Donor End-Capped Hexafluorinated Oligomers for Organic Solar Cells with   9.3% Efficiency by Engineering the Position of pi-Bridge and Sequence of   Two-Step Annealing

doi:10.1021/acs.chemmater.6b03796

CORC > 北京大学 > 化学与分子工程学院

	Donor End-Capped Hexafluorinated Oligomers for Organic Solar Cells with 9.3% Efficiency by Engineering the Position of pi-Bridge and Sequence of Two-Step Annealing
	Wang, Jin-Liang ; Liu, Kai-Kai ; Liu, Sha ; Xiao, Fei ; Chang, Zheng-Feng ; Zheng, Yu-Qing ; Doug, Jin-Hu ; Zhang, Ru-Bo ; Wu, Hong-Bin ; Pei, Jian ; Cao, Yong
刊名	CHEMISTRY OF MATERIALS
	2017
关键词	PROCESSED SMALL MOLECULES FIELD-EFFECT TRANSISTORS CONJUGATED POLYMERS SIDE-CHAIN PHOTOVOLTAIC PERFORMANCE HETEROATOM SUBSTITUTION BENZODITHIOPHENE UNIT ELECTRON-ACCEPTORS MORPHOLOGY CONTROL FILL FACTOR
DOI	10.1021/acs.chemmater.6b03796
英文摘要	A pair of isomeric hexafluorinated oligomers (Th6FSe and Se6FTh), which are with the same aromatic compositions (difluorobenzothiadiazoles central core, IDT units, and donor end-capped groups), but differ in the pi-bridge position (selenophene and thiophene), were designed and successfully synthesized. The potential of the resulted oligomers as donor materials for BHJ-OSCs was systematically investigated through optical absorption, AFM, TEM, GIRD, charge mobility measurement, and photovoltaic device fabrication. It was found that the bridge sequences in the resulted oligomers play a subtle but key role in device performances. Moreover, as a result of increase of crystalline content and desired phase separation after rapid SVA or combined TA and SVA treatment, the device performance of the resultant devices undergo significant enhancement. Notably, the Se6FTh devices showed a best PCE of ca. 9.3% with SVA+TA treatment, which is the highest PCE of BHJ-OSCs based on donor end-capped oligomers. These primary study demonstrated that the sequence of pr-bridge and annealing treatments play critical roles for improving ordered and crystalline morphology and enhanced PCE, and hence can provide an useful strategy toward highly efficient oligomers for BHJ-OSCs.; National Natural Science Foundation of China [21472012, 21672023, 91333206]; Thousand Youth Talents Plan of China; Beijing Natural Science Foundation [2152027]; SCI(E); ARTICLE; 3; 1036-1046; 29
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/475150]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wang, Jin-Liang,Liu, Kai-Kai,Liu, Sha,et al. Donor End-Capped Hexafluorinated Oligomers for Organic Solar Cells with 9.3% Efficiency by Engineering the Position of pi-Bridge and Sequence of Two-Step Annealing[J]. CHEMISTRY OF MATERIALS,2017.
APA	Wang, Jin-Liang.,Liu, Kai-Kai.,Liu, Sha.,Xiao, Fei.,Chang, Zheng-Feng.,...&Cao, Yong.(2017).Donor End-Capped Hexafluorinated Oligomers for Organic Solar Cells with 9.3% Efficiency by Engineering the Position of pi-Bridge and Sequence of Two-Step Annealing.CHEMISTRY OF MATERIALS.
MLA	Wang, Jin-Liang,et al."Donor End-Capped Hexafluorinated Oligomers for Organic Solar Cells with 9.3% Efficiency by Engineering the Position of pi-Bridge and Sequence of Two-Step Annealing".CHEMISTRY OF MATERIALS (2017).