Improving the photocurrent of a PBDTTT-CF and PCBM based organic thin film photoconductor by forming a bilayer structure

	Improving the photocurrent of a PBDTTT-CF and PCBM based organic thin film photoconductor by forming a bilayer structure
	Jin, Zhiwen 1; Zhou, Qing 1; Mao, Peng 1; Wang, Aiji 2; Shang, Boyang 2; Wang, Yinshu 2; Li, Hui 1; Wang, Jizheng 1
刊名	RSC ADVANCES
	2015
卷号	5 期号:103 页码:84680-84684
英文摘要	The performance of traditional organic thin film photoconductors (OTFPs) is limited by the low carrier mobility in the donor : acceptor (D : A) blend film. To overcome such a problem, a higher-mobility carrier transport layer should be included in the D : A blend based device. However doing so will certainly result in a bilayer or even multilayer structure, which is usually a challenge for all-solution processing methods. Here by carefully controlling and adjusting the fabrication process, an all-solution-processed PBDTTT-CF/PBDTT-TCF : PCBM bilayer OTFP is demonstrated. In such a bilayer device, the PBDTTT-CF : PCBM blend layer is responsible for light absorption and free photo carrier generation, and the underlying PBDTTT-CF layer is responsible for the photo carrier transport inside the device. The hole mobility in the PBDTTT-CF layer is measured to be 9.1 x 10(-4) cm(2) V-1 s(-1), much higher than that in the PBDTTT-CF : PCBM blend film, which is only 4.3 x 10(-5) cm(2) V-1 s(-1). As a result of the faster carrier transport, the bilayer device exhibits a greatly enhanced photocurrent, which is about 7 times higher than that of the single blend layer device. Meanwhile, the on/off response of the bilayer device is also improved, which is shorter than 0.1/0.1 s.
收录类别	SCI
语种	英语
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/28904]
专题	化学研究所_有机固体实验室
作者单位	1.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Jin, Zhiwen,Zhou, Qing,Mao, Peng,et al. Improving the photocurrent of a PBDTTT-CF and PCBM based organic thin film photoconductor by forming a bilayer structure[J]. RSC ADVANCES,2015,5(103):84680-84684.
APA	Jin, Zhiwen.,Zhou, Qing.,Mao, Peng.,Wang, Aiji.,Shang, Boyang.,...&Wang, Jizheng.(2015).Improving the photocurrent of a PBDTTT-CF and PCBM based organic thin film photoconductor by forming a bilayer structure.RSC ADVANCES,5(103),84680-84684.
MLA	Jin, Zhiwen,et al."Improving the photocurrent of a PBDTTT-CF and PCBM based organic thin film photoconductor by forming a bilayer structure".RSC ADVANCES 5.103(2015):84680-84684.