Self-powered, all-solution processed, trilayer heterojunction perovskite-based photodetectors

被引：18

作者：

Saleem, Muhammad Imran ^{[1
,2
]}

Yang, Shangyi ^{[1
,2
,3
]}

Zhi, Ruonan ^{[1
,2
]}

Li, Hailong ^{[1
,2
]}

Sulaman, Muhammad ^{[1
,2
]}

Chandrasekar, Perumal Veeramalai ^{[1
,2
]}

Zhang, Zhenheng ^{[1
,2
]}

Batool, Attia ^{[4
]}

Zou, Bingsuo ^{[1
,2
]}

机构：

[1] Beijing Inst Technol, Sch Phys, Ctr Micronanotechnol, Beijing Key Lab Nanophoton & Ultrafine Optoelect, Beijing 100081, Peoples R China

[2] Beijing Inst Technol, Key Lab Adv Optoelect Quantum Design & Measuremen, Minist Educ, Beijing 100081, Peoples R China

[3] Chinese Acad Sci, State Key Lab Transducer Technol, Beijing, Peoples R China

[4] Beijing Inst Technol, Res Ctr Mat Sci, Beijing 100081, Peoples R China

来源：

NANOTECHNOLOGY | 2020年 / 31卷 / 25期

关键词：

self-powered photodetector; trilayer heterojunction; CdS nanorods (NRs) layer; high-performance; specific detectivity; On; Off current ratio; gradient energy alignment; NANOWIRE PHOTODETECTOR; DRIVEN; LAYER;

D O I：

10.1088/1361-6528/ab7de7

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Heterostructures composed of nano-/micro-junctions, combining the excellent photon harvesting properties of nano-systems and the ultrafast carrier transfer of micro-systems, have a promising role in high-performance photodetectors. In this paper, a highly-sensitive trilayer self-powered perovskite-based photodetector ITO/ZnO (70 nm)/CdS (150 nm)/CsPbBr3 (200 nm)/Au, in which the CdS nanorods (NRs) layer is sandwiched between a ZnO/CsPbBr3 interface to reduce the interfacial charge carriers' recombination and the charge transport resistance, is presented. Due to the strong built-in potential and the internal driving electric-field, an ultra-high On/Off current ratio of 10(6) with a responsivity of 86 mA W-1 and a specific detectivity of 6.2 x 10(11) Jones was obtained at zero bias under 85 mu W cm(-2) 405 nm illumination and its rise/decay time at zero bias is 0.3/0.25 s. Therefore, the enhanced device performance strongly suggests the great potential of such a trilayer heterojunction device for use in high-performance perovskite photodetectors.

引用

页数：9

共 36 条

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