energy level alignment for perovskite materials. Furthermore, state-of-the-art strategies on interface-related electrode engineering are reviewed and discussed, which aim at achieving ohmic transport and eliminating hysteresis in perovskite devices. The role and multiple functionalities of self-assembled monolayers that offer a unique approach toward improving perovskite/electrode contacts are also discussed. The insights on electrode engineering pave the way to advancing stable and reliable perovskite devices in diverse electronic applications.
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Affiliation(s)
- Chun-Ho Lin
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Long Hu
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Xinwei Guan
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Jiyun Kim
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Chien-Yu Huang
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Jing-Kai Huang
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Simrjit Singh
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Tom Wu
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
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11
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Zhang J, Liu J. In situ construction of a Te/CsPbBr 3 heterojunction for self-powered photodetector. RSC Adv 2022; 12:2729-2735. [PMID: 35425291 PMCID: PMC8979205 DOI: 10.1039/d1ra08236a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 01/03/2022] [Indexed: 12/16/2022] Open
Abstract
In this study, CsPbBr3 particles were prepared by a simple solvent evaporation method in ambient environment; the p–n heterojunction formed by CsPbBr3 particles on the surface of a single long Te wire was used to construct a high-performance Te/CsPbBr3 photodetector. Compared with CsPbBr3 PDs, the Te/CsPbBr3 photodetector showed improved photocurrent, and exhibited characteristics of excellent self-powered performance, broad-spectrum response (UV-visible), and ultra-fast response speed (trise = 0.09 ms). In addition, under zero bias and upon 540 nm light irradiation, the device had good responsivity (0.35 mA W−1), high photosensitivity (up to 100 on/off ratio), and a detectivity of 1.42 × 1010 Jones. This study provides insight into the possibility of manufacturing high-performance self-powered photodetectors through a simple in situ construction of heterojunctions. In this study, CsPbBr3 particles were prepared by a simple solvent evaporation method in ambient environment; the p–n heterojunction formed by CsPbBr3 particles on the surface of a single long Te wire was used to construct a high-performance Te/CsPbBr3 photodetector.![]()
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Affiliation(s)
- Jie Zhang
- College of Electronic and Information Engineering, Changshu Institute of Technology Changshu 215500 China .,Suzhou Key Laboratory of Advanced Lighting and Display Technologies China
| | - Jiaojiao Liu
- College of Electronic and Information Engineering, Changshu Institute of Technology Changshu 215500 China .,Suzhou Key Laboratory of Advanced Lighting and Display Technologies China
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12
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Choi YJ, Jo SB, Cho JH. Monolithic Tandem Multicolor Image Sensor Based on Electrochromic Color-Radix Demultiplexing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2102725. [PMID: 34297459 DOI: 10.1002/adma.202102725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/17/2021] [Indexed: 06/13/2023]
Abstract
Optical data acquisition has been set as one of the milestones to testify the developments aimed at harnessing the full potential of the spatial and temporal data processing capabilities of the advanced semiconductor technology. A highly promising approach to drive the level of acquisition beyond the current technological node is the vertical integration of multiple photodetectors. However, vertical integration so far requires the same level of circuit complexity as lateral integration from the incapability of monolithic integration. Here, an electrochromic device architecture is introduced that enables realization of a monolithic tandem multicolor photodetector. The device, composed of vertically stacked p-type and n-type graphene barristors, is demonstrated to be capable of regulating the balanced charge transport under any desired illumination wavelengths. It exhibits variable anti-ambipolar charge transport behavior, which yields sensitive voltage-controlled photoconductive gain spectra. These electrical behaviors are utilized to fabricate an optoelectronic logic sensor that can demultiplex the desired color coordinate or wavelength in the constituent array with high color accuracy.
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Affiliation(s)
- Young Jin Choi
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Korea
| | - Sae Byeok Jo
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Korea
- Nano Science and Technology Research Institute, Yonsei University, Seoul, 03722, Korea
| | - Jeong Ho Cho
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Korea
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13
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Arora G, Yadav M, Gaur R, Gupta R, Yadav P, Dixit R, Sharma RK. Fabrication, functionalization and advanced applications of magnetic hollow materials in confined catalysis and environmental remediation. NANOSCALE 2021; 13:10967-11003. [PMID: 34160507 DOI: 10.1039/d1nr01010g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Magnetic hollow-structured functional hybrid materials with unique architectures and preeminent properties have always been an area of extensive research. They represent a subtle collaboration of hollow architecture, mesoporous nanostructure and magnetic character. Owing to the merits of a large void space, low density, high specific surface area, well-defined active sites and facile magnetic recovery, these materials present promising application projections in numerous fields, such as drug delivery, adsorption, storage, catalysis and many others. In this review, recent progress in the design, synthesis, functionalization and applications of magnetic hollow-meso/nanostructured materials are discussed. The first part of the review has been dedicated to the preparation and functionalization of the materials. The synthetic protocols have been broadly classified into template-assisted and template-free methods and major trends in their synthesis have been elaborated in detail. Furthermore, the benefits and drawbacks of each method are compared. The later part summarizes the application aspects of confined catalysis in organic transformations and environmental remediation such as degradation of organic pollutants, dyes and antibiotics and adsorption of heavy metal ions. Finally, an outlook of future directions in this research field is highlighted.
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Affiliation(s)
- Gunjan Arora
- Green Chemistry Network Centre, Department of Chemistry, University of Delhi, Delhi-110007, India.
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14
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Yue Q, Wang L, Fan H, Zhao Y, Wei C, Pei C, Song Q, Huang X, Li H. Wrapping Plasmonic Silver Nanoparticles inside One-Dimensional Nanoscrolls of Transition-Metal Dichalcogenides for Enhanced Photoresponse. Inorg Chem 2021; 60:4226-4235. [PMID: 33382623 DOI: 10.1021/acs.inorgchem.0c03235] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The low light absorption of transition-metal dichalcogenide (TMDC) nanosheets hinders their application as high-performance optoelectronic devices. Rolling them up into one-dimensional (1D) nanoscrolls and decorating them with plasmonic nanoparticles (NPs) are both effective strategies for enhancing their performance. When these two approaches are combined, in this work, the light-matter interaction in TMDC nanosheets is greatly improved by encapsulating silver nanoparticles (Ag NPs) in TMDC nanoscrolls. After the silver nitrate (AgNO3) solution was spin-coated on monolayer (1L) MoS2 and WS2 nanosheets grown by chemical vapor deposition, Ag NPs were homogeneously formed to obtain MoS2-Ag and WS2-Ag nanosheets due to the TMDC-assisted spontaneous reduction, and their size and density can be well controlled by tuning the concentration of the AgNO3 solution. By the simple placement of alkaline droplets on MoS2-Ag or WS2-Ag hybrid nanosheets, MoS2-Ag or WS2-Ag nanoscrolls with large sizes were obtained in large area. The obtained hybrid nanoscrolls exhibited up to 500 times increased photosensitivities compared with 1L MoS2 nanosheets, arising from the localized surface plasmon resonance effect of Ag NPs and the scrolled-nanosheet structure. Our work provides a reliable method for the facile and large-area preparation of NP/nanosheet hybrid nanoscrolls and demonstrates their great potential for high-performance optoelectronic devices.
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Affiliation(s)
- Qiuyan Yue
- Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Lin Wang
- Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Huacheng Fan
- Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Ying Zhao
- Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Cong Wei
- Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Chengjie Pei
- Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Qingsong Song
- Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Xiao Huang
- Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Hai Li
- Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
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15
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Zhao X, Sun P, Zhao K. The study of aggregation dynamics of conjugated polymer solutions in UV-vis absorbance spectra by considering the changing rate of average photon energy. Heliyon 2021; 7:e06638. [PMID: 33889772 PMCID: PMC8050370 DOI: 10.1016/j.heliyon.2021.e06638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 12/01/2020] [Accepted: 03/26/2021] [Indexed: 12/22/2022] Open
Abstract
The changing rate of average photon energy ('Eave) can describe the UV-vis absorbance spectra over a wavelength range. During the aggregation process of poly (3-hexylselenophene) (P3HS) and poly (3-hexylthiophene) (P3HT) solutions that form J-aggregates, 'Eave always decrease and the relationship between 'Eave and time is an exponential model. 'Eave can predict the time when the aggregation process is completed or how far the aggregation process is from the completion. Hansen Solubility Parameter (HSP) of the solvent can be used to predict 'Eave of some conjugated polymer solutions without doing experiments. ''E0ave (changing rate of 'Eave at the beginning of the aggregation process) has been calculated to reflect the overall changing trend of 'Eave and reflects the compatibility between solvent and solute. Therefore, 'Eave is suitable to describe the aggregation dynamics of conjugated polymer solutions by evaluating the aggregation process in UV-vis absorbance spectra.
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Affiliation(s)
- Xinyi Zhao
- Zhengzhou University, School of Chemical Engineering, 100 Science Avenue, Zhengzhou, Henan 450002, China
| | - Peiqin Sun
- Zhengzhou University, School of Chemical Engineering, 100 Science Avenue, Zhengzhou, Henan 450002, China
| | - Ke Zhao
- Zhengzhou University, School of Mechanics and Safety Engineering Science, 100 Science Avenue, Zhengzhou, Henan 450002, China
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16
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Tessema E, Elakkat V, Chiu CF, Tsai ZL, Chan KL, Shen CR, Su HC, Lu N. Recoverable Palladium-Catalyzed Carbon-Carbon Bond Forming Reactions under Thermomorphic Mode: Stille and Suzuki-Miyaura Reactions. Molecules 2021; 26:molecules26051414. [PMID: 33807812 PMCID: PMC7961810 DOI: 10.3390/molecules26051414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 11/30/2022] Open
Abstract
The reaction of [PdCl2(CH3CN)2] and bis-4,4′-(RfCH2OCH2)-2,2′-bpy (1a–d), where Rf = n-C11F23 (a), n-C10F21 (b), n-C9F19 (c) and n-C8F17 (d), respectively, in the presence of dichloromethane (CH2Cl2) resulted in the synthesis of Pd complex, [PdCl2[4,4′-bis-(RfCH2OCH2)-2,2′-bpy] (2a–d). The Pd-catalyzed Stille arylations of vinyl tributyltin with aryl halides were selected to demonstrate the feasibility of recycling usage with 2a as the catalyst using NMP (N-methyl-2-pyrrolidone) as the solvent at 120–150 °C. Additionally, recycling and electronic effect studies of 2a–c were also carried out for Suzuki-Miyaura reaction of phenylboronic acid derivatives, 4-X-C6H4-B(OH)2, (X = H or Ph) with aryl halide, 4-Y-C6H4-Z, (Y = CN, H or OCH3; Z = I or Br) in dimethylformamide (DMF) at 135–150 °C. At the end of each cycle, the product mixtures were cooled to lower temperature (e.g., −10 °C), and then catalysts were recovered by decantation with Pd leaching less than 1%. The products were quantified by gas chromatography/mass spectrometry (GC/MS) analysis or by the isolated yield. The complex 2a-catalyzed Stille reaction of aryl iodides with vinyl tributyltin have good recycling results for a total of 8 times, with a high yield within short period of time (1–3 h). Similarly, 2a–c-catalyzed Suzuki-Miyaura reactions also have good recycling results. The electronic effect studies from substituents in both Stille and Suzuki-Miyaura coupling reactions showed that electron withdrawing groups speed up the reaction rate. To our knowledge, this is the first example of recoverable fluorous long-chained Pd-catalyzed Stille reactions under the thermomorphic mode.
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Affiliation(s)
- Eskedar Tessema
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan; (E.T.); (V.E.); (Z.-L.T.); (K.L.C.)
| | - Vijayanath Elakkat
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan; (E.T.); (V.E.); (Z.-L.T.); (K.L.C.)
| | - Chiao-Fan Chiu
- Department of Pediatrics, Linkou Medical Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Correspondence: (C.-F.C.); (N.L.)
| | - Zong-Lin Tsai
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan; (E.T.); (V.E.); (Z.-L.T.); (K.L.C.)
| | - Ka Long Chan
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan; (E.T.); (V.E.); (Z.-L.T.); (K.L.C.)
| | - Chia-Rui Shen
- Department of Medical Biotechnology and Laboratory Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan;
- Department of Ophthalmology, Linkou Medical Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Han-Chang Su
- Creditable Service Technology Consultants, New Taipei City 235, Taiwan;
| | - Norman Lu
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan; (E.T.); (V.E.); (Z.-L.T.); (K.L.C.)
- Development Center for Smart Textile, National Taipei University of Technology, Taipei 106, Taiwan
- Correspondence: (C.-F.C.); (N.L.)
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17
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Huang CY, Wei EC, Yuan CT. Dual functional modes for nanostructured p-Cu 2O/n-Si heterojunction photodiodes. NANOTECHNOLOGY 2021; 32:075202. [PMID: 33108767 DOI: 10.1088/1361-6528/abc50d] [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
Many applications require a photodetector (PD) with multiple functional modes. This study demonstrates a dual functional PD with a simple structure that uses a nanostructured p-Cu2O/n-Si heterojunction. This device features a self-powering characteristic for an open-circuit voltage (V oc) of 0.5 V and exhibits an external quantum efficiency (EQE) of 3780% at a reverse bias of -5 V. There is a high EQE at low reverse-bias because trapped holes cause charge to be injected from the electrode. The nanostructured p-Cu2O/n-Si heterojunction also has a high response speed (<10 ms) in the self-powered mode because there is a built-in potential within p-n junction. This study shows that a nanostructured p-Cu2O/n-Si heterojunction acts as a self-powered PD for reducing power consumption and as a photomultiplication (PM)-type PD with high internal gain.
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Affiliation(s)
- Chun-Ying Huang
- Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, Nantou 54561, Taiwan
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18
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Wang Y, Wu H, Zhu W, Zhang X, Liu Z, Wu Y, Feng C, Dang Y, Dong H, Fu H, Hu W. Cocrystal Engineering: Toward Solution‐Processed Near‐Infrared 2D Organic Cocrystals for Broadband Photodetection. Angew Chem Int Ed Engl 2021; 60:6344-6350. [DOI: 10.1002/anie.202015326] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/15/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Yu Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Huang Wu
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Weigang Zhu
- Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Xiaotao Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Zheyuan Liu
- Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Yishi Wu
- Beijing Key Laboratory for Optical Materials and Photonic Devices Department of Chemistry Capital Normal University Beijing 100048 China
| | - Changfu Feng
- School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China
| | - Yanfeng Dang
- Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Huanli Dong
- Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Science (ICCAS) Beijing 100190 China
| | - Hongbing Fu
- Beijing Key Laboratory for Optical Materials and Photonic Devices Department of Chemistry Capital Normal University Beijing 100048 China
| | - Wenping Hu
- Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 China
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19
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Wang Y, Wu H, Zhu W, Zhang X, Liu Z, Wu Y, Feng C, Dang Y, Dong H, Fu H, Hu W. Cocrystal Engineering: Toward Solution‐Processed Near‐Infrared 2D Organic Cocrystals for Broadband Photodetection. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015326] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yu Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Huang Wu
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Weigang Zhu
- Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Xiaotao Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Zheyuan Liu
- Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Yishi Wu
- Beijing Key Laboratory for Optical Materials and Photonic Devices Department of Chemistry Capital Normal University Beijing 100048 China
| | - Changfu Feng
- School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China
| | - Yanfeng Dang
- Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
| | - Huanli Dong
- Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Science (ICCAS) Beijing 100190 China
| | - Hongbing Fu
- Beijing Key Laboratory for Optical Materials and Photonic Devices Department of Chemistry Capital Normal University Beijing 100048 China
| | - Wenping Hu
- Tianjin Key Laboratory of Molecular Optoelectronic Science Department of Chemistry School of Science Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 China
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20
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Poon JKL, Chen Z, Leung SYL, Leung MY, Yam VWW. Geometrical manipulation of complex supramolecular tessellations by hierarchical assembly of amphiphilic platinum(II) complexes. Proc Natl Acad Sci U S A 2021; 118:e2022829118. [PMID: 33542102 PMCID: PMC8017981 DOI: 10.1073/pnas.2022829118] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Here we report complex supramolecular tessellations achieved by the directed self-assembly of amphiphilic platinum(II) complexes. Despite the twofold symmetry, these geometrically simple molecules exhibit complicated structural hierarchy in a columnar manner. A possible key to such an order increase is the topological transition into circular trimers, which are noncovalently interlocked by metal···metal and π-π interactions, thereby allowing for cofacial stacking in a prismatic assembly. Another key to success is to use the immiscibility of the tailored hydrophobic and hydrophilic sidechains. Their phase separation leads to the formation of columnar crystalline nanostructures homogeneously oriented on the substrate, featuring an unusual geometry analogous to a rhombitrihexagonal Archimedean tiling. Furthermore, symmetry lowering of regular motifs by design results in an orthorhombic lattice obtained by the coassembly of two different platinum(II) amphiphiles. These findings illustrate the potentials of supramolecular engineering in creating complex self-assembled architectures of soft materials.
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Affiliation(s)
- Jason Koon-Lam Poon
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Zhen Chen
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Sammual Yu-Lut Leung
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Ming-Yi Leung
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong, People's Republic of China
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21
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Wang HP, Li S, Liu X, Shi Z, Fang X, He JH. Low-Dimensional Metal Halide Perovskite Photodetectors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2003309. [PMID: 33346383 DOI: 10.1002/adma.202003309] [Citation(s) in RCA: 157] [Impact Index Per Article: 52.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/21/2020] [Indexed: 05/24/2023]
Abstract
Metal halide perovskites (MHPs) have been a hot research topic due to their facile synthesis, excellent optical and optoelectronic properties, and record-breaking efficiency of corresponding optoelectronic devices. Nowadays, the development of miniaturized high-performance photodetectors (PDs) has been fueling the demand for novel photoactive materials, among which low-dimensional MHPs have attracted burgeoning research interest. In this report, the synthesis, properties, photodetection performance, and stability of low-dimensional MHPs, including 0D, 1D, 2D layered and nonlayered nanostructures, as well as their heterostructures are reviewed. Recent advances in the synthesis approaches of low-dimensional MHPs are summarized and the key concepts for understanding the optical and optoelectronic properties related to the PD applications of low-dimensional MHPs are introduced. More importantly, recent progress in novel PDs based on low-dimensional MHPs is presented, and strategies for improving the performance and stability of perovskite PDs are highlighted. By discussing recent advances, strategies, and existing challenges, this progress report provides perspectives on low-dimensional MHP-based PDs in the future.
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Affiliation(s)
- Hsin-Ping Wang
- Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
| | - Siyuan Li
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Xinya Liu
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Zhifeng Shi
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, P. R. China
| | - Xiaosheng Fang
- Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Jr-Hau He
- Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
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22
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Chiu CF, Ho JH, Tessema E, Lu Y, Shen CR, Lin CW, Lu N. Short-Chained Platinum Complex Catalyzed Hydrosilylation under Thermomorphic Conditions: Heterogeneous Phase Separation at Ice Temperature. Molecules 2021; 26:molecules26020378. [PMID: 33450888 PMCID: PMC7828357 DOI: 10.3390/molecules26020378] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/08/2021] [Accepted: 01/09/2021] [Indexed: 11/16/2022] Open
Abstract
Homogeneous catalysts PtCl2[5,5'-bis-(n-ClCF2(CF2)3CH2OCH2)-2,2'-bpy] (2A) and PtCl2[5,5'-bis-(n-HCF2(CF2)3CH2OCH2)-2,2'-bpy] (2B), which contained short fluorous chains, were synthesized and used in catalysis of hydrosilylation of alkynes. In these reactions the thermomorphic mode was effectively used to recover these catalysts from the reaction mixture up to eight cycles by taking advantage of heterogeneous phase separation at ice temperature. This kind of catalysis had previously been observed in fluorous catalysts of platinum containing about 50% F-content, but in this work the percentage of F-content is decreased to only about 30%, by which we termed them as "very light fluorous". Our new type of catalyst with limited number of F-content is considered as the important discovery in the fluorous technology field as the reduced number of fluorine atoms will help to be able to comply the EPA 8-carbon rule. The metal leaching after the reaction has been examined by ICP-MS, and the testing results show the leaching of residual metal to be minimal. Additionally, comparing these results to our previous work, fluorous chain assisted selectivity has been observed when different fluorous chain lengths of the catalysts are used. It has been found that there exists fluorous chain assisted better selectivity towards β-(E) form in the Pt-catalyzed hydrosilylation of non-symmetric terminal alkyne when the Pt catalyst contains short fluorous chain (i.e., 4 Cs). Phenyl acetylenes showed the opposite regioselectivity due to pi-pi interaction while using the same catalyst via Markovnikov's addition to form terminal vinyl silane, which is then a major product for Pt-catalyzed hydrosilylation of terminal aryl acetylene with triethylsilane. Finally, the kinetic studies indicate that the insertion of alkyne into the Pt-H bond is the rate-determining step.
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Affiliation(s)
- Chiao-Fan Chiu
- Department of Pediatrics, Linkou Medical Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan;
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Jinn-Hsuan Ho
- Department of Chemical Engineering, National Taiwan University of Technology, Taipei 106, Taiwan;
| | - Eskedar Tessema
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan; (E.T.); (Y.L.)
| | - Yijing Lu
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan; (E.T.); (Y.L.)
| | - Chia-Rui Shen
- Department of Medical Biotechnology and Laboratory Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan;
- Department of Ophthalmology, Linkou Medical Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chang-Wei Lin
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital & Chang Gung University, Taoyuan 333, Taiwan
- Correspondence: (C.-W.L.); (N.L.)
| | - Norman Lu
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan; (E.T.); (Y.L.)
- Development Center for Smart Textile, National Taipei University of Technology, Taipei 106, Taiwan
- Correspondence: (C.-W.L.); (N.L.)
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23
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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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Fu HC, Li W, Yang Y, Lin CH, Veyssal A, He JH, Jin S. An efficient and stable solar flow battery enabled by a single-junction GaAs photoelectrode. Nat Commun 2021; 12:156. [PMID: 33420060 PMCID: PMC7794367 DOI: 10.1038/s41467-020-20287-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 11/16/2020] [Indexed: 11/08/2022] Open
Abstract
Converting and storing solar energy and releasing it on demand by using solar flow batteries (SFBs) is a promising way to address the challenge of solar intermittency. Although high solar-to-output electricity efficiencies (SOEE) have been recently demonstrated in SFBs, the complex multi-junction photoelectrodes used are not desirable for practical applications. Here, we report an efficient and stable integrated SFB built with back-illuminated single-junction GaAs photoelectrode with an n-p-n sandwiched design. Rational potential matching simulation and operating condition optimization of this GaAs SFB lead to a record SOEE of 15.4% among single-junction SFB devices. Furthermore, the TiO2 protection layer and robust redox couples in neutral pH electrolyte enable the SFB to achieve stable cycling over 408 h (150 cycles). These results advance the utilization of more practical solar cells with higher photocurrent densities but lower photovoltages for high performance SFBs and pave the way for developing practical and efficient SFBs.
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Affiliation(s)
- Hui-Chun Fu
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53706, USA
- Division of Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Wenjie Li
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53706, USA
| | - Ying Yang
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53706, USA
- Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Chun-Ho Lin
- Division of Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Atilla Veyssal
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53706, USA
| | - Jr-Hau He
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong, China.
| | - Song Jin
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53706, USA.
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Liu DS, Wu J, Xu H, Wang Z. Emerging Light-Emitting Materials for Photonic Integration. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2003733. [PMID: 33306201 DOI: 10.1002/adma.202003733] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/26/2020] [Indexed: 06/12/2023]
Abstract
The arrival of the information explosion era is urging the development of large-bandwidth high-data-rate optical interconnection technology. Up to now, the biggest stumbling block in optical interconnections has been the lack of efficient light sources despite significant progress that has been made in germanium-on-silicon (Ge-on-Si) and III-V-on-silicon (III-V-on-Si) lasers. 2D materials and metal halide perovskites have attracted much attention in recent years, and exhibit distinctive advantages in the application of on-chip light emitters. Herein, this Progress Report reviews the recent progress made in light-emitting materials with a focus on new materials, i.e., 2D materials and metal halide perovskites. The report briefly introduces the current status of Ge-on-Si and III-V-on-Si lasers and discusses the advances of 2D and perovskite light-emitting materials for photonic integration, including their optical properties, preparation methods, as well as the light sources based on these materials. Finally, challenges and perspectives of these emerging materials on the way to the efficient light sources are discussed.
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Affiliation(s)
- De-Sheng Liu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China
| | - Jiang Wu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China
| | - Hongxing Xu
- School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Zhiming Wang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China
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26
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Li T, Xu X, Lin C, Guan X, Hsu W, Tsai M, Fang X, Wu T, He J. Highly UV Resistant Inch-Scale Hybrid Perovskite Quantum Dot Papers. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1902439. [PMID: 32995112 PMCID: PMC7507066 DOI: 10.1002/advs.201902439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 03/30/2020] [Accepted: 04/24/2020] [Indexed: 05/12/2023]
Abstract
Halide perovskite quantum dots (PQDs) are promising materials for diverse applications including displays, light-emitting diodes, and solar cells due to their intriguing properties such as tunable bandgap, high photoluminescence quantum yield, high absorbance, and narrow emission peaks. Despite the prosperous achievements over the past several years, PQDs face severe challenges in terms of stability under different circumstances. Currently, researchers have overcome part of the stability problem, making PQDs sustainable in water, oxygen, and polar solvents for long-term use. However, halide PQDs are easily degraded under continuous irradiation, which significantly limits their potential for conventional applications. In this study, an oleic acid/oleylamine (traditional surface ligands)-free method to fabricate perovskite quantum dot papers (PQDP) is developed by adding cellulose nanocrystals as long-chain binding ligands that stabilize the PQD structure. As a result, the relative photoluminescence intensity of PQDP remains over ≈90% under continuous ultraviolet (UV, 16 W) irradiation for 2 months, showing negligible photodegradation. This proposed method paves the way for the fabrication of ultrastable PQDs and the future development of related applications.
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Affiliation(s)
- Ting‐You Li
- Computer, Electrical, and Mathematical Sciences and Engineering (CEMSE) DivisionKing Abdullah University of Science and Technology (KAUST)Thuwal23955‐6900Saudi Arabia
| | - Xuezhu Xu
- Computer, Electrical, and Mathematical Sciences and Engineering (CEMSE) DivisionKing Abdullah University of Science and Technology (KAUST)Thuwal23955‐6900Saudi Arabia
| | - Chun‐Ho Lin
- Computer, Electrical, and Mathematical Sciences and Engineering (CEMSE) DivisionKing Abdullah University of Science and Technology (KAUST)Thuwal23955‐6900Saudi Arabia
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Xinwei Guan
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Wei‐Hao Hsu
- Institute of PhysicsAcademia SinicaNankangTaipei115Taiwan
| | - Meng‐Lin Tsai
- Computer, Electrical, and Mathematical Sciences and Engineering (CEMSE) DivisionKing Abdullah University of Science and Technology (KAUST)Thuwal23955‐6900Saudi Arabia
- Department of Materials Science and EngineeringNational Taiwan University of Science and TechnologyTaipei106Taiwan
| | - Xiaosheng Fang
- Department of Materials ScienceFudan UniversityShanghai200433P. R. China
| | - Tom Wu
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Jr‐Hau He
- Computer, Electrical, and Mathematical Sciences and Engineering (CEMSE) DivisionKing Abdullah University of Science and Technology (KAUST)Thuwal23955‐6900Saudi Arabia
- Department of Materials Science and EngineeringCity University of Hong KongHong Kong SAR999077China
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Flexible perylenediimide/GaN organic-inorganic hybrid system with exciting optical and interfacial properties. Sci Rep 2020; 10:10480. [PMID: 32591627 PMCID: PMC7319992 DOI: 10.1038/s41598-020-67531-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 05/26/2020] [Indexed: 11/21/2022] Open
Abstract
We report the band gap tuning and facilitated charge transport at perylenediimide (PDI)/GaN interface in organic–inorganic hybrid nanostructure system over flexible titanium (Ti) foil. Energy levels of the materials perfectly align and facilitate high efficiency charge transfer from electron rich n-GaN to electron deficient PDI molecules. Proper interface formation resulted in band gap tuning as well as facilitated electron transport as evident in I–V characteristics. Growth of PDI/GaN hybrid system with band gap tuning from ultra-violet to visible region and excellent electrical properties open up new paradigm for fabrication of efficient optoelectronics devices on flexible substrates.
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Liu J, Wen H, Shen L. Highly sensitive, broadband, fast response organic photodetectors based on semi-tandem structure. NANOTECHNOLOGY 2020; 31:214001. [PMID: 32050173 DOI: 10.1088/1361-6528/ab758e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Solution-processed organic photodetectors (OPDs) simultaneously integrating high sensitivity, ultrafast response and broadband detection have rarely been achieved so far. Herein, we demonstrate OPDs based on a semi-tandem structure with remarkable performance by solution-processability. The semi-tandem structure directly superimposes two active layers with complementary absorption spectra, achieving a broad spectral response of 300-1000 nm. It provides a detection covering from ultraviolet to near-infrared range, while the external quantum efficiency in the spectral range of 550-950 nm retains 70%. The high electron and hole injection barriers enable a dark current density as low as 6.51 × 10-5 mA cm-2 at -0.1 V, resulting in a noise current of 3.91 × 10-13 A Hz-1/2 at 70 Hz, which is nearly three times lower than single-junction photodetectors. Encouragingly, the device response speed is improved by suppressing the resistance-capacitance time constant of the device employing semi-tandem structure induced capacitance decreasing. The state-of-the-art OPDs contribute to the response time of 26.27 ns, which is the fastest one in OPDs to the best of our knowledge. We believe that the semi-tandem structures provide a new approach to achieving high-performance photodetectors integrating fast, sensitive and broadband response.
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Affiliation(s)
- Junshi Liu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China
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Wang L, Li Z, Li M, Li S, Lu Y, Qi N, Zhang J, Xie C, Wu C, Luo LB. Self-Powered Filterless Narrow-Band p-n Heterojunction Photodetector for Low Background Limited Near-Infrared Image Sensor Application. ACS APPLIED MATERIALS & INTERFACES 2020; 12:21845-21853. [PMID: 32319283 DOI: 10.1021/acsami.0c02827] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Photonic detection with narrow spectrum selectivity is very important to eliminate the signal from obtrusive light, which can improve the anti-interference ability of the infrared imaging system. While the self-driving effect inherent to the p-n junction is very attractive in optic-electronic integration, the application of the p-n junction in narrow-band photodetectors is limited by the usual broad absorption range. In this work, a self-powered filterless narrowband near-infrared photodetector based on CuGaTe2/silicon p-n junction was reported. The as-fabricated photodetector exhibited typical narrow-band response which shall be ascribed to the slightly smaller band gap of Si than CuGaTe2 and the restricted photocurrent generation region in the p-n heterojunction by optimizing CuGaTe2 thickness. It is observed that when the thickness of CuGaTe2 film is 143 nm, the device exhibits a response peak centered around 1050 nm with a full-width at half-maximum of ∼118 nm. Further device analysis reveals a specific detectivity of ∼1012 Jones and a responsivity of 114 mA/W under 1064 nm illumination at zero bias. It was also found that an image system based on the narrowband CuGaTe2/Si photodetector showed high noise immunity for its spectral selective characteristics.
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Affiliation(s)
- Li Wang
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, China
| | - Zhen Li
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, China
| | - Ming Li
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, China
| | - Shao Li
- State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, China
| | - Yingchun Lu
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, China
| | - Ning Qi
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, China
| | - Jian Zhang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Chao Xie
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, China
| | - Chunyan Wu
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, China
| | - Lin-Bao Luo
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, China
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