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Gao L, Li L, Li Y, He C, Zhou L, Qu X, Fang S. Effects of Europium Complex on Thermal and Photoluminescence Properties of Polyurethane-Europium Materials. Polymers (Basel) 2023; 15:polym15051064. [PMID: 36904305 PMCID: PMC10007129 DOI: 10.3390/polym15051064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/05/2023] [Accepted: 02/15/2023] [Indexed: 02/25/2023] Open
Abstract
A europium complex with double bonds was synthesized with crotonic acid as the ligand and a europium ion as the center ion. Then, the obtained europium complex was added to synthesized poly(urethane-acrylate) macromonomers to prepare the bonded polyurethane-europium materials by the polymerization of the double bonds in the complex and the poly(urethane-acrylate) macromonomers. The prepared polyurethane-europium materials had high transparency, good thermal stability and good fluorescence. The storage moduli of polyurethane-europium materials are obviously higher than those of pure polyurethane. Polyurethane-europium materials exhibit bright red light with good monochromaticity. The light transmittance of the material decreases slightly with increases in the europium complex content, but the luminescence intensity gradually increases. In particular, polyurethane-europium materials possess a long luminescence lifetime, which has potential applications for optical display instruments.
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Affiliation(s)
- Lijun Gao
- School of Chemical Engineering and Technology, Hebei University of Technology, No.8 Guangrong Road, Tianjin 300130, China
- Henan Provincial Key Laboratory of Surface & Interface Science, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
- Correspondence: (L.G.); (X.Q.); (S.F.)
| | - Liuyang Li
- Henan Provincial Key Laboratory of Surface & Interface Science, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Yunqiu Li
- Henan Provincial Key Laboratory of Surface & Interface Science, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Congcong He
- Henan Provincial Key Laboratory of Surface & Interface Science, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Liming Zhou
- Henan Provincial Key Laboratory of Surface & Interface Science, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Xiongwei Qu
- School of Chemical Engineering and Technology, Hebei University of Technology, No.8 Guangrong Road, Tianjin 300130, China
- Correspondence: (L.G.); (X.Q.); (S.F.)
| | - Shaoming Fang
- School of Chemical Engineering and Technology, Hebei University of Technology, No.8 Guangrong Road, Tianjin 300130, China
- Henan Provincial Key Laboratory of Surface & Interface Science, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
- Correspondence: (L.G.); (X.Q.); (S.F.)
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Li J, Zhu F, Lou K, Tian H, Luo Q, Dang Y, Liu X, Wang P, Wu L. Tumor microenvironment enhanced NIR II fluorescence imaging for tumor precise surgery navigation via tetrasulfide mesoporous silica-coated Nd-based rare-earth nanocrystals. Mater Today Bio 2022; 16:100397. [PMID: 36081578 PMCID: PMC9445393 DOI: 10.1016/j.mtbio.2022.100397] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/08/2022] [Accepted: 08/08/2022] [Indexed: 11/28/2022] Open
Abstract
In vivo fluorescent imaging by using the new contrast agents emitted at short-wavelength infrared region (NIR II, 1000–1700 nm) presents an unprecedent advantages in imaging sensitivity and spatial resolution over traditional near-infrared (NIR) light. Recently, Nd-based rare-earth nanocrystals have attracted considerable attention due to the high quantum yield (∼40%) of their emission at NIR II. However, undesirable capture by reticuloendothelial system to bring strong background signal is unsatisfying for tumor discrimination. Here, GSH-sensitive tetrasulfide bond incorporated mesoporous silica shell has entrusted onto Nd-based down-conversion nanocrystals (DCNPs) surface to totally quench the fluorescence of DCNPs. After RGD conjugation on the silica surface, the NIR II contrast agents could actively target to liver tumors. Then tetrasulfide bonds can be broken during the silica framework decomposing in cytoplasm under high GSH concentration to result in NIR II fluorescence explosive recover. Benefiting from this specific response under tumor microenvironment, the NIR II signal in other organs was markedly reduced, while the signal-to-background ratio is prominently enhanced in tumors. Then, solid liver tumors were successfully resected under the guidance of our GSH responsive NIR II fluorescent imaging with no recurrence after 20-day of surgery. Meanwhile, by combining with the ignorable side effects, the Nd-based nanoprobes vastly improved the imaging resolution of tumor margin, opening a paradigm of NIR II fluorescent imaging-guided surgery.
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Affiliation(s)
- Jiaqi Li
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China
| | - Fukai Zhu
- Collaborative Innovation Center of Mushroom Health Industry, Minnan Normal University, Zhangzhou, Fujian, 363000, PR China
| | - Kangliang Lou
- Cancer Center & Department of Breast and Thyroid Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China
| | - Haina Tian
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China
- Department of Biomaterials, College of Materials, Research Center of Biomedical Engineering of Xiamen & Key Laboratory of Biomedical Engineering of Fujian Province, Xiamen University, Xiamen, 361005, PR China
| | - Qiang Luo
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China
| | - Yongying Dang
- Cancer Center & Department of Breast and Thyroid Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China
| | - Xiaolong Liu
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China
- Corresponding authors. The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China.
| | - Peiyuan Wang
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China
- Corresponding author. The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou, 350025, PR China.
| | - Liming Wu
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, PR China
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang Provincial Key Laboratory of Pancreatic Disease, School of Medicine, Zhejiang University, Hangzhou, 310003, China
- Corresponding author. Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang Provincial Key Laboratory of Pancreatic Disease, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
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Anabestani H, Nabavi S, Bhadra S. Advances in Flexible Organic Photodetectors: Materials and Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3775. [PMID: 36364551 PMCID: PMC9655925 DOI: 10.3390/nano12213775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Future electronics will need to be mechanically flexible and stretchable in order to enable the development of lightweight and conformal applications. In contrast, photodetectors, an integral component of electronic devices, remain rigid, which prevents their integration into everyday life applications. In recent years, significant efforts have been made to overcome the limitations of conventional rigid photodetectors, particularly their low mechanical deformability. One of the most promising routes toward facilitating the fabrication of flexible photodetectors is to replace conventional optoelectronic materials with nanomaterials or organic materials that are intrinsically flexible. Compared with other functional materials, organic polymers and molecules have attracted more attention for photodetection applications due to their excellent photodetection performance, cost-effective solution-fabrication capability, flexible design, and adaptable manufacturing processes. This article comprehensively discusses recent advances in flexible organic photodetectors in terms of optoelectronic, mechanical properties, and hybridization with other material classes. Furthermore, flexible organic photodetector applications in health-monitoring sensors, X-ray detection, and imager devices have been surveyed.
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Verma A, Chaudhary P, Tripathi RK, Singh A, Yadav BC. State of the Art Metallopolymer Based Functional Nanomaterial for Photodetector and Solar Cell Application. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02301-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Zheng B, Fan J, Chen B, Qin X, Wang J, Wang F, Deng R, Liu X. Rare-Earth Doping in Nanostructured Inorganic Materials. Chem Rev 2022; 122:5519-5603. [PMID: 34989556 DOI: 10.1021/acs.chemrev.1c00644] [Citation(s) in RCA: 153] [Impact Index Per Article: 76.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Impurity doping is a promising method to impart new properties to various materials. Due to their unique optical, magnetic, and electrical properties, rare-earth ions have been extensively explored as active dopants in inorganic crystal lattices since the 18th century. Rare-earth doping can alter the crystallographic phase, morphology, and size, leading to tunable optical responses of doped nanomaterials. Moreover, rare-earth doping can control the ultimate electronic and catalytic performance of doped nanomaterials in a tunable and scalable manner, enabling significant improvements in energy harvesting and conversion. A better understanding of the critical role of rare-earth doping is a prerequisite for the development of an extensive repertoire of functional nanomaterials for practical applications. In this review, we highlight recent advances in rare-earth doping in inorganic nanomaterials and the associated applications in many fields. This review covers the key criteria for rare-earth doping, including basic electronic structures, lattice environments, and doping strategies, as well as fundamental design principles that enhance the electrical, optical, catalytic, and magnetic properties of the material. We also discuss future research directions and challenges in controlling rare-earth doping for new applications.
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Affiliation(s)
- Bingzhu Zheng
- State Key Laboratory of Silicon Materials, Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jingyue Fan
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Bing Chen
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR 999077, China
| | - Xian Qin
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Juan Wang
- Institute of Environmental Health, MOE Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Feng Wang
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR 999077, China
| | - Renren Deng
- State Key Laboratory of Silicon Materials, Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
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Xiang H, Chaudhary M, Tripon-Canseliet C, Chen Z. Colloidal upconversion nanocrystals enable low-temperature-grown GaAs photoconductive switch operating at λ = 1.55 μm. NANOTECHNOLOGY 2021; 32:45LT01. [PMID: 34330125 DOI: 10.1088/1361-6528/ac197c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Microwave photoconductive switches, allowing an optical control on the magnitude and phase of the microwave signals to be transmitted, are important components for many optoelectronic applications. In recent years, there are significant demands to develop photoconductive switches functional in the short-wave-infrared spectrum window (e.g.λ = 1.3-1.55μm) but most state-of-the-art semiconductors for photoconductive switches cannot achieve this goal. In this work, we propose a novel approach, by the use of solution-processed colloidal upconversion nanocrystals deposited directly onto low-temperature-grown gallium arsenide (LT-GaAs), to achieve microwave photoconductive switches functional atλ = 1.55μm illumination. Hybrid upconversion Er3+-doped NaYF4nanocrystal/LT-GaAs photoconductive switch was fabricated. Under a continuous waveλ = 1.55μm laser illumination (power density ∼ 12.9 mWμm-2), thanks to the upconversion energy transfer from the nanocrystals, a more than 2-fold larger value in decibel was measured for the ON/OFF ratio on the hybrid nanocrystal/LT-GaAs device by comparison to the control device without upconversion nanoparticles. A maximum ON/OFF ratio reaching 20.6 dB was measured on the nanocrystal/LT-GaAs hybrid device at an input signal frequency of 20 MHz.
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Affiliation(s)
- Hengyang Xiang
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS UMR 8213, 10 Rue Vauquelin, F-75005 Paris, France
| | - Mahima Chaudhary
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS UMR 8213, 10 Rue Vauquelin, F-75005 Paris, France
| | - Charlotte Tripon-Canseliet
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS UMR 8213, 10 Rue Vauquelin, F-75005 Paris, France
| | - Zhuoying Chen
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS UMR 8213, 10 Rue Vauquelin, F-75005 Paris, France
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Xiang H, Zhou L, Lin HJ, Hu Z, Zhao N, Chen Z. Upconversion nanoparticles extending the spectral sensitivity of silicon photodetectors to λ = 1.5 μm. NANOTECHNOLOGY 2020; 31:495201. [PMID: 32990270 DOI: 10.1088/1361-6528/abb2c4] [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 telecommunication wavelength of λ = 1.5 μm has been playing an important role in various fields. In particular, performing photodetection at this wavelength is challenging, demanding more performance stability and lower manufacturing cost. In this work, upconversion nanoparticle (UCNP)/Si hybrid photodetectors (hybrid PDs) are presented, made by integrating solution-processed Er3+-doped NaYF4 upconversion nanoparticles (UCNPs) onto a silicon photodetector. After optimization, we demonstrated that a layer of UCNPs can well lead to an effective spectral sensitivity extension without sacrificing the photodetection performance of the Si photodetector in the visible and near-infrared (near-IR) spectrum. Under λ = 1.5 μm illumination, the hybrid UCNPs/Si-PD exhibits a room-temperature detectivity of 6.15 × 1012 Jones and a response speed of 0.4 ms. These UCNPs/Si-PDs represent a promising hybrid strategy in the quest for low-cost and broadband photodetection that is sensitive in the spectrum from visible light down to the short-wave infrared.
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Affiliation(s)
- Hengyang Xiang
- MIIT Key Laboratory of Advanced Display Materials and Devices, Institute of Optoelectronics and Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS, 10 Rue Vauquelin, F-75005 Paris, France
| | - Lei Zhou
- Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huai×3an 223003, People's Republic of China
| | - Hung-Ju Lin
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS, 10 Rue Vauquelin, F-75005 Paris, France
| | - Zhelu Hu
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS, 10 Rue Vauquelin, F-75005 Paris, France
| | - Ni Zhao
- Department of Electronic Engineering, The Chinese University of Hong Kong, New Territories, Hong Kong SAR, People's Republic of China
| | - Zhuoying Chen
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS, 10 Rue Vauquelin, F-75005 Paris, France
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John JW, Dhyani V, Maity S, Mukherjee S, Ray SK, Kumar V, Das S. Broadband infrared photodetector based on nanostructured MoSe 2-Si heterojunction extended up to 2.5 μm spectral range. NANOTECHNOLOGY 2020; 31:455208. [PMID: 32442984 DOI: 10.1088/1361-6528/ab95b9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Transition metal dichalcogenides (TMDs) and their heterojunctions are drawing immense research interest for various applications including infrared detection. They are being studied with different semiconductor materials to explore their heterojunction properties. In this regard, we report a MoSe2/Si heterojunction broadband photodiode which is highly sensitive for a wide spectral range from 405 nm to 2500 nm wavelength with the maximum responsivity of ∼522 mA W-1 for 1100 nm of incident light. The hydrothermal synthesis approach leads to the imperfect growth of the MoSe2, creating defects in the lattice, which was confirmed by x-ray photo-spectroscopy. These sub-bandgap defects caused high optical absorption of the SWIR light as observed in the absorption spectra. The speed of the device ranges to 18/10 μs for 10 kHz modulated light. Furthermore, the photodetector has been fully operational even at zero bias voltage, making it a potential contender for self-powered photodetection.
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Affiliation(s)
- John Wellington John
- Centre for Applied Research in Electronics, Indian Institute of Technology Delhi, New Delhi 110016, India
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Xiao Y, Kuang X, Yeung Y, Ju M. Investigation of the Structure and Luminescence Mechanism of Tm3+-Doped LiYF4: New Theoretical Perspectives. Inorg Chem 2019; 59:1211-1217. [DOI: 10.1021/acs.inorgchem.9b02935] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yang Xiao
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Xiaoyu Kuang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Yauyuen Yeung
- Department of Science and Environmental Studies, The Education University of Hong Kong, 10 Lo Ping Road, Tai Po, New Territories, Hong Kong, China
| | - Meng Ju
- School of Physical Science and Technology, Southwest University, Chongqing 400715, China
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Xiang H, Hu Z, Billot L, Aigouy L, Zhang W, McCulloch I, Chen Z. Heavy-Metal-Free Flexible Hybrid Polymer-Nanocrystal Photodetectors Sensitive to 1.5 μm Wavelength. ACS APPLIED MATERIALS & INTERFACES 2019; 11:42571-42579. [PMID: 31625382 DOI: 10.1021/acsami.9b14034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Photodetection in the short-wave infrared (SWIR) wavelength window represents one of the core technologies allowing for many applications. Most current photodetectors suffer from high cost due to the epitaxial growth requirements and the ecological issue due to the use of highly toxic heavy-metal elements. Toward alternative SWIR photodetection strategies, in this work, high-performance heavy-metal-free flexible photodetectors sensitive to λ = 1.5 μm photons are presented based on the formation of a solution-processed hybrid composed of a conjugated diketopyrrolopyrrole-base polymer/PC70BM bulk heterojunction organic host together with inorganic guest NaYF4:15%Er3+ upconversion nanoparticles (UCNPs). Under the illumination of λ = 1.5 μm SWIR photons, optimized hybrid bulk-heterojunction (BHJ)/UCNP photodetectors exhibit a photoresponsivity of 0.73 and 0.44 mA/W, respectively, for devices built on rigid indium tin oxide (ITO)/glass and flexible ITO/polyethylene terephthalate substrates. These hybrid photodetectors are capable of performing SWIR photodetection with a fast operation speed, characterized by a short photocurrent rise time down to 80 μs, together with an excellent mechanical robustness for flexible applications. Exhibiting simultaneously multiple advantages including solution-processability, flexibility, and the absence of toxic heavy metal elements together with a fast operation speed and good photoresponsivity, these hybrid BHJ(DPPTT-T/PC70BM)/UCNP photodetectors are promising candidates for next-generation low-cost and high-performance SWIR photodetectors.
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Affiliation(s)
- Hengyang Xiang
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS , 10 Rue Vauquelin , Paris F-75005 , France
| | - Zhelu Hu
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS , 10 Rue Vauquelin , Paris F-75005 , France
| | - Laurent Billot
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS , 10 Rue Vauquelin , Paris F-75005 , France
| | - Lionel Aigouy
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS , 10 Rue Vauquelin , Paris F-75005 , France
| | - Weimin Zhang
- Solar and Photovoltaic Engineering Research Center , King Abdullah University of Science and Technology , Thuwal 23955-6900 , Saudi Arabia
| | - Iain McCulloch
- Solar and Photovoltaic Engineering Research Center , King Abdullah University of Science and Technology , Thuwal 23955-6900 , Saudi Arabia
- Centre for Plastic Electronics, Department of Chemistry , Imperial College London , London SW7 2AZ , U.K
| | - Zhuoying Chen
- LPEM, ESPCI Paris, PSL Research University, Sorbonne Université, CNRS , 10 Rue Vauquelin , Paris F-75005 , France
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Ju M, Xiao Y, Zhong M, Sun W, Xia X, Yeung YY, Lu C. New Theoretical Insights into the Crystal-Field Splitting and Transition Mechanism for Nd 3+-Doped Y 3Al 5O 12. ACS APPLIED MATERIALS & INTERFACES 2019; 11:10745-10750. [PMID: 30789696 DOI: 10.1021/acsami.9b00973] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
There has been considerable research interest paid to rare-earth transition-metal-doped Y3Al5O12, which has great potential for application as a laser crystal of new-type laser devices because of its unique optoelectronic and photophysical properties. Here, we present new research conducted on the structural evolution and crystal-field characteristics of a rare-earth Nd-doped Y3Al5O12 laser crystal by using the CALYPSO structure search method and our newly developed WEPMD method. A novel cage-like structure with a Nd3+ concentration of 4.16% is uncovered, which belongs to the standardized C222 space group. Our results indicate that the impurity Nd3+ ions are likely to substitute the Y3+ at the central site of the host Y3Al5O12 crystal lattice. The laser emission 4F3/2 → 4I11/2 occurring at 1077 nm is in accord with that of the experimental data. By introducing the proper correlation crystal field, three transitions, 4G5/2 → 4I9/2, 4F7/2 → 4I9/2, and 4S3/2 → 4I9/2, are predicted to be good candidates for laser action. These findings can provide powerful guidelines for further experiments of rare-earth-metal-doped laser crystals.
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Affiliation(s)
- Meng Ju
- School of Physical Science and Technology , Southwest University , Chongqing 400715 , China
| | - Yang Xiao
- Department of Physics , Nanyang Normal University , Nanyang 473061 , China
- Institute of Atomic and Molecular Physics , Sichuan University , Chengdu 610065 , China
| | - MingMin Zhong
- School of Physical Science and Technology , Southwest University , Chongqing 400715 , China
| | - Weiguo Sun
- Institute of Atomic and Molecular Physics , Sichuan University , Chengdu 610065 , China
| | - Xinxin Xia
- Institute of Atomic and Molecular Physics , Sichuan University , Chengdu 610065 , China
| | - Yau-Yuen Yeung
- Department of Science and Environmental Studies , The Education University of Hong Kong , Tai Po, New Territories, Hong Kong , China
| | - Cheng Lu
- Department of Physics , Nanyang Normal University , Nanyang 473061 , China
- School of Science , Northwestern Polytechnic University , Xi'an 710072 , China
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