Impact of Alkyl Side Chains on Optoelectronic and Photovoltaic Properties of Novel Benzodithiophenedione-Based Conjugated Polymers

被引：5
作者：
Akkuratov, Alexander [1 ]
Martinov, Ilya [1 ]
Avilova, Irina [1 ]
Troshin, Pavel [1 ,2 ]
机构：
[1] RAS, IPCP, Academician Semenov Ave 1, Chernogolovka 142432, Moscow Region, Russia
[2] Skolkovo Inst Sci & Technol, Nobel St 3, Moscow 143025, Russia
来源：
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2019年 / 13卷 / 09期
基金：
俄罗斯科学基金会;
关键词：
benzodithiophene-4; 8-dione; benzothiadiazole; conjugated polymers; organic solar cells; photovoltaics; OPEN-CIRCUIT VOLTAGE; ORGANIC SOLAR-CELLS; EFFICIENT; DEGRADATION; ABSORPTION; GENERATION; ENABLES; ORIGIN; UNITS;
D O I：
10.1002/pssr.201900154
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two novel donor-acceptor conjugated polymers comprising benzo[1,2-c:4,5-c ']dithiophene-4,8-dione and an extended TTBTBTT system (thiophene-T, benzothiadiazole-B) with different alkyl side chains are synthesized and investigated. It is found that the length of alkyl side chains has a strong influence on energy levels, film morphology, and charge-carrier mobility of the designed polymers. Organic solar cells based on polymer P2 with bulky 2-hexyldecyl side chains demonstrate significantly improved photovoltaic performances as compared to the devices based on P1 bearing relatively small 2-ethylhexyl solubilizing groups.
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页数：7
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