Enhanced Photovoltaic Performance of Diketopyrrolopyrrole (DPP)-Based Polymers with Extended pi Conjugation

doi:10.1021/jp312450p

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	Enhanced Photovoltaic Performance of Diketopyrrolopyrrole (DPP)-Based Polymers with Extended pi Conjugation
	Zhang, Shaoqing 1,2; Ye, Long 2; Wang, Qi 1,2; Li, Zhaojun 1,2; Guo, Xia 2; Huo, Lijun 2; Fan, Huili 1; Hou, Jianhui 1,2
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2013-05-16
卷号	117 期号:19 页码:9550-9557
ISSN号	1932-7447
DOI	10.1021/jp312450p
英文摘要	To extend the pi conjugation along backbone units is an effective way to tune the optoelectronic properties of conjugated polymers. In this work, to investigate the influence of the extended conjugation on photovoltaic properties of the polymer, we employed a two-step molecular optimization process, and a series of diketopyrrolopyrrole (DPP)-based conjugated polymers, PBDPP-1, PBDPP-2, and PBDPP-3, was prepared and applied in polymer solar cells. After this two-step optimization of molecular structure, the compatibility between the polymer and PC71BM becomes much better; as a result, bicontinuous phase separation with appropriate domain size can be formed in the blend of PBDPP-3/PC71BM. Therefore, the PBDPP-3/PC71BM-based device shows a short circuit current density (J(sc)) of 16.25 mA/cm(2), which is more than two times of that of the PBDPP-1/PC71BM-based device. In addition, the blend films processed by DIO/CB showed smoother surfaces as well as smaller domain size compared with the blend films processed by pure CB. The results in this work indicate that when conjugation of the DPP-polymer's backbone is extended in two dimensions the morphology of the active layers in photovoltaic device can be optimized effectively, and hence the overall efficiency can be improved from 2.83 to 6.18%.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000319649100004
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/54197]
专题	中国科学院化学研究所
通讯作者	Fan, Huili
作者单位	1.Univ Sci & Technol Beijing, Sch Chem & Biol Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Shaoqing,Ye, Long,Wang, Qi,et al. Enhanced Photovoltaic Performance of Diketopyrrolopyrrole (DPP)-Based Polymers with Extended pi Conjugation[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2013,117(19):9550-9557.
APA	Zhang, Shaoqing.,Ye, Long.,Wang, Qi.,Li, Zhaojun.,Guo, Xia.,...&Hou, Jianhui.(2013).Enhanced Photovoltaic Performance of Diketopyrrolopyrrole (DPP)-Based Polymers with Extended pi Conjugation.JOURNAL OF PHYSICAL CHEMISTRY C,117(19),9550-9557.
MLA	Zhang, Shaoqing,et al."Enhanced Photovoltaic Performance of Diketopyrrolopyrrole (DPP)-Based Polymers with Extended pi Conjugation".JOURNAL OF PHYSICAL CHEMISTRY C 117.19(2013):9550-9557.