Ternary Blend Organic Solar Cells Based on P3HT/TT-TTPA/PC61BM

	Ternary Blend Organic Solar Cells Based on P3HT/TT-TTPA/PC61BM
	Cheng Pei 1,2,4; Shi Qinqin 1,2; Zhan Xiaowei 3
刊名	ACTA CHIMICA SINICA
	2015-03-15
卷号	73 期号:3 页码:252-256
关键词	organic solar cells ternary blend P3HT/PC61BM domain purity morphology control
英文摘要	Organic solar cells (OSCs) are a promising cost-effective alternative for utility of solar energy, and possess advantages such as low cost, light weight and flexibility. Much attention has been focused on the development of OSCs (synthesis of new donor or acceptor materials, control of morphology of active layer and fabrication of new device structures) which have seen a dramatic rise in efficiency over the last decade. Since the bulk heterojunction concept was reported in 1995, two-component (binary) blend has been predominant as active layer and achieved great success with power conversion efficiencies (PCEs) up to ca. 10%. Ternary blend of active layer consisting of a donor material, an acceptor material and a third component has received increasing attention in recent five years. The third components include light-absorbing polymers or small molecules, fullerene or non-fullerene acceptors, inorganic nanomaterials (quantum dots, metal nanomaterials or carbon-based nanomaterials) and organic nonvolatile additives (polymers or small molecules). Compared with binary blend, ternary blend may present some advantages: broader and stronger absorption; more efficient charge transfer and charge transport, better morphology and improved stability. In this work, we fabricated ternary blend OSCs based on P3HT/TT-TTPA/PC61BM blend. TT-TTPA is a conjugated small molecule with thiazolothiazole as acceptor unit, triphenyl-amine as donor unit and thiophene as bridge. TT-TTPA has good miscibility with PC61BM and the phase separation scale of TT-TTPA/PC61BM blend is very small. During solvent annealing and thermal annealing, the small amount of TT-TTPA in P3HT domains can move from P3HT domains to PC61BM domains, thus increase the phase purity of P3HT domains that can undergo crystallization. After optimization of the weight ratio of TT-TTPA in ternary blend, we achieved better PCE (4.41%) relative to binary blend (3.85%). Effects of TT-TTPA on absorption, crystallinity and morphology of P3HT:PC61BM blend films were investigated by UV-vis, X-ray diffraction and atomic force microscopy.
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/121111/28603]
专题	化学研究所_有机固体实验室
作者单位	1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China 3.Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing 100871, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cheng Pei,Shi Qinqin,Zhan Xiaowei. Ternary Blend Organic Solar Cells Based on P3HT/TT-TTPA/PC61BM[J]. ACTA CHIMICA SINICA,2015,73(3):252-256.
APA	Cheng Pei,Shi Qinqin,&Zhan Xiaowei.(2015).Ternary Blend Organic Solar Cells Based on P3HT/TT-TTPA/PC61BM.ACTA CHIMICA SINICA,73(3),252-256.
MLA	Cheng Pei,et al."Ternary Blend Organic Solar Cells Based on P3HT/TT-TTPA/PC61BM".ACTA CHIMICA SINICA 73.3(2015):252-256.