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Annealed Treatment Effect in Poly(3-hexylthiophene):Methanofullerene Solar Cells |
| YU Huang-Zhong1,2;PENG Jun-Biao1 |
| 1Institute of Polymer Optoelectronic Materials and Devices, Key Lab of Special Functional Materials, South China University of Technology, Guangzhou 5106402School of Physics, South China University of Technology, Guangzhou 510640 |
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| Cite this article: |
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YU Huang-Zhong, PENG Jun-Biao 2008 Chin. Phys. Lett. 25 1411-1414 |
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Abstract Polymer photovoltaic devices based on poly(3-hexylthiophene) (P3HT) : [6,6]-phenyl-C61-butyricacid methyl ester (PCBM) 1:1 weight-ratio blend are reported. The effects of various annealing treatments on the device performance are investigated. Thermal annealing shows significant improvement of the device performances. For devices at 130°C annealing, maximum power conversion efficiency (PCE) of 3.3% and fill factor up to 60.3% is achieved under air mass 1.5, 100mW/cm2 illumination. We discuss the effect of thermal annealing by the results of ultraviolet-visible absorption spectroscopy (UV-vis), dark current-voltage curve, atomic force microscopy (AFM).
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| Keywords:
72.40.+w
72.80.Le
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Received: 07 November 2007
Published: 31 March 2008
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| PACS: |
72.40.+w
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(Photoconduction and photovoltaic effects)
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72.80.Le
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(Polymers; organic compounds (including organic semiconductors))
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