Split-Ring Structured All-Inorganic Perovskite Photodetector Arrays for Masterly Internet of Things  

作　　者：Bori Shi Pingyang Wang Jingyun Feng Chang Xue Gaojie Yang Qingwei Liao Mengying Zhang Xingcai Zhang Weijia Wen Jinbo Wu 

机构地区：[1]Materials Genome Institute,Shanghai University,Shanghai 200444,People’s Republic of China [2]Zhejiang Laboratory,Hangzhou 311100,People’s Republic of China [3]HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute,Futian,Shenzhen,People’s Republic of China [4]School of Engineering,Massachusetts Institute of Technology,Cambridge,MA 02139,USA [5]School of Engineering and Applied Sciences,Harvard University,Cambridge,MA 02138,USA [6]Department of Physics,Shanghai University,Shanghai 200444,People’s Republic of China [7]The Advanced Material Thrust,The Hong Kong University of Science and Technology(Guangzhou),Guangzhou,People’s Republic of China

出　　处：《Nano-Micro Letters》2023年第1期25-42,共18页纳微快报（英文版）

基　　金：support by the Key Research Project of Zhejiang Laboratory(N.O.2021PE0AC02);the National Natural Science Foundation of China(N.O.11674210);the Project of Hetao Shenzhen-Hong Kong Science and Technology Innovation Cooperation Zone(HZQB-KCZYB-2020083).

摘　　要：Photodetectors with long detection distances and fast response are important media in constructing a non-contact human-machine interface for the Masterly Internet of Things(MIT).All-inorganic perovskites have excellent optoelectronic performance with high moisture and oxygen resistance,making them one of the promising candidates for high-performance photodetectors,but a simple,low-cost and reliable fabrication technology is urgently needed.Here,a dual-function laser etching method is developed to complete both the lyophilic split-ring structure and electrode patterning.This novel split-ring structure can capture the perovskite precursor droplet efficiently and achieve the uniform and compact deposition of CsPbBr3 films.Furthermore,our devices based on laterally conducting split-ring structured photodetectors possess outstanding performance,including the maximum responsivity of 1.44×105 mA W^(−1),a response time of 150μs in 1.5 kHz and one-unit area<4×10-2 mm2.Based on these split-ring photodetector arrays,we realized three-dimensional gesture detection with up to 100 mm distance detection and up to 600 mm s^(−1) speed detection,for low-cost,integrative,and non-contact human-machine interfaces.Finally,we applied this MIT to wearable and flexible digital gesture recognition watch panel,safe and comfortable central controller integrated on the car screen,and remote control of the robot,demonstrating the broad potential applications.

关 键 词：Split-ring DEWETTING Perovskite photodetector array Human-machine interface Gesture recognition 

分 类 号：TM914.4[电气工程—电力电子与电力传动]