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

被引：16

作者：

Bonoldi, Lucia ^{[2
]}

Calabrese, Anna ^{[1
,3
]}

Pellegrino, Andrea ^{[1
]}

Perin, Nicola ^{[1
]}

Po, Riccardo ^{[1
]}

Spera, Silvia ^{[1
]}

Tacca, Alessandra ^{[1
]}

机构：

[1] ENI SpA, Res Ctr Non Convent Energies, Ist Eni Donegani, I-28100 Novara, Italy

[2] ENI SpA, Refining & Mkt Div Res Ctr, I-28100 Novara, Italy

[3] Univ Catania, Scuola Super Catania, I-95123 Catania, Italy

来源：

JOURNAL OF MATERIALS SCIENCE | 2011年 / 46卷 / 11期

关键词：

ORGANIC SOLAR-CELLS; ALTERNATING POLYFLUORENE COPOLYMERS; DONOR-ACCEPTOR COPOLYMERS; OPEN-CIRCUIT VOLTAGE; CONJUGATED POLYMERS; SUZUKI POLYCONDENSATION; CONVERSION EFFICIENCY; DEVICES; UNITS; PERFORMANCE;

D O I：

10.1007/s10853-011-5321-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new family of 9,9-bisalkylfluorene (F)/thiophene (T)/benzothiadiazole (B) pi-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.

引用

页码：3960 / 3968

页数：9

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