Hexa-peri-hexabenzocoronene and diketopyrrolopyrrole based D-A conjugated copolymers for organic field effect transistor and polymer solar cells

	Hexa-peri-hexabenzocoronene and diketopyrrolopyrrole based D-A conjugated copolymers for organic field effect transistor and polymer solar cells
	Gao, Chen 1,2; Qiao, Zi 1; Shi, Keli 1,3; Chen, Song 1; Li, Yongfang 3; Yu, Gui 3; Li, Xiaoyu 1; Wang, Haiqiao 1,2
刊名	ORGANIC ELECTRONICS
	2016-11-01
卷号	38 页码:245-255
关键词	Hexa-peri-hexabenzocoronene D-A conjugated copolymers Polymer solar cells Organic field effect transistor
英文摘要	Hexa-peri-hexabenzocoronene (HBC) is a disc-shaped conjugated molecule with strong pi-pi stacking property, high intrinsic charge mobility and good self-assembly property. But for a long time, the organic photovoltaic (OPV) solar cells based on HBC small organic molecules demonstrated low power conversion efficiencies (PCEs). In this study, a series of polymers named as PHBCDPPC20, PHBCDPPC8, PHBCDPPF and PHBCDPPDT were designed and synthesized through copolymerization of HBC with bulky mesityl substituents and strong electron-withdrawing diketopyrrolopyrrole (DPP) with different alkyl side chains and various pi-bridges. Introduction of DPP unit into the HBC derivatives broadened the absorption spectra and lowered the band gaps. Bulky mesityl substituents attached to periphery of HBC prevented polymers from self-aggregating into too large domain size in the blend films of photovoltaic devices. The different pi-bridges have significant effect on the structure conformation of the polymers. The polymer PHBCDPPDT with bithiophene pi-bridges demonstrated the broadest absorption for its extensive pi-conjugation and more coplanar conformation compared with the thiophene pi-bridge one. PHBCDPPC20, PHBCDPPC8, PHBCDPPF and PHBCDPPDT gave field-effect hole mobilities of 1.35 x 10(-3), 2.31 x 10(-4), 2.79 x 10(-4) and 8.60 x 10(-3) cm(2) V-1 s(-1), respectively. The solar cells based on these polymers displayed PCEs of 2.12%, 2.85%, 1.89% and 2.74%. To our knowledge, 2.85% is the highest PCE for the HBC-based photovoltaic materials till now. (C) 2016 Published by Elsevier B.V.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35503]
专题	化学研究所_有机固体实验室
作者单位	1.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composite, Beijing 100029, Peoples R China 2.Beijing Univ Chem Technol, Key Lab Carbon Fiber & Funct Polymers, Minist Educ, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Gao, Chen,Qiao, Zi,Shi, Keli,et al. Hexa-peri-hexabenzocoronene and diketopyrrolopyrrole based D-A conjugated copolymers for organic field effect transistor and polymer solar cells[J]. ORGANIC ELECTRONICS,2016,38:245-255.
APA	Gao, Chen.,Qiao, Zi.,Shi, Keli.,Chen, Song.,Li, Yongfang.,...&Wang, Haiqiao.(2016).Hexa-peri-hexabenzocoronene and diketopyrrolopyrrole based D-A conjugated copolymers for organic field effect transistor and polymer solar cells.ORGANIC ELECTRONICS,38,245-255.
MLA	Gao, Chen,et al."Hexa-peri-hexabenzocoronene and diketopyrrolopyrrole based D-A conjugated copolymers for organic field effect transistor and polymer solar cells".ORGANIC ELECTRONICS 38(2016):245-255.