Synthesis and photovoltaic properties of new donor-acceptor (D-A) copolymers based on benzo[1,2-b:3,4-b ':6,5-b ''] trithiophene donor and different acceptor units (P1 and P2)

doi:10.1039/c4ra05680a

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	Synthesis and photovoltaic properties of new donor-acceptor (D-A) copolymers based on benzo[1,2-b:3,4-b ':6,5-b ''] trithiophene donor and different acceptor units (P1 and P2)
	Keshtov, M. L.1; Deng, Y.2; Xie, Z.2; Geng, Y.2; Kuklin, S. A.1; Kochurov, V. S.3; Khokhlov, A. R.1; Koukaras, E. N.4,5; Sharma, G. D.6
刊名	RSC ADVANCES
	2014
卷号	4 期号:96 页码:53531-53542
ISSN号	2046-2069
DOI	10.1039/c4ra05680a
英文摘要	Two new conjugated D-A copolymers P1 (PBTT-TQ) and P2 (PBTT-TPz) based on the same benzo[1,2-b:3,4-b':6,5-b ''] trithiophene (BTT) donor and different acceptor monomers 4,9-bis(5-bromithiophen-2-yl)-6,7-bis(2-ethylhexyl)[1,2,5] thiadiazolo[3,4-g] quinoxaline (TQ) and 5,7-bis(5-bromothiophen-2-yl)-2,3-bis(5-octylthiophen-2-yl) thieno[3,4-b] pyrazine (TPy), respectively, were synthesized by Stille cross-coupling reaction and characterized by gel permeation chromatography (GPC), H-1 NMR, UV-Vis absorption, thermal analysis and electrochemical cyclic voltammetry (CV) tests. The optical bandgaps of P1 and P2 measured from the onset of optical absorption of these copolymers in thin films were 1.14 eV and 1.38 eV, respectively. Photovoltaic properties of the bulk heterojunction (BHJ) devices were studied using P1 and P2 as the donor and PC61BM or PC71BM as the acceptor with weight ratios of polymer : PC61BM of 1 : 1, 1 : 2 and 1 : 3. The optimized photovoltaic devices fabricated with active blend layers of P1:PC71BM (1 : 2) and P2: PC71BM (1 : 2) cast from o-diclorobenzene (o-DCB) showed PCEs of 2.05% and 3.14%, respectively, whereas P2: PC61BM and P2: PC71BM yielded PCEs of 1.44% and 2.11%, respectively. The PCEs of BHJ solar cells based on P1: PC71BM and P2: PC71BM processed from 1-chloronapthanene (CN)/o-DCB solvent were further improved up to 5.28% and 2.6%, respectively.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000344468800019
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/51135]
专题	中国科学院化学研究所
通讯作者	Keshtov, M. L.
作者单位	1.Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, Moscow 119991, Russia 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 3.Moscow MV Lomonosov State Univ, Fac Phys, Moscow, Russia 4.Univ Patras, Dept Phys, Mol Engn Lab, GR-26500 Patras, Greece 5.Fdn Res & Technol Hellas FORTH ICE HT, Inst Chem Engn Sci, Patras 26504, Greece 6.Jaipur Engn Coll, JEC Grp Coll, R&D Ctr Engn & Sci, Jaipur 303101, Rajasthan, India
推荐引用方式 GB/T 7714	Keshtov, M. L.,Deng, Y.,Xie, Z.,et al. Synthesis and photovoltaic properties of new donor-acceptor (D-A) copolymers based on benzo[1,2-b:3,4-b ':6,5-b ''] trithiophene donor and different acceptor units (P1 and P2)[J]. RSC ADVANCES,2014,4(96):53531-53542.
APA	Keshtov, M. L..,Deng, Y..,Xie, Z..,Geng, Y..,Kuklin, S. A..,...&Sharma, G. D..(2014).Synthesis and photovoltaic properties of new donor-acceptor (D-A) copolymers based on benzo[1,2-b:3,4-b ':6,5-b ''] trithiophene donor and different acceptor units (P1 and P2).RSC ADVANCES,4(96),53531-53542.
MLA	Keshtov, M. L.,et al."Synthesis and photovoltaic properties of new donor-acceptor (D-A) copolymers based on benzo[1,2-b:3,4-b ':6,5-b ''] trithiophene donor and different acceptor units (P1 and P2)".RSC ADVANCES 4.96(2014):53531-53542.