A multifunctional optoelectronic device based on 2D material with wide bandgap  

作　　者：Hongwei Xu Jingwei Liu Sheng Wei Jie Luo Rui Gong Siyuan Tian Yiqi Yang Yukun Lei Xinman Chen Jiahong Wang Gaokuo Zhong Yongbing Tang Feng Wang Hui-Ming Cheng Baofu Ding 

机构地区：[1]Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen,Guangdong 518055,China [2]School of Semiconductor Science and Technology,South China Normal University,Foshan,Guangdong 528225,China [3]Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen,Guangdong 518055,China [4]Hubei Three Gorges Laboratory,Yichang,Hubei 443007,China [5]Shenzhen Geim Graphene Center(SGC),Tsinghua-Berkeley Shenzhen Institute(TBSI)&Tsinghua Shenzhen International Graduate School(SIGS),Tsinghua University,Shenzhen,Guangdong 518055,China

出　　处：《Light(Science & Applications)》2023年第12期2668-2676,共9页光（科学与应用)（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grants 52273311 and T2293693);the Guangdong Innovative and Entrepreneurial Research Team Program(No.2017ZT07C341);the Shenzhen Basic Research Project(Grants JCYJ20220818100806014 and JCYJ20190809180605522);the Science and Technology Planning Project of Guangdong Province(Grants 2022A0505050066).

摘　　要：Low-dimensional materials exhibit unique quantum confinement effects and morphologies as a result of their nanoscale size in one or more dimensions,making them exhibit distinctive physical properties compared to bulk counterparts.Among all low-dimensional materials,due to their atomic level thickness,two-dimensional materials possess extremely large shape anisotropy and consequently are speculated to have large optically anisotropic absorption.In this work,we demonstrate an optoelectronic device based on the combination of two-dimensional material and carbon dot with wide bandgap.High-efficient luminescence of carbon dot and extremely large shape anisotropy(>1500)of two-dimensional material with the wide bandgap of>4 eV cooperatively endow the optoelectronic device with multi-functions of optically anisotropic blue-light emission,visible light modulation,wavelength-dependent ultraviolet-light detection as well as blue fluorescent film assemble.This research opens new avenues for constructing multi-function-integrated optoelectronic devices via the combination of nanomaterials with different dimensions.

关 键 词：ANISOTROPY ANISOTROPIC ULTRAVIOLET 

分 类 号：TN15[电子电信—物理电子学] TB34[一般工业技术—材料科学与工程]