Polymer solar cells based on D-A low bandgap copolymers containing fluorinated side chains of thiadiazoloquinoxaline acceptor and benzodithiophene donor units

doi:10.1039/c7nj03981f

CORC > 化学研究所 > 中国科学院化学研究所

	Polymer solar cells based on D-A low bandgap copolymers containing fluorinated side chains of thiadiazoloquinoxaline acceptor and benzodithiophene donor units
	Keshtov, M. L.1; Kuklin, S. A.1; Khokhlov, A. R.1; Konstantinov, I. O.1; Nekrasova, N. V.2; Xie, Zhi-yuan 3; Biswas, Subhayan 4; Sharma, Ganesh D.4
刊名	NEW JOURNAL OF CHEMISTRY
	2018-02-07
卷号	42 期号:3 页码:1626-1633
ISSN号	1144-0546
DOI	10.1039/c7nj03981f
英文摘要	Three ultralow-bandgap D-A copolymers (P0F, P2F and P4F) based on fluorene-substituted thiadiazoloquinoxaline acceptor and BDT donor units were synthesized and characterized. The effect of the number of fluorine atoms substituted in the fluorene side chain on the optical, electrochemical, crystalline and photovoltaic properties of copolymers was compared. The results showed that the optical properties and lowest unoccupied molecular orbital energy levels of the copolymers are almost the same with an increase in fluorine atoms in the side chain, while the highest occupied molecular orbital (HOMO) energy level is shifted downward. P4F and P2F show better light harvesting abilities, higher crystallinities and low-lying HOMO energy levels than those of P0F. These copolymers were used as donors along with PC71BM as an acceptor for the bulk heterojunction polymer solar cells and optimized by adjusting the donor-to-acceptor weight ratios and solvent vapor treatment. Polymer solar cells based on optimized active layers based on P4F and P2F deliver a power conversion efficiency of 8.15% and 6.38%, respectively, which are higher than that of P0F counterpart (5.04%) due to an increase in all photovoltaic parameters, i. e., short circuit current, open circuit voltage and fill factor, and a very low voltage loss of 0.44 eV.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000423702900013
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45539]
专题	中国科学院化学研究所
通讯作者	Keshtov, M. L.; Sharma, Ganesh D.
作者单位	1.Russian Acad Sci, Inst Organoelement Cpds, Vavilova St 28, Moscow 119991, Russia 2.Russian Acad Sci, Inst Phys Chem & Electrochem, LeninskyProspect 31, Moscow 119071, Russia 3.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China 4.LNM Inst Informat Technol, Dept Phys, Jaipur, Rajasthan, India
推荐引用方式 GB/T 7714	Keshtov, M. L.,Kuklin, S. A.,Khokhlov, A. R.,et al. Polymer solar cells based on D-A low bandgap copolymers containing fluorinated side chains of thiadiazoloquinoxaline acceptor and benzodithiophene donor units[J]. NEW JOURNAL OF CHEMISTRY,2018,42(3):1626-1633.
APA	Keshtov, M. L..,Kuklin, S. A..,Khokhlov, A. R..,Konstantinov, I. O..,Nekrasova, N. V..,...&Sharma, Ganesh D..(2018).Polymer solar cells based on D-A low bandgap copolymers containing fluorinated side chains of thiadiazoloquinoxaline acceptor and benzodithiophene donor units.NEW JOURNAL OF CHEMISTRY,42(3),1626-1633.
MLA	Keshtov, M. L.,et al."Polymer solar cells based on D-A low bandgap copolymers containing fluorinated side chains of thiadiazoloquinoxaline acceptor and benzodithiophene donor units".NEW JOURNAL OF CHEMISTRY 42.3(2018):1626-1633.