Electronic global-shutter one-thin-film-transistor active pixel sensor array with a pixel pitch of 50 μm and photoconductive gain greater than 100 for large-area dynamic imaging
In large-area dynamic imaging, an active pixel sensor (APS) is proposed. However, there is a trade-off between signal-to-noise ratio (SNR) and spatial resolution. To resolve this, a 256 × 256 active pixel image sensor array based on a 3-D dual-gate photosensitive thin-film transistor (TFT) is presen...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-09-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2022.1000909/full |
| _version_ | 1798003308129943552 |
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| author | Yunfeng Hu Yangbing Xu Jinming Liu Yihong Qi Kai Wang |
| author_facet | Yunfeng Hu Yangbing Xu Jinming Liu Yihong Qi Kai Wang |
| author_sort | Yunfeng Hu |
| collection | DOAJ |
| description | In large-area dynamic imaging, an active pixel sensor (APS) is proposed. However, there is a trade-off between signal-to-noise ratio (SNR) and spatial resolution. To resolve this, a 256 × 256 active pixel image sensor array based on a 3-D dual-gate photosensitive thin-film transistor (TFT) is presented in this work, with a pixel pitch of 50 μm, pixel fill factor of 63%, photoconductive gain of 102–104 and spatial resolution of 505 ppi. An electronic global shutter is enabled by dual-gate biasing without additional a shutter TFT. Such an array is capable of dynamic imaging at a frame rate of 34 Hz. |
| first_indexed | 2024-04-11T12:05:40Z |
| format | Article |
| id | doaj.art-bfd54aad6ed34b04a0c6867d2b2c24d5 |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-04-11T12:05:40Z |
| publishDate | 2022-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-bfd54aad6ed34b04a0c6867d2b2c24d52022-12-22T04:24:44ZengFrontiers Media S.A.Frontiers in Physics2296-424X2022-09-011010.3389/fphy.2022.10009091000909Electronic global-shutter one-thin-film-transistor active pixel sensor array with a pixel pitch of 50 μm and photoconductive gain greater than 100 for large-area dynamic imagingYunfeng Hu0Yangbing Xu1Jinming Liu2Yihong Qi3Kai Wang4University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan, Guangdong, ChinaState Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, Guangdong, ChinaState Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, Guangdong, ChinaState Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, Guangdong, ChinaState Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, Guangdong, ChinaIn large-area dynamic imaging, an active pixel sensor (APS) is proposed. However, there is a trade-off between signal-to-noise ratio (SNR) and spatial resolution. To resolve this, a 256 × 256 active pixel image sensor array based on a 3-D dual-gate photosensitive thin-film transistor (TFT) is presented in this work, with a pixel pitch of 50 μm, pixel fill factor of 63%, photoconductive gain of 102–104 and spatial resolution of 505 ppi. An electronic global shutter is enabled by dual-gate biasing without additional a shutter TFT. Such an array is capable of dynamic imaging at a frame rate of 34 Hz.https://www.frontiersin.org/articles/10.3389/fphy.2022.1000909/fulllarge-area dynamic imagingelectronic global-shutterone-TFT APSsensor arrayphotoconductive gain |
| spellingShingle | Yunfeng Hu Yangbing Xu Jinming Liu Yihong Qi Kai Wang Electronic global-shutter one-thin-film-transistor active pixel sensor array with a pixel pitch of 50 μm and photoconductive gain greater than 100 for large-area dynamic imaging Frontiers in Physics large-area dynamic imaging electronic global-shutter one-TFT APS sensor array photoconductive gain |
| title | Electronic global-shutter one-thin-film-transistor active pixel sensor array with a pixel pitch of 50 μm and photoconductive gain greater than 100 for large-area dynamic imaging |
| title_full | Electronic global-shutter one-thin-film-transistor active pixel sensor array with a pixel pitch of 50 μm and photoconductive gain greater than 100 for large-area dynamic imaging |
| title_fullStr | Electronic global-shutter one-thin-film-transistor active pixel sensor array with a pixel pitch of 50 μm and photoconductive gain greater than 100 for large-area dynamic imaging |
| title_full_unstemmed | Electronic global-shutter one-thin-film-transistor active pixel sensor array with a pixel pitch of 50 μm and photoconductive gain greater than 100 for large-area dynamic imaging |
| title_short | Electronic global-shutter one-thin-film-transistor active pixel sensor array with a pixel pitch of 50 μm and photoconductive gain greater than 100 for large-area dynamic imaging |
| title_sort | electronic global shutter one thin film transistor active pixel sensor array with a pixel pitch of 50 μm and photoconductive gain greater than 100 for large area dynamic imaging |
| topic | large-area dynamic imaging electronic global-shutter one-TFT APS sensor array photoconductive gain |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2022.1000909/full |
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