Ultrafast Photovoltaic-Type Deep Ultraviolet Photodetectors Using Hybrid Zero-/Two-Dimensional Heterojunctions

被引：62

作者：

Kan, Hao ^{[1
,2
]}

Zheng, Wei ^{[3
]}

Lin, Richeng ^{[3
]}

Li, Min ^{[1
,2
]}

Fu, Chen ^{[1
]}

Sun, Huibin ^{[1
]}

Dong, Mei ^{[3
]}

Xu, Cunhua ^{[3
]}

Luo, Jingting ^{[1
]}

Fu, YongQing ^{[4
]}

Huang, Feng ^{[3
]}

机构：

[1] Shenzhen Univ, Coll Phys & Energy, Shenzhen Key Lab Adv Thin Films & Applicat, Shenzhen 518060, Peoples R China

[2] Shenzhen Univ, Coll Optoelect Engn, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Shenzhen 518060, Peoples R China

[3] Sun Yat Sen Univ, Sch Mat, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

[4] Northumbria Univ, Fac Engn & Environm, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England

来源：

ACS APPLIED MATERIALS & INTERFACES | 2019年 / 11卷 / 08期

基金：

英国工程与自然科学研究理事会; 中国国家自然科学基金;

关键词：

deep ultraviolet; ZnS quantum dots; graphene; photovoltaic detector; ultrafast; ROOM-TEMPERATURE FERROMAGNETISM; QUANTUM DOTS;

D O I：

10.1021/acsami.8b20357

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Deep ultraviolet (DUV) photodetectors have wide-range applications in satellite communications, air purification, and missile-plume detection. However, the critical barriers for the currently available wide-band gap semiconductor film-based DUV photodetectors are their low efficiency, complicated processes, and lattice mismatch with the substrate. Quantum dot (QD) devices prepared using solution-based methods can solve these problems. However, so far, there are no reports on photovoltaic-type DUV photodetectors using QDs. In this study, we propose a novel methodology to construct a hybrid zero-/two-dimensional DUV photodetector (p-type graphene/ZnS QDs/4H-SiC) with photovoltaic characteristics. The device exhibits excellent selectivity for the DUV light and has an ultrafast response speed (rise time: 28,us and decay time: 0.75 ms), which are much better than those reported for conventional photoconductive photodetectors.

引用

页码：8412 / 8418

页数：7

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