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However, strong background illumination can overwhelm weak optical signals, while downstream compensation imposes substantial computational burdens, thereby introducing considerable processing latency. Here, we demonstrate an ultrathin (8 \u00b5m), mechanically flexible ambipolar electronic vision (AEV) system that suppresses background optical interference directly at the photodetection front end. Symmetric back\u2010to\u2010back Schottky barriers minimize the net vertical internal electric field, while a self\u2010assembled donor\u2010enriched micron\u2010scale texture generates a small surface\u2010potential gradient (\u223c10 mV) to balance carrier transport and collection. This mechanism stabilizes illumination\u2010direction\u2010dependent photocurrent polarity near zero bias, reduces the minimum irradiance required for ambipolar operation from 175 mW cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    to 0.1 mW cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    , corresponding to an approximately 1750\u2010fold reduction. Through the device\u2010level superposition of oppositely signed photocurrents, the ultrathin, flexible AEV array directly suppresses background\u2010induced photocurrent offsets and exhibits bidirectional response times of \u223c20 \u00b5s, enabling rapid photonic adaptation. The ambipolar response remains stable after array integration and 3500 bending cycles. Nearly 100% recognition accuracy is maintained under strong background illumination of \u223c11 mW cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    , establishing a device\u2010level strategy for rapid and reliable visual perception in flexible and conformable electronic vision systems.\n                  <\/jats:p>","DOI":"10.1002\/adma.75139","type":"journal-article","created":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T03:45:26Z","timestamp":1790394326000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Micron\u2010Textured Ambipolar Photodetectors Enabling \u223c20 \u00b5s Photonic Adaptation"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-3428-8252","authenticated-orcid":false,"given":"Tingting","family":"Yan","sequence":"first","affiliation":[{"name":"College of Smart Materials and Future Energy State Key Laboratory of Molecular Engineering of Polymers Fudan University  Shanghai P. 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China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junhao","family":"Chu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Photovoltaic Science and Technology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Institute of Optoelectronics Fudan University  Shanghai P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8495-8627","authenticated-orcid":false,"given":"Limin","family":"Wu","sequence":"additional","affiliation":[{"name":"College of Smart Materials and Future Energy State Key Laboratory of Molecular Engineering of Polymers Fudan University  Shanghai P. R. China"},{"name":"College of Chemistry and Chemical Engineering Inner Mongolia University  Hohhot P. R. 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