Acta Phys. -Chim. Sin. ›› 2008, Vol. 24 ›› Issue (05): 905-908.doi: 10.3866/PKU.WHXB20080530

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Annealing Treatment Effect on Photoelectric Properties of P3HT:PCBMBlend System

YU Huang-Zhong; PENG Jun-Biao   

  1. School of Physics, South China University of Technology, Guangzhou 510640, P. R. China; 2Key Laboratory of Specially Functional Materials, Ministry of Education, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China
  • Received:2008-01-14 Revised:2008-02-25 Published:2008-05-05
  • Contact: YU Huang-Zhong

Abstract: The effect of annealing treatment on the photoelectric properties of poly(3-hexylthiophene) (P3HT):[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) was analyzed by UV-Vis absorption spectroscopy, photoluminescence (PL) spectroscopy, X-ray diffraction, and solar cell performance. The UV-Vis absorption peaks of P3HT:PCBM thin filmshowed enhancement and a red-shift after thermal annealing. PL and XRD peak intensities increased by annealing treatment. A solar cell based on the blend of P3HT:PCBM was fabricated, and the device performance was significantly improved by thermal annealing. For devices heat-treated at 130 益, open circuit voltage of 0.55 V, short circuit current density of 9.87 mA·cm-2, fill factor of 60.1% and power conversion efficiency (PCE) of 3.26% were achieved under 100 mW·cm-2 air-mass 1.5 solar simulator illumination.

Key words: Annealing treatment, Polymer, Photoelectric properties, Blend system


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