Feasible D1-A-D2-A Random Copolymers for Simultaneous High-Performance Fullerene and Nonfullerene Solar Cells

doi:10.1002/aenm.201702166

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	Feasible D1-A-D2-A Random Copolymers for Simultaneous High-Performance Fullerene and Nonfullerene Solar Cells
	Jeong, Mingyu 1; Chen, Shanshan 1; Lee, Sang Myeon 1; Wang, Zhiwei 2,3; Yang, Yankang 4; Zhang, Zhi-Guo 4; Zhang, Chunfeng 2,3; Xiao, Min 2,3; Li, Yongfang 4; Yang, Changduk 1
刊名	ADVANCED ENERGY MATERIALS
	2018-03-05
卷号	8 期号:7
关键词	Compatibility Fullerene Solar Cells Nonfullerene Solar Cells Random Copolymer Structure-property Relationship
ISSN号	1614-6832
DOI	10.1002/aenm.201702166
英文摘要	A series of PBDB-TTn random donor copolymers is synthesized, consisting of an electron-deficient benzo[1,2-c:4,5-c]dithiophene-4,8-dione (BDD) unit and different ratios of two electron-rich benzo[1,2-b:4,5-b]dithiophene (BDT) and thieno[3,2-b]thiophene (TT) units, with intention to modulate the intrachain and/or interchain interactions and ultimately bulk-heterojunction morphology evolution. A comparative study using 4 x 2 polymer solar cell (PSC) performance maps and each of the [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) and the fused-aromatic-ring-based molecule (m-ITIC) acceptors are carried out. Given the similarities in their absorption ranges and energy levels, the PBDB-TTn copolymers clearly reveal a change in the absorption coefficients upon optimization of the BDT to TT ratio in the backbone. Among the given acceptor combination sets, superior performances are observed in the case of PBDB-TT5 blended with PC71BM (8.34 +/- 0.10%) or m-ITIC (11.10 +/- 0.08%), and the dominant factors causing power conversion efficiency differences in them are found to be distinctly different. For example, the performances of PC71BM-based PSCs are governed by size and population of face-on crystallites, while intermixed morphology without the formation of large phase-separated aggregates is the key factor for achieving high-performance m-ITIC-based PSCs. This study presents a new sketch of structure-morphology-performance relationships for fullerene- versus nonfullerene-based PSCs.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000426603200011
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45663]
专题	中国科学院化学研究所
通讯作者	Yang, Changduk
作者单位	1.UNIST, Dept Energy Engn, Sch Energy & Chem Engn, Perovtron Res Ctr,Low Dimens Carbon Mat Ctr, 50 UNIST Gil, Ulsan 44919, South Korea 2.Nanjing Univ, Natl Lab Solid State Microstruct, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China 3.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China 4.Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Jeong, Mingyu,Chen, Shanshan,Lee, Sang Myeon,et al. Feasible D1-A-D2-A Random Copolymers for Simultaneous High-Performance Fullerene and Nonfullerene Solar Cells[J]. ADVANCED ENERGY MATERIALS,2018,8(7).
APA	Jeong, Mingyu.,Chen, Shanshan.,Lee, Sang Myeon.,Wang, Zhiwei.,Yang, Yankang.,...&Yang, Changduk.(2018).Feasible D1-A-D2-A Random Copolymers for Simultaneous High-Performance Fullerene and Nonfullerene Solar Cells.ADVANCED ENERGY MATERIALS,8(7).
MLA	Jeong, Mingyu,et al."Feasible D1-A-D2-A Random Copolymers for Simultaneous High-Performance Fullerene and Nonfullerene Solar Cells".ADVANCED ENERGY MATERIALS 8.7(2018).