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Zhang H, Wei D, Song X, Xu Z, Wang F, Li H, Sun W, Dai Z, Ren Y, Ye Y, Ren X, Yao J. High responsivity of VIS-NIR photodetector based on Ag 2S/P3HT heterojunction. NANOTECHNOLOGY 2023; 34:185205. [PMID: 36724502 DOI: 10.1088/1361-6528/acb7f8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Ag2S quantum dot (QD) photodetectors (PDs) have attracted a lot of attention in the field of imaging system and optical communication. However, the current Ag2S PDs mainly works in the near-infrared band, and its detection ability in the visible band remains to be strengthened. In this paper, we used poly(3-hexylthiophene) (P3HT) with high carrier mobility and Ag2S QDs to construct heterojunction PD. Stronger absorption in blends with polymer P3HT compared to single Ag2S QDs. The optical absorption spectra show that the Ag2S/P3HT has strong light absorption peak at 394 and 598 nm. The results show that P3HT significantly enhances the absorption of Ag2S QDs from the visible to near-infrared band. The output characteristics, transfer characteristics and fast switching capability of the device at 405 nm, 532 nm and 808 nm were tested. The device has the responsivity of 6.05 A W-1, 83.72 A W-1and 37.31 A W-1under 405 nm, 532 nm and 808 nm laser irradiation. This work plays an important role in improving the detection performance of Ag2S QDs and broadening its applications in photoelectric devices for weak light and wide spectrum detection.
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Affiliation(s)
- Haiting Zhang
- School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Dongdong Wei
- School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Xiaoxian Song
- School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
- Institute of Micro-nano Optoelectronics and Terahertz Technology, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
- Center of Intelligent Opto-electric Sensors, Tianjin Jinhang Technical Physics Institute, Tianjin, 300308, People's Republic of China
| | - Ze Xu
- School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Fuguo Wang
- School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Hongwen Li
- School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Wenbao Sun
- Center of Intelligent Opto-electric Sensors, Tianjin Jinhang Technical Physics Institute, Tianjin, 300308, People's Republic of China
| | - Zijie Dai
- School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Yunpeng Ren
- School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Yunxia Ye
- School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Xudong Ren
- School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Jianquan Yao
- School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
- Institute of Micro-nano Optoelectronics and Terahertz Technology, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
- School of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, People's Republic of China
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Dong M, Lv Y, Peng X, Zhao S. Investigation of photoelectric behaviors of silver sulfide particles in different surroundings. RSC Adv 2022; 12:1028-1034. [PMID: 35425132 PMCID: PMC8978871 DOI: 10.1039/d1ra07864j] [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: 10/25/2021] [Accepted: 12/22/2021] [Indexed: 12/28/2022] Open
Abstract
Photocurrent of Ag2S particles decreases in alcohol gases or with CuPc coating and increases in CS2. This interesting phenomenon is explained through a model of gas adsorption.
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Affiliation(s)
- Mengmeng Dong
- College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, P. R. China
| | - Yanfei Lv
- College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, P. R. China
| | - Xue Peng
- College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, P. R. China
| | - Shichao Zhao
- College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, P. R. China
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