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Nociceptor is a crucial sensory neuron that recognizes harmful inputs and sends pain signals to the central nervous system to avoid injury; however, visual nociceptors, considered to be a key bionic function to protect eyesight based on optoelectronic devices, have yet to be developed. Herein this study, a three\u2010terminal flexible memory phototransistor (MPT) is first fabricated, which simulates the visual nociceptive behavior by adjusting light stimulation. The CsPbBr<jats:sub>3<\/jats:sub> quantum\u2010dots (QDs)\u2010few\u2010layered black phosphorous nanosheets (FLBP NSs) heterojunction MPT demonstrates high responsivity of 7.2\u2009\u00d7\u200910<jats:sup>3<\/jats:sup>\u2009AW<jats:sup>\u22121<\/jats:sup> and high detectivity of 1.8\u2009\u00d7\u200910<jats:sup>13<\/jats:sup>\u2009Jones due to the high absorption coefficient of CsPbBr<jats:sub>3<\/jats:sub> QDs materials and a high carrier transport property of FLBP NSs. Moreover, the proposed device can be used to emulate ultraviolet\u2010stimuli\u2010induced characteristics of visual nociceptors such as a threshold, no adaption, relaxation, allodynia, and hyperalgesia. It provides a new avenue for the realization of next\u2010generation neural\u2010integrated devices via its visual pain sense\u2010perception abilities.<\/jats:p><\/jats:sec>","DOI":"10.1002\/aisy.202100257","type":"journal-article","created":{"date-parts":[[2022,2,9]],"date-time":"2022-02-09T05:19:10Z","timestamp":1644383950000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":37,"title":["Ultrasensitive Flexible Memory Phototransistor with Detectivity of 1.8\u00d710<sup>13<\/sup> Jones for Artificial Visual Nociceptor"],"prefix":"10.1002","volume":"4","author":[{"given":"Yue","family":"Gong","sequence":"first","affiliation":[{"name":"College of Electronics and Information Engineering Shenzhen University  Shenzhen 518060 P. 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