Visible to Near-Infrared Photodetection Based on Ternary Organic Heterojunctions

被引：136

作者：

Li, Wei ^{[1
]}

Xu, Yalun ^{[1
]}

Meng, Xianyi ^{[2
]}

Xiao, Zuo ^{[2
]}

Li, Ruiming ^{[1
]}

Jiang, Li ^{[1
]}

Cui, Lihao ^{[1
]}

Zheng, Meijuan ^{[1
]}

Liu, Chang ^{[1
]}

Ding, Liming ^{[2
]}

Lin, Qianqian ^{[1
]}

机构：

[1] Wuhan Univ, Sch Phys & Technol, Minist Educ China, Key Lab Artificial Micro & Nanostruct, Wuhan 430072, Hubei, Peoples R China

[2] Chinese Acad Sci, Key Lab Nanosyst & Hierarch Fabricat, Ctr Excellence Nanosci, Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2019年 / 29卷 / 20期

基金：

中国国家自然科学基金;

关键词：

broadband; bulk heterojunctions; nonfullerene acceptors; organic photodetectors; ternary blends; SOLAR-CELLS; PHOTODIODES; EFFICIENT;

D O I：

10.1002/adfm.201808948

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Organic semiconductors have attracted tremendous attention in the past few years, thanks to their excellent flexibility, solution-processability, low-cost, chemical versatility, etc. Particularly, organic solar cells based on ternary heterojunctions have shown remarkable device performance, with the recent development of nonfullerene acceptor materials. These novel materials are also promising for photodetection. However, there are several key limits facing organic photodetectors, such as relatively large bandgaps, poor charge transport, and stability. In this work, a novel nonfullerene acceptorCO(i)8DFICis introduced, blended with a fullerene derivative and a donor to form ternary heterojunctions. After optimization, photodiodes based on such ternary blends exhibit compelling performance metrics, including low dark current, decent responsivity, large linear dynamic range, fast response, and excellent stability. This device performance is actually on a par with the established silicon technology, suggesting great potential for photodetection and imaging.

引用

页数：7

共 34 条

[1] High-Performance Organic Photodetectors from a High-Bandgap Indacenodithiophene-Based π-Conjugated Donor-Acceptor Polymer [J].