Retinomorphic Motion Detector Fabricated with Organic Infrared Semiconductors
Abstract Organic retinomorphic sensors offer the advantage of in‐sensor processing to filter out redundant static backgrounds and are well suited for motion detection. To improve this promising structure, here, the key role of interfacial energetics in promoting charge accumulation to raise the inhe...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-11-01
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| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202304688 |
| _version_ | 1797637378643329024 |
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| author | Shuo‐En Wu Longhui Zeng Yichen Zhai Chanho Shin Naresh Eedugurala Jason D. Azoulay Tse Nga Ng |
| author_facet | Shuo‐En Wu Longhui Zeng Yichen Zhai Chanho Shin Naresh Eedugurala Jason D. Azoulay Tse Nga Ng |
| author_sort | Shuo‐En Wu |
| collection | DOAJ |
| description | Abstract Organic retinomorphic sensors offer the advantage of in‐sensor processing to filter out redundant static backgrounds and are well suited for motion detection. To improve this promising structure, here, the key role of interfacial energetics in promoting charge accumulation to raise the inherent photoresponse of the light‐sensitive capacitor is studied. Specifically, incorporating appropriate interfacial layers around the photoactive layer is crucial to extend the carrier lifetime, as confirmed by intensity‐modulated photovoltage spectroscopy. Compared to its photodiode counterpart, the retinomorphic sensor shows better detectivity and response speed due to the additional insulating layer, which reduces the dark current and the RC time constant. Lastly, three retinomorphic sensors are integrated into a line array to demonstrate the detection of movement speed and direction, showing the potential of retinomorphic designs for efficient motion tracking. |
| first_indexed | 2024-03-11T12:47:31Z |
| format | Article |
| id | doaj.art-3a54f450e32d4a8db7013ab0b0e0108f |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-03-11T12:47:31Z |
| publishDate | 2023-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-3a54f450e32d4a8db7013ab0b0e0108f2023-11-04T08:56:52ZengWileyAdvanced Science2198-38442023-11-011031n/an/a10.1002/advs.202304688Retinomorphic Motion Detector Fabricated with Organic Infrared SemiconductorsShuo‐En Wu0Longhui Zeng1Yichen Zhai2Chanho Shin3Naresh Eedugurala4Jason D. Azoulay5Tse Nga Ng6Materials Science and Engineering Program University of California San Diego La Jolla CA 92093 USADepartment of Electrical and Computer Engineering University of California San Diego La Jolla CA 92093 USADepartment of Mechanical Engineering University of California San Diego La Jolla CA 92093 USAMaterials Science and Engineering Program University of California San Diego La Jolla CA 92093 USASchool of Chemistry and Biochemistry and School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332 USASchool of Chemistry and Biochemistry and School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332 USAMaterials Science and Engineering Program University of California San Diego La Jolla CA 92093 USAAbstract Organic retinomorphic sensors offer the advantage of in‐sensor processing to filter out redundant static backgrounds and are well suited for motion detection. To improve this promising structure, here, the key role of interfacial energetics in promoting charge accumulation to raise the inherent photoresponse of the light‐sensitive capacitor is studied. Specifically, incorporating appropriate interfacial layers around the photoactive layer is crucial to extend the carrier lifetime, as confirmed by intensity‐modulated photovoltage spectroscopy. Compared to its photodiode counterpart, the retinomorphic sensor shows better detectivity and response speed due to the additional insulating layer, which reduces the dark current and the RC time constant. Lastly, three retinomorphic sensors are integrated into a line array to demonstrate the detection of movement speed and direction, showing the potential of retinomorphic designs for efficient motion tracking.https://doi.org/10.1002/advs.202304688interfacial modificationmotion detectionorganic infrared polymersretinomorphic sensors |
| spellingShingle | Shuo‐En Wu Longhui Zeng Yichen Zhai Chanho Shin Naresh Eedugurala Jason D. Azoulay Tse Nga Ng Retinomorphic Motion Detector Fabricated with Organic Infrared Semiconductors Advanced Science interfacial modification motion detection organic infrared polymers retinomorphic sensors |
| title | Retinomorphic Motion Detector Fabricated with Organic Infrared Semiconductors |
| title_full | Retinomorphic Motion Detector Fabricated with Organic Infrared Semiconductors |
| title_fullStr | Retinomorphic Motion Detector Fabricated with Organic Infrared Semiconductors |
| title_full_unstemmed | Retinomorphic Motion Detector Fabricated with Organic Infrared Semiconductors |
| title_short | Retinomorphic Motion Detector Fabricated with Organic Infrared Semiconductors |
| title_sort | retinomorphic motion detector fabricated with organic infrared semiconductors |
| topic | interfacial modification motion detection organic infrared polymers retinomorphic sensors |
| url | https://doi.org/10.1002/advs.202304688 |
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