Plasmonically enhanced solar-blind self-powered photodetector array utilizing Pt nanoparticlesmodified Ga2O3 nanorod heterojunction  

作　　者：QINZHI ZHAO LINGFENG MAO PENG WAN LIJIAN LI KAI TANG CAIXIA KAN DANING SHI XIAOXUAN WANG MINGMING JIANG 

机构地区：[1]College of Physics,MIIT Key Laboratory of Aerospace Information Materials and Physics,Key Laboratory for Intelligent Nano Materials and Devices,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China [2]State Key Laboratory of Digital Medical Engineering,School of Electronic Science&Engineering,Southeast University,Nanjing 210096,China

出　　处：《Photonics Research》2025年第1期140-149,共10页光子学研究(英文版)

基　　金：Postgraduate Research&Practice Innovation Program of NUAA(xcxjh20232107);National Natural Science Foundation of China(12374257).

摘　　要：Low-dimensional Ga_(2)O_(3)monocrystalline micro/nanostructures show promising application prospects in largearea arrays,integrated circuits,and flexible optoelectronic devices,owing to their exceptional optoelectronic performance and scalability for mass production.Herein,we developed an 8×8 array of high-performance solar-blind ultraviolet photodetectors based on Pt nanoparticles-modified Ga_(2)O_(3)(PtNPs@Ga_(2)O_(3))nanorod film heterojunction with p-GaN substrate serving as the hole transporting layer.The PtNPs@Ga_(2)O_(3)∕GaN heterojunction detector units exhibit outstanding photovoltaic performance at 0 V bias,demonstrating high responsivity(189.0 mA/W),specific detectivity(4.0×10^(12)Jones),external quantum efficiency(92.4%),and swift response time(674/692μs)under an irradiance of 1μW∕cm^(2)at 254 nm.Their exceptional performance stands out among competitors of the same type.In addition,the detector array demonstrated satisfactory results in a conceptual demonstration of high-resolution imaging,benefiting from the excellent stability and uniformity exhibited by its array units.These findings provide a straightforward and viable method for developing a high-performance solar-blind ultraviolet detector array based on low-dimensional Ga_(2)O_(3)nanorod monocrystalline,demonstrating their potential advancement in large-area,integrable,and flexible optoelectronic devices.

关 键 词：HETEROJUNCTION exceptional ULTRAVIOLET 

分 类 号：O53[理学—等离子体物理] TN36[理学—物理]