Benzotrithiophene and benzodithiophene-based polymers for efficient polymer solar cells with high open-circuit voltage

文献信息

发布日期 2013-03-22

DOI 10.1039/C3PY00251A

影响因子 5.582

作者

Guobing Zhang, Jianyu Yuan, Jingxuan Ma, Hongbo Lu, Longzhen Qiu, Wanli Ma

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摘要

Two new conjugated polymers based on benzodithiophene (BDT) and alkyl-benzotrithiophene (alkyl-BTT, P1), or acyl-benzotrithiophene (acyl-BTT, P2) were synthesized by a Stille cross-coupling reaction. The polymers were characterized by gel permeation chromatography (GPC), ultraviolet-visible (UV-vis) absorption as well as electrochemical cyclic voltammetry (CV) tests. Compared to the alkyl-BTT-based polymer (P1), the acyl-BTT-based polymer (P2) displayed a lower optical bandgap and a lower HOMO energy level. Polymer solar cells (PSCs) also confirmed that P2-based devices possessed better photovoltaic properties than those of P1-based devices. The optimized photovoltaic devices were fabricated with an active layer of a blend P2 and PC71BM using 2 vol% 1,8-diiodooctane (DIO) as a solvent additive, and a PCE of 4.20% was obtained, with a Voc as high as 0.96 V under AM 1.5G illumination at 100 mW cm−2 with a solar simulator.

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来源期刊

Polymer Chemistry

CiteScore: 8.6

自引率: 7.3%

年发文量: 457

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.

Benzotrithiophene and benzodithiophene-based polymers for efficient polymer solar cells with high open-circuit voltage

文献信息

期刊推荐

相关文献

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Fully bio-based poly(l-lactide)-b-poly(ricinoleic acid)-b-poly(l-lactide) triblock copolyesters: investigation of solid-state morphology and thermo-mechanical properties

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Polymer Chemistry

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