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Liu M, Fan Q, Yang K, Zhao Z, Zhao X, Zhou Z, Zhang J, Lin F, Jen AKY, Zhang F. Broadband photomultiplication-type polymer photodetectors and its application in light-controlled circuit. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1296-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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2
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Paixão DB, Soares EGO, Salles HD, Silva CDG, Rampon DS, Schneider PH. Rongalite in PEG-400 as a general and reusable system for the synthesis of 2,5-disubstituted chalcogenophenes. Org Chem Front 2022. [DOI: 10.1039/d2qo01069k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Herein we report the use of rongalite in PEG-400 as a general, efficient, and environmentally benign reductive system for the synthesis of a wide range of 2,5-disubstituted chalcogenophenes from elemental sulfur, selenium and tellurium.
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Affiliation(s)
- Douglas B. Paixão
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Eduardo G. O. Soares
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Helena D. Salles
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Caren D. G. Silva
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Daniel S. Rampon
- Laboratório de Polímeros e Catálise (LAPOCA), Departamento de Química, Universidade Federal do Paraná (UFPR), P.O. Box 19061, 81531-990, Curitiba, PR, Brazil
| | - Paulo H. Schneider
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
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3
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Guo D, Yang L, Zhao J, Li J, He G, Yang D, Wang L, Vadim A, Ma D. Visible-blind ultraviolet narrowband photomultiplication-type organic photodetector with an ultrahigh external quantum efficiency of over 1 000 000. MATERIALS HORIZONS 2021; 8:2293-2302. [PMID: 34846433 DOI: 10.1039/d1mh00776a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A visible-blind ultraviolet (UV) photodetector can detect UV signals and is not interfered with by visible light or infrared light in the environment. In order to realize high-performance visible-blind UV organic photodetectors (OPDs), we design photomultiplication-type (PM-type) OPDs by using a novel strategy. Firstly, wide bandgap organic semiconductor materials, which do not absorb visible light, are selected as donors to absorb UV light. Secondly, a very small amount of C60 is used as an acceptor to trap photogenerated electrons. These accumulating electrons near the Al electrode form a potential, which leads to band bending and narrowing of the interface barrier, thereby assisting hole-tunneling injection to form a multiplication. The fabricated visible-blind UV PM-type OPDs with donor/acceptor doping ratio of 50 : 1 exhibit a narrowband response with full-width at half-maximum (FWHM) of approximately 36 nm, an ultrahigh external quantum efficiency of 1.08 × 106% and a remarkable specific detectivity of 1.28 × 1014 jones at 335 nm wavelength under -14 V bias. The UV-to-visible rejection ratio exceeds 103 by adjusting the donor/acceptor mixing ratios. The devices made with other wide bandgap organic materials also showed similar performance, indicating that this device structure provides an effective method for the preparation of high-performance visible-blind UV PM-type OPDs. In addition, we prepared a flexible visible-blind UV PM-type OPD based on a PET substrate and integrated it with a flexible OLED to fabricate a wearable UV monitor, which can visually detect the intensity of UV light.
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Affiliation(s)
- Dechao Guo
- Center for Aggregation-Induced Emission, Institute of Polymer Optoelectronic Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, People's Republic of China.
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4
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Bhosale SV, Al Kobaisi M, Jadhav RW, Morajkar PP, Jones LA, George S. Naphthalene diimides: perspectives and promise. Chem Soc Rev 2021; 50:9845-9998. [PMID: 34308940 DOI: 10.1039/d0cs00239a] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this review, we describe the developments in the field of naphthalene diimides (NDIs) from 2016 to the presentday. NDIs are shown to be an increasingly interesting class of molecules due to their electronic properties, large electron deficient aromatic cores and tendency to self-assemble into functional structures. Almost all NDIs possess high electron affinity, good charge carrier mobility, and excellent thermal and oxidative stability, making them promising candidates for applications in organic electronics, photovoltaic devices, and flexible displays. NDIs have also been extensively studied due to their potential real-world uses across a wide variety of applications including supramolecular chemistry, sensing, host-guest complexes for molecular switching devices, such as catenanes and rotaxanes, ion-channels, catalysis, and medicine and as non-fullerene accepters in solar cells. In recent years, NDI research with respect to supramolecular assemblies and mechanoluminescent properties has also gained considerable traction. Thus, this review will assist a wide range of readers and researchers including chemists, physicists, biologists, medicinal chemists and materials scientists in understanding the scope for development and applicability of NDI dyes in their respective fields through a discussion of the main properties of NDI derivatives and of the status of emerging applications.
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Affiliation(s)
- Sheshanath V Bhosale
- School of Chemical Sciences, Goa University, Taleigao Plateau, Goa-403 206, India.
| | - Mohammad Al Kobaisi
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia
| | - Ratan W Jadhav
- School of Chemical Sciences, Goa University, Taleigao Plateau, Goa-403 206, India.
| | - Pranay P Morajkar
- School of Chemical Sciences, Goa University, Taleigao Plateau, Goa-403 206, India.
| | - Lathe A Jones
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia
| | - Subi George
- New Chemistry Unit (NCU), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur PO, Bangalore-560064, India
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5
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Lv L, Dang W, Wu X, Chen H, Wang T, Qin L, Wei Z, Zhang K, Shen G, Huang H. Flexible Short-Wave Infrared Image Sensors Enabled by High-Performance Polymeric Photodetectors. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01988] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Lei Lv
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Wei Dang
- Hebei Key Laboratory of Optic-Electronic Information and Materials, the College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Xiaoxi Wu
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Hao Chen
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Tao Wang
- Hebei Key Laboratory of Optic-Electronic Information and Materials, the College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Linqing Qin
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zhixiang Wei
- National Center for Nanoscience and Technology, Beijing 100190, China
| | - Kai Zhang
- Hebei Key Laboratory of Optic-Electronic Information and Materials, the College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Guozhen Shen
- State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
| | - Hui Huang
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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6
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Han T, Liu Q, Guo Y, Jin G, Ding S, Yao M, Jiang C, Wang H, Huang X, Chang F. Phase Control Behavior of Lateral Polymer Photodetectors Using Strong Aggregation Bulk Heterojunction Film. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.201900474] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tao Han
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
- Fujian Provincial Key Laboratory of Advanced Materials Processing and ApplicationFujian University of Technology Fuzhou 350118 P. R. China
- Hunan Provincial Key Laboratory of Xiangnan Rare‐Precious Metals Compounds Research and Application Chenzhou 423000 P. R. China
| | - Qiao Liu
- School of Chemistry and EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Yanxi Guo
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Gui Jin
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Shufang Ding
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Min Yao
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Chunzhi Jiang
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Huanyou Wang
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
- Hunan Provincial Key Laboratory of Xiangnan Rare‐Precious Metals Compounds Research and Application Chenzhou 423000 P. R. China
| | - Xiaoyi Huang
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Fa Chang
- Fujian Provincial Key Laboratory of Advanced Materials Processing and ApplicationFujian University of Technology Fuzhou 350118 P. R. China
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7
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Wei Y, Feng G, Mao P, Luan Y, Zhuang J, Chen N, Yang H, Li W, Yang S, Wang J. Lateral Photodetectors Based on Double-Cable Polymer/Two-Dimensional Perovskite Heterojunction. ACS APPLIED MATERIALS & INTERFACES 2020; 12:8826-8834. [PMID: 31984740 DOI: 10.1021/acsami.9b19467] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Double-cable conjugated polymers and two-dimensional (2D) perovskites are both promising materials for next-generation photodetectors (PDs) due to their solution processibility and tunable optoelectronic properties. In this work, a lateral PD is designed by layering a double-cable conjugated polymer film atop a 2D Ruddlesden-Popper perovskite film. Compared to the corresponding single-layer polymer and perovskite PDs, the heterojunction device exhibits greatly improved performance with a high responsivity of 27.06 A W-1, an on/off ratio of 1379, and a short rise/decay time of 3.53/3.78 ms. In addition, a flexible device using polyimide as the substrate is successfully fabricated and exhibits comparable performance with the device on glass. This work demonstrates the great potential of double-cable polymer/2D perovskite heterojunctions in future flexible optoelectronics.
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Affiliation(s)
- Yuanzhi Wei
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Guitao Feng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Peng Mao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yigang Luan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Jing Zhuang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Ningli Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Haixia Yang
- Laboratory of Advanced Polymer Materials , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
| | - Weiwei Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Shiyong Yang
- Laboratory of Advanced Polymer Materials , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
| | - Jizheng Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
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8
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Rivard E. Metallacycle Transfer and its Link to Light-Emitting Materials and Conjugated Polymers. CHEM REC 2019; 20:640-648. [PMID: 31833670 DOI: 10.1002/tcr.201900095] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/26/2019] [Indexed: 02/05/2023]
Abstract
Major advances in optoelectronic technologies (e. g., solar cells, organic light-emitting diodes, etc…) are prefaced by the discovery of new synthetic methodologies. In this review, the key role of the Fagan-Nugent reaction in enabling our team (and others) to gain access to new building blocks for luminescent materials and conjugated polymers bearing p-block elements will be described. The Fagan-Nugent reaction is extremely powerful as a synthetic tool since the efficient zirconium-element atom exchange involved affords a wide range of unsaturated inorganic heterocycles of controllable composition and function.
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Affiliation(s)
- Eric Rivard
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta, T6G 2G2, Canada
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9
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Wu X, Lv L, Hu L, Shi Q, Peng A, Huang H. The Synthesis and Optoelectronic Applications for Tellurophene-Based Small Molecules and Polymers. Chemphyschem 2019; 20:2600-2607. [PMID: 31179624 DOI: 10.1002/cphc.201900386] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/24/2019] [Indexed: 12/25/2022]
Abstract
Tellurophene-based small molecules and polymers have received great attentions owing to their applications in thin-film transistors, solar cells, and sensors. This article reviews the current progress of the synthesis and applications of tellurophene-based small molecules and polymers. The physicochemical properties and optoelectronic applications of tellurophene-based materials are summarized and discussed. In the end, the challenges and outlook of tellurophene-based materials are presented.
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Affiliation(s)
- Xiaoxi Wu
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.,Department of Chemical and Biochemical Engineering, Technical University of Denmark, Building 229, 2800 Kgs. Lyngby. Sino-Danish College, University of Chinese Academy of Sciences, Beijing, 100049, China.Sino-Danish center for Education and Research, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lei Lv
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Lifang Hu
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qinqin Shi
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Aidong Peng
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hui Huang
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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10
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Zhong Z, Li K, Zhang J, Ying L, Xie R, Yu G, Huang F, Cao Y. High-Performance All-Polymer Photodetectors via a Thick Photoactive Layer Strategy. ACS APPLIED MATERIALS & INTERFACES 2019; 11:14208-14214. [PMID: 30908001 DOI: 10.1021/acsami.9b02092] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
To achieve high detectivity in all-polymer photodetectors (all-PPDs), a thick-film photoactive layer is favored because it can effectively suppress the dark current density. However, if the photoactive layer of the film is too thick, it leads to reduced responsivity owing to increased recombination loss. We developed high-performance all-PPDs by using a narrowband-gap p-type polymer NT40 and an n-type polymer poly{[ N, N'-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]- alt-5,5'-(2,2'bithiophene)} as the photoactive layer. The high charge carrier mobility of both copolymers enabled a photoactive layer thickness of 300 nm, leading to an ultralow dark current density of 4.85 × 10-10 A cm-2, a detectivity of 2.61 × 1013 Jones, a high responsivity of 0.33 A W-1 at 720 nm, and a bias of -0.1 V. The detectivity achieved >1013 Jones in a wide range from 360 to 850 nm, which is among the highest values so far reported for all-PPDs without extra gains. More importantly, the resultant all-PPDs exhibited a high working frequency over 10 kHz associated with a large linear dynamic range. These findings demonstrate great potential for practical applications of the all-PPDs developed in this work.
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Affiliation(s)
- Zhiming Zhong
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
- South China Institute of Collaborative Innovation , Dongguan 523808 , China
| | - Kang Li
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
| | - Jiaxin Zhang
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
| | - Lei Ying
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
- South China Institute of Collaborative Innovation , Dongguan 523808 , China
| | - Ruihao Xie
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
- South China Institute of Collaborative Innovation , Dongguan 523808 , China
| | - Gang Yu
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
| | - Fei Huang
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
- South China Institute of Collaborative Innovation , Dongguan 523808 , China
| | - Yong Cao
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China
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11
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Wang L, Wang W, Wang Q, Chi X, Kang Z, Zhou Q, Pan L, Zhang H, Wang Y. Study on photoelectric characteristics of monolayer WS2 films. RSC Adv 2019; 9:37195-37200. [PMID: 35542289 PMCID: PMC9075536 DOI: 10.1039/c9ra07924f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/28/2019] [Accepted: 10/21/2019] [Indexed: 01/29/2023] Open
Abstract
It is important to determine the time-dependent evolution of the excited monolayer WS2, which will provide a basis for the reasonable design of optoelectronic devices based on two-dimensional transition metal dichalcogenides. Here, we made a simple and large-area photodetector based on the monolayer WS2, with high light sensitivity and fast response, benefiting from the special dynamics of carrier involving the exciton, trion, and charge. Moreover, we tested the relaxation behavior of the excited monolayer WS2 by employing transient absorption (TA). It was found that the multi-body interaction among exciton would occur after the density of pump photon increases to 3.45 × 1014 photons per cm2. The exciton dissociation accompanying the generation of trion would appear in the photo-induced relaxation process, which would be a benefit for the operation of this photodetector. Increasing the energy of the exciton is good for the generation of carrier by comparing the relaxation behavior of WS2 excited to A and B exciton states. However, the bound exciton relaxation, originating from the capture process of the defect state, would exist and play an unfavorable role during the functioning of devices. It is important to determine the time-dependent evolution of the excited monolayer WS2, which will provide a basis for the reasonable design of optoelectronic devices based on two-dimensional transition metal dichalcogenides.![]()
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Affiliation(s)
- Lin Wang
- Femtosecond Laser Laboratory
- Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education)
- College of Physics
- Jilin University
- Changchun 130012
| | - Wenyan Wang
- Femtosecond Laser Laboratory
- Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education)
- College of Physics
- Jilin University
- Changchun 130012
| | - Quan Wang
- Femtosecond Laser Laboratory
- Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education)
- College of Physics
- Jilin University
- Changchun 130012
| | - Xiaochun Chi
- Femtosecond Laser Laboratory
- Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education)
- College of Physics
- Jilin University
- Changchun 130012
| | - Zhihui Kang
- Femtosecond Laser Laboratory
- Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education)
- College of Physics
- Jilin University
- Changchun 130012
| | - Qiang Zhou
- State Key Laboratory of Superhard Materials
- College of Physics
- Jilin University
- Changchun 130012
- P. R. China
| | - Lingyun Pan
- Femtosecond Laser Laboratory
- Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education)
- College of Physics
- Jilin University
- Changchun 130012
| | - Hanzhuang Zhang
- Femtosecond Laser Laboratory
- Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education)
- College of Physics
- Jilin University
- Changchun 130012
| | - Yinghui Wang
- Femtosecond Laser Laboratory
- Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education)
- College of Physics
- Jilin University
- Changchun 130012
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12
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Hoover GC, Ham J, Tang C, Carrera EI, Seferos DS. Synthesis and self-assembly of thiol-modified tellurophenes. CAN J CHEM 2018. [DOI: 10.1139/cjc-2018-0077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
An asymmetric thiol-modified tellurophene was designed and synthesized, and the ability of the compound to form a monolayer on a gold electrode was confirmed. The surface-active tellurophene was synthesized using Cadiot–Chodkiewicz coupling followed by ring closing and thiol modification. The tellurophene compound forms a monolayer on gold surfaces from a concentrated solution within 24 h. The ability of the compound to conjugate to gold is confirmed by X-ray photoelectron spectroscopy (XPS). A surface blocking experiment was used to evaluate the extent of formation of a monolayer on a gold electrode.
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Affiliation(s)
- Gabrielle C. Hoover
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
| | - Jennifer Ham
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
| | - Connie Tang
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
| | - Elisa I. Carrera
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
| | - Dwight S. Seferos
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
- Department of Chemistry, University of Toronto, Toronto, ON M5S 3H6, Canada
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