Intrinsic vacancy in 2D defective semiconductor In_(2)S_(3) for artificial photonic nociceptor  

作　　者：Peng Wang Wuhong Xue Wenjuan Ci Ruilong Yang Xiaohong Xu 

机构地区：[1]Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education&School of Chemistry and Materials Science of Shanxi Normal University,Taiyuan 030031,People’s Republic of China

出　　处：《Materials Futures》2023年第3期148-155,共8页材料展望（英文）

基　　金：the National Key Research and Development Program of China(2022YFB3505301);the National Natural Science Foundation of China(12174237,12241403 and 52002232).

摘　　要：It is crucial to develop an advanced artificially intelligent optoelectronic information system that accurately simulates photonic nociceptors like the activation process of a human visual nociceptive pathway.Visible light reaches the retina for human visual perception,but its excessive exposure can damage nearby tissues.However,there are relatively few reports on visible light–triggered nociceptors.Here,we introduce a two-dimensional natural defectiveⅢ–Ⅵsemiconductorβ-In_(2)S_(3)and utilize its broad spectral response,including visible light brought by intrinsic defects,for visible light–triggered artificial photonic nociceptors.The response mode of the device,under visible light excitation,is very similar to that of the human eye.It perfectly reproduces the pain perception characteristics of the human visual system,such as‘threshold,’‘relaxation,’‘no adaptation’,and‘sensitization’.Its working principle is attributed to the mechanism of charge trapping associated with the intrinsic vacancies in In_(2)S_(3)nanosheets.This work provides an attractive material system(intrinsic defective semiconductors)for broadband artificial photonic nociceptors.

关 键 词：defective semiconductor In_(2)S_(3) intrinsic vacancy artificial photonic nociceptors 

分 类 号：TN304[电子电信—物理电子学]