基于SnS_(2)/InSe异质结的高性能宽带光电探测器  

High performance and broadband photodetectors based on SnS_(2)/InSe heterojunction

作　　者：王冰辉 邢艳辉[1] 贺雯馨 关宝璐[1] 韩军[1] 董晟园 李嘉豪 方佩景 韩梓硕 张宝顺[2] 曾中明[2] WANG Bing-Hui;XING Yan-Hui;HE Wen-Xin;GUAN Bao-Lu;HAN Jun;DONG Sheng-Yuan;LI Jia-Hao;FANG Pei-Jing;HAN Zi-Shuo;ZHANG Bao-Shun;ZENG Zhong-Ming(Key Laboratory of Opto-electronics Technology,Ministry of Education,College of Microelectronics,Beijing University of Technology,Beijing 100124,China;Nanofabrication facility,Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China)

机构地区：[1]北京工业大学微电子学院光电子技术教育部重点实验室,北京100124 [2]中国科学院苏州纳米技术与纳米仿生研究所纳米加工平台,江苏苏州215123

出　　处：《红外与毫米波学报》2023年第5期659-665,共7页Journal of Infrared and Millimeter Waves

基　　金：supported by the National Natural Science Foundation of China(61574011,60908012,61575008,61775007,61731019,61874145,62074011,62134008);the Beijing Natural Science Foundation(4182015,4172011,4202010);Beijing Nova Program(Z201100006820096);International Student related expenses-Department of Information(040000513303).

摘　　要：我们报道了一种基于SnS_(2)/InSe垂直异质结的宽带光电探测器,其光谱范围为365-965 nm。其中,InSe作为光吸收层,有效扩展了光谱范围,SnS_(2)作为传输层,与InSe形成异质结,促进了电子-空穴对的分离,增强了光响应。该光电探测器在365 nm下具有813 A/W的响应度。并且,在965nm光照下它仍然具有371 A/W的高响应度,1.3×10^(5)%的外量子效率,3.17×10^(12)Jones的比探测率,以及27 ms的响应时间。该研究为高响应宽带光电探测器提供了一种新的方法。We reported a broadband photodetector with a spectral range of 365-965 nm,based on a SnS_(2)/InSe ver⁃tical heterojunction.In this device,InSe serves as the optical absorption layer,effectively extending the spectral range,while SnS_(2)functions as the transmission layer,forming a heterojunction with InSe to facilitate separation of electron-hole pairs and enhance the responsivity.The photodetector exhibits a responsivity of 813 A/W under 365 nm.Moreover,it still maintained a high responsivity of 371 A/W,an external quantum efficiency of 1.3×10^(5)%,a specific detectivity of 3.17×10^(12)Jones,and a response time of 27 ms under 965 nm illumination.The above investigation provides a new approach for broadband photodetectors with high responsivity.

关 键 词：二维材料 异质结 宽带光电探测器 

分 类 号：TN36[电子电信—物理电子学]