Optical and electronic properties of fluorene/thiophene/benzothiadiazole pseudorandom copolymers for photovoltaic applications

被引：0
作者：
Lucia Bonoldi
Anna Calabrese
Andrea Pellegrino
Nicola Perin
Riccardo Po
Silvia Spera
Alessandra Tacca
机构：
[1] ENI S.p.A,Refining and Marketing Division Research Center
[2] ENI S.p.A,Research Center for non Conventional Energies Istituto Eni Donegani
[3] University of Catania,Scuola Superiore di Catania
来源：
Journal of Materials Science | 2011年 / 46卷
关键词：
Fullerene; Random Copolymer; Polymer Solar Cell; Benzothiadiazole; Lithium Aluminium Hydride;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A new family of 9,9-bisalkylfluorene (F)/thiophene (T)/benzothiadiazole (B) π-conjugated copolymers for organic solar cells is reported. The structure of the reported copolymers is pseudorandom: in turn each F, T, B monomer unit is alternated to the other randomly distributed two units. Voltammetric, UV–visible, and photoluminescence measurements have been carried out to assess the optical and electronic properties of the synthesized materials. The occurring of photoinduced charge transfer towards a fullerene electron acceptor was investigated by photoluminescence quenching and light-induced electron spin resonance experiments. The copolymer having alternating thiophene monomer units and randomly distributed fluorene and benzothiadiazole units exhibits the most promising characteristics; the photophysic study shows that such polymer/fullerene blend could represent a novel and cheaper material to be used as convenient donor–acceptor system for polymer solar cells.
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页码：3960 / 3968
页数：8
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