Title of article
Bulk heterojunctions based on a low band gap copolymer of thiophene and benzothiadiazole
Author/Authors
Bundgaard، نويسنده , , Eva and Shaheen، نويسنده , , Sean E. and Krebs، نويسنده , , Frederik C. and Ginley، نويسنده , , David S.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
7
From page
1631
To page
1637
Abstract
We report on the incorporation of a low band gap copolymer based on thiophene and benzothiadiazole with a band gap of 1.65 eV into a bulk heterojunction device with the structure ITO/PEDOT:PSS/polymer:PCBM/Al. We have investigated the effects of process variable, including choice of solvent, polymer concentration and annealing temperature, on the photovoltaic device performance. The devices show spectral response down to the absorption edge of 1.65 eV and exhibit an efficiency of 1% under AM1.5 illumination and a peak external quantum efficiency of 18% at 600 nm.
Keywords
Organic photovoltaic , Device optimization , Low band gap polymers , efficiency
Journal title
Solar Energy Materials and Solar Cells
Serial Year
2007
Journal title
Solar Energy Materials and Solar Cells
Record number
1481522
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