Conjugated polymers with benzothiadiazole and benzotriazole moieties for polymer solar cells

被引：18
|
作者：
Keles, Duygu [1 ]
Erer, Mert Can [2 ]
Bolayir, Eda [2 ]
Cevher, Sevki Can [2 ]
Hizalan, Gonul [3 ]
Toppare, Levent [1 ,2 ,3 ,4 ]
Cirpan, Ali [1 ,2 ,3 ,5 ]
机构：
[1] Middle East Tech Univ, Dept Polymer Sci & Technol, TR-06800 Ankara, Turkey
[2] Middle East Tech Univ, Dept Chem, TR-06800 Ankara, Turkey
[3] Middle East Tech Univ, Ctr Solar Energy Res & Applicat GUNAM, TR-06800 Ankara, Turkey
[4] Middle East Tech Univ, Dept Biotechnol, TR-06800 Ankara, Turkey
[5] Middle East Tech Univ, Dept Micro & Nanotechnol, TR-06800 Ankara, Turkey
来源：
RENEWABLE ENERGY | 2019年 / 139卷
关键词：
Organic solar cells; Conjugated polymers; Benzodithiophene; Benzothiadiazole and benzotriazole; OPEN-CIRCUIT VOLTAGE; FLUORINE SUBSTITUENTS; MORPHOLOGY; PERFORMANCE; ACCEPTOR; SELENOPHENE; COPOLYMERS; EFFICIENCY; BANDGAP; SILAFLUORENE;
D O I：
10.1016/j.renene.2019.03.018
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study four novel random polymers, comprising benzothiadiazole and benzotriazole as the accepting units and benzodithiophene as the donor unit, were synthesized via Stille polymerization reaction. Moreover, effects of fluorine atom and pi bridges on optical, electrochemical and optoelectronic properties were investigated. Optical band gap values of P1, P2, P3 and P4 were found as 1.78 eV, 1.72 eV, 1.63 eV and 1.73 eV, respectively. Characterization of polymers via IJV Vis NIR spectroscopy, cyclic voltammetry (CV), gel permeation chromatography (GPC) and thermal analysis were carried out. Polymer solar cells (PSCs) were constructed and characterized in N-2 filled glove box. While the polymers act as electron donors, PC71BM was the electron acceptor in the PSCs with the device structure of ITO/PEDOT:PSS/Polymer:PC71BM/LiF/Al. As a consequence of measurements under standard AM 1.5 G illumination (100 mW/cm(2)), the highest power conversion efficiency values were recorded as 4.10% 3.84%, 1.60% and 3.83% for P1, P2, P3 and P4 based PSCs, respectively. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1184 / 1193
页数：10
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