Comprehensive studies of response characteristics of organic photodetectors based on rubrene and C-60

doi:10.1063/1.4885078

CORC > 化学研究所 > 中国科学院化学研究所

	Comprehensive studies of response characteristics of organic photodetectors based on rubrene and C-60
	Yang, Dezhi; Xu, Kai; Zhou, Xiaokang; Wang, Yanping; Ma, Dongge
刊名	JOURNAL OF APPLIED PHYSICS
	2014-06-28
卷号	115 期号:24
ISSN号	0021-8979
DOI	10.1063/1.4885078
英文摘要	We studied the transient response characteristics of organic photodetectors composing of high mobility materials of rubrene and C-60, respectively, as donor and acceptor. It was found that the response speed was limited by the delay time of both exciton diffusion and transit, and an anomalous phenomenon that the bandwidth decreases as the reverse bias increases was found for the first time. The investigation of frequency dependence at different device structures and light excitations demonstrated that the light absorption of rubrene prevents the photodetector from obtaining a fast response. With the help of magnetic field effect study, it was clearly elucidated that the slow diffusion time of the long lifetime triplet excitons generated from singlet fission in rubrene limited the bandwidth of the device. Moreover, the simulation of the response of photodetector under transient and steady state by exciton transport-diffusion equation showed that the exciton dissociation efficiency in rubrene increases more quickly than that in C-60, which should account for the negative dependence of bandwidth on the reverse bias in rubrene-based device. (C) 2014 AIP Publishing LLC.
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000338633600051
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/52797]
专题	中国科学院化学研究所
通讯作者	Ma, Dongge
作者单位	Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Yang, Dezhi,Xu, Kai,Zhou, Xiaokang,et al. Comprehensive studies of response characteristics of organic photodetectors based on rubrene and C-60[J]. JOURNAL OF APPLIED PHYSICS,2014,115(24).
APA	Yang, Dezhi,Xu, Kai,Zhou, Xiaokang,Wang, Yanping,&Ma, Dongge.(2014).Comprehensive studies of response characteristics of organic photodetectors based on rubrene and C-60.JOURNAL OF APPLIED PHYSICS,115(24).
MLA	Yang, Dezhi,et al."Comprehensive studies of response characteristics of organic photodetectors based on rubrene and C-60".JOURNAL OF APPLIED PHYSICS 115.24(2014).