Retina-inspired organic neuromorphic vision sensor with polarity modulation for decoding light information
Abstract The neuromorphic vision sensor (NeuVS), which is based on organic field-effect transistors (OFETs), uses polar functional groups (PFGs) in polymer dielectrics as interfacial units to control charge carriers. However, the mechanism of modulating charge transport on basis of PFGs in devices i...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Publishing Group
2023-11-01
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| Series: | Light: Science & Applications |
| Online Access: | https://doi.org/10.1038/s41377-023-01310-3 |
| _version_ | 1797629961094299648 |
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| author | Ting Jiang Yiru Wang Wanxin Huang Haifeng Ling Guofeng Tian Yunfeng Deng Yanhou Geng Deyang Ji Wenping Hu |
| author_facet | Ting Jiang Yiru Wang Wanxin Huang Haifeng Ling Guofeng Tian Yunfeng Deng Yanhou Geng Deyang Ji Wenping Hu |
| author_sort | Ting Jiang |
| collection | DOAJ |
| description | Abstract The neuromorphic vision sensor (NeuVS), which is based on organic field-effect transistors (OFETs), uses polar functional groups (PFGs) in polymer dielectrics as interfacial units to control charge carriers. However, the mechanism of modulating charge transport on basis of PFGs in devices is unclear. Here, the carboxyl group is introduced into polymer dielectrics in this study, and it can induce the charge transfer process at the semiconductor/dielectric interfaces for effective carrier transport, giving rise to the best device mobility up to 20 cm2 V−1 s−1 at a low operating voltage of −1 V. Furthermore, the polarity modulation effect could further increase the optical figures of merit in NeuVS devices by at least an order of magnitude more than the devices using carboxyl group-free polymer dielectrics. Additionally, devices containing carboxyl groups improved image sensing for light information decoding with 52 grayscale signals and memory capabilities at an incredibly low power consumption of 1.25 fJ/spike. Our findings provide insight into the production of high-performance polymer dielectrics for NeuVS devices. |
| first_indexed | 2024-03-11T11:01:12Z |
| format | Article |
| id | doaj.art-7f5c94ce5a934bc681a7e24e4a4e131c |
| institution | Directory Open Access Journal |
| issn | 2047-7538 |
| language | English |
| last_indexed | 2024-03-11T11:01:12Z |
| publishDate | 2023-11-01 |
| publisher | Nature Publishing Group |
| record_format | Article |
| series | Light: Science & Applications |
| spelling | doaj.art-7f5c94ce5a934bc681a7e24e4a4e131c2023-11-12T12:30:32ZengNature Publishing GroupLight: Science & Applications2047-75382023-11-0112111110.1038/s41377-023-01310-3Retina-inspired organic neuromorphic vision sensor with polarity modulation for decoding light informationTing Jiang0Yiru Wang1Wanxin Huang2Haifeng Ling3Guofeng Tian4Yunfeng Deng5Yanhou Geng6Deyang Ji7Wenping Hu8Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin UniversityState Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials, Nanjing University of Posts & TelecommunicationsState Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials, Nanjing University of Posts & TelecommunicationsState Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials, Nanjing University of Posts & TelecommunicationsState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical TechnologySchool of Materials Science and Engineering, Tianjin UniversitySchool of Materials Science and Engineering, Tianjin UniversityTianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin UniversityHaihe Laboratory of Sustainable Chemical TransformationsAbstract The neuromorphic vision sensor (NeuVS), which is based on organic field-effect transistors (OFETs), uses polar functional groups (PFGs) in polymer dielectrics as interfacial units to control charge carriers. However, the mechanism of modulating charge transport on basis of PFGs in devices is unclear. Here, the carboxyl group is introduced into polymer dielectrics in this study, and it can induce the charge transfer process at the semiconductor/dielectric interfaces for effective carrier transport, giving rise to the best device mobility up to 20 cm2 V−1 s−1 at a low operating voltage of −1 V. Furthermore, the polarity modulation effect could further increase the optical figures of merit in NeuVS devices by at least an order of magnitude more than the devices using carboxyl group-free polymer dielectrics. Additionally, devices containing carboxyl groups improved image sensing for light information decoding with 52 grayscale signals and memory capabilities at an incredibly low power consumption of 1.25 fJ/spike. Our findings provide insight into the production of high-performance polymer dielectrics for NeuVS devices.https://doi.org/10.1038/s41377-023-01310-3 |
| spellingShingle | Ting Jiang Yiru Wang Wanxin Huang Haifeng Ling Guofeng Tian Yunfeng Deng Yanhou Geng Deyang Ji Wenping Hu Retina-inspired organic neuromorphic vision sensor with polarity modulation for decoding light information Light: Science & Applications |
| title | Retina-inspired organic neuromorphic vision sensor with polarity modulation for decoding light information |
| title_full | Retina-inspired organic neuromorphic vision sensor with polarity modulation for decoding light information |
| title_fullStr | Retina-inspired organic neuromorphic vision sensor with polarity modulation for decoding light information |
| title_full_unstemmed | Retina-inspired organic neuromorphic vision sensor with polarity modulation for decoding light information |
| title_short | Retina-inspired organic neuromorphic vision sensor with polarity modulation for decoding light information |
| title_sort | retina inspired organic neuromorphic vision sensor with polarity modulation for decoding light information |
| url | https://doi.org/10.1038/s41377-023-01310-3 |
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