Solution-processed hybrid bilayer photodetectors with rapid response to ultraviolet radiation

被引：4

作者：

Li, Haiguo ^{[1
]}

Fan, Chongcheng ^{[1
]}

Wu, Gang ^{[1
]}

Chen, Hongzheng ^{[1
]}

Wang, Mang ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Polymer Sci & Engn, Key Lab Macromol Synth & Functionalizat, State Key Lab Silicon Mat,Minist Educ, Hangzhou 310027, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2010年 / 43卷 / 42期

基金：

中国国家自然科学基金;

关键词：

ORGANIC SOLAR-CELLS; THIN-FILM; POLYMER; HETEROJUNCTIONS; NANOPARTICLES; PERFORMANCE; MORPHOLOGY; DEVICES; LAYER; UV;

D O I：

10.1088/0022-3727/43/42/425101

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Two hybrid bilayer ultraviolet photodetectors have been fabricated by spin-coating with poly(9,9-dihexylfluorene) (PFH) and ZnO nanoparticles as electron donor and acceptor, respectively. The device structure is inverted for device A: indium tin oxide (ITO)/ZnO/PFH/Au, while for device B a normal structure is applied: ITO/PFH/ZnO/Al. Both devices exhibit obvious photoresponse with a photo-to-dark current ratio of 3-4 orders of magnitude under UV radiation of 1 mW cm(-2) at 365 nm through the ITO electrode. Under reverse bias, the photoresponse of device A exhibits severe persistent photoconduction. However, this is efficiently avoided in device B due to the presence of sufficient oxygen to capture the free electrons in ZnO. The study shown here may provide a useful guideline to achieve low-cost hybrid UV detectors with rapid response.

引用

页数：6

共 36 条

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