Cooperative effects of solvent and polymer acceptor co-additives in P3HT:PDI solar cells: simultaneous optimization in lateral and vertical phase separation

doi:10.1039/c3cp55075c

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	Cooperative effects of solvent and polymer acceptor co-additives in P3HT:PDI solar cells: simultaneous optimization in lateral and vertical phase separation
	Li, Mingguang 1,2; Wang, Lei 1,2; Liu, Jiangang 1,2; Zhou, Ke 1,2; Yu, Xinhong 1,2; Xing, Rubo 1,2; Geng, Yanhou 1,2; Han, Yanchun 1,2
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2014
卷号	16 期号:10 页码:4528-4537
ISSN号	1463-9076
DOI	10.1039/c3cp55075c
英文摘要	In this work, solvent chloronaphthalene (CN) and polymer acceptor an alternating copolymer of perylene diimide and carbazole (PCPDI) were utilized as co-additives to optimize the nanoscale phase-separated morphology and photovoltaic properties of bulk-heterojunction (BHJ) polymer solar cells based on the poly(3-hexyl thiophene) (P3HT)/N,N'-bis(1-ethylpropyl)-perylene-3,4,9,10-tetracarboxylic diimide (EP-PDI) system. The domain size of EP-PDI molecules together with that of P3HT distinctly decreased by adding a 0.75 vol% CN additive. The optimized lateral phase separation increased the donor-acceptor interfacial area and facilitated the exciton dissociation process, leading to 5-fold enhancement of short-circuit current (J(SC)). Furthermore, when PCPDI was employed as a co-additive, acceptor materials (including PCPDI and EP-PDI) were prone to aggregation towards the top surface of blend films, improving vertical phase separation of active layers. PCPDI incorporation, which improved the percolation pathways for electron carriers, suppressed the crystallinity of P3HT distinctly. Thus, much more balanced charge transport was achieved by PCPDI addition, which resulted in almost 1-fold enhancement of open-circuit voltage (V-OC) by reducing nongeminate recombination. As a consequence, cooperative effects of CN and PCPDI additives improved the nanoscale phase-separated morphology in lateral and vertical directions simultaneously, achieving the enhancement in both V-OC and J(SC).
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000332393200012
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/52153]
专题	中国科学院化学研究所
通讯作者	Han, Yanchun
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Mingguang,Wang, Lei,Liu, Jiangang,et al. Cooperative effects of solvent and polymer acceptor co-additives in P3HT:PDI solar cells: simultaneous optimization in lateral and vertical phase separation[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2014,16(10):4528-4537.
APA	Li, Mingguang.,Wang, Lei.,Liu, Jiangang.,Zhou, Ke.,Yu, Xinhong.,...&Han, Yanchun.(2014).Cooperative effects of solvent and polymer acceptor co-additives in P3HT:PDI solar cells: simultaneous optimization in lateral and vertical phase separation.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,16(10),4528-4537.
MLA	Li, Mingguang,et al."Cooperative effects of solvent and polymer acceptor co-additives in P3HT:PDI solar cells: simultaneous optimization in lateral and vertical phase separation".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16.10(2014):4528-4537.