Control of Mesoscale Morphology and Photovoltaic Performance in Diketopyrrolopyrrole-Based Small Band Gap Terpolymers

	Control of Mesoscale Morphology and Photovoltaic Performance in Diketopyrrolopyrrole-Based Small Band Gap Terpolymers
	Ye, Long 1,2,3; Jiao, Xuechen 2,3; Zhang, Shaoqing 1; Yao, Huifeng 1; Qin, Yunpeng 1; Ade, Harald 2,3; Hou, Jianhui 1
刊名	ADVANCED ENERGY MATERIALS
	2017-02-08
卷号	7 期号:3
关键词	Diketopyrrolopyrrole Domain Purity Domain Size Small Band Gap Terpolymers
英文摘要	Morphology control is one of the key strategies in optimizing the performance of organic photovoltaic materials, particularly for diketopyrrolopyrrole (DPP)-based donor polymers. The design of DPP-based polymers that provide high power conversion efficiency (PCE) presents a significant challenge that requires optimization of both energetics and morphology. Herein, a series of high performance, small band gap DPP-based terpolymers are designed via two-step side chain engineering, namely introducing alternating short and long alkyls for reducing the domain spacing and inserting alkylthio for modulating the energy levels. The new DPP-based terpolymers are compared to delineate how the side chain impacts the mesoscale morphology. By employing the alkylthio-substituted terpolymer PBDPP-TS, the new polymer solar cell (PSC) device realizes a good balance of a high V-oc of 0.77 V and a high J(sc) over 15 mA cm(-2), and thus realizes desirable PCE in excess of 8% and 9.5% in single junction and tandem PSC devices, respectively. The study indicates better control of domain purity will greatly improve performance of single junction DPP-based PSCs toward 10% efficiency. More significantly, the utility of this stepwise side chain engineering can be readily expanded to other classes of well-defined copolymers and triggers efficiency breakthroughs in novel terpolymers for photovoltaic and related electronic applications.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38107]
专题	化学研究所_高分子物理与化学实验室
作者单位	1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China 2.North Carolina State Univ, Dept Phys & Organ, Raleigh, NC 27695 USA 3.North Carolina State Univ, Carbon Elect Lab ORaCEL, Raleigh, NC 27695 USA
推荐引用方式 GB/T 7714	Ye, Long,Jiao, Xuechen,Zhang, Shaoqing,et al. Control of Mesoscale Morphology and Photovoltaic Performance in Diketopyrrolopyrrole-Based Small Band Gap Terpolymers[J]. ADVANCED ENERGY MATERIALS,2017,7(3).
APA	Ye, Long.,Jiao, Xuechen.,Zhang, Shaoqing.,Yao, Huifeng.,Qin, Yunpeng.,...&Hou, Jianhui.(2017).Control of Mesoscale Morphology and Photovoltaic Performance in Diketopyrrolopyrrole-Based Small Band Gap Terpolymers.ADVANCED ENERGY MATERIALS,7(3).
MLA	Ye, Long,et al."Control of Mesoscale Morphology and Photovoltaic Performance in Diketopyrrolopyrrole-Based Small Band Gap Terpolymers".ADVANCED ENERGY MATERIALS 7.3(2017).