Photoinduced charge transfer and efficient solar energy conversion in a blend of a red polyfluorene copolymer with CdSe nanoparticles

被引：143

作者：

Wang, Peng

Abrusci, Agnese

Wong, Henry M. P.

Svensson, Mattias

Andersson, Mats R.

Greenham, Neil C.

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] Chalmers Univ Technol, S-41296 Gothenburg, Sweden

来源：

NANO LETTERS | 2006年 / 6卷 / 08期

关键词：

D O I：

10.1021/nl061085q

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present measurements of charge transfer and the photovoltaic effect in a blend of the alternating polyfluorene copolymer poly(2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)) with branched CdSe nanoparticles. Quasi-steady-state photoinduced absorption measurements identified a long-lived charged species that formed after photoexcitation at room temperature. Photovoltaic devices based on this blend system showed a spectral response extending to 650 nm and gave a solar power conversion efficiency of 2.4% under Air Mass 1.5 Global (AM1.5G) conditions.

引用

页码：1789 / 1793

页数：5

共 44 条

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