CJCU

Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (12): 1951.

• Articles • Previous Articles     Next Articles

Effect of Substituents on Photovoltaic Properties of Azo Pigment

XIE Teng-Feng1,2, WANG De-Jun1, ZHU Lian-Jie1, LI Tie-Jin1, FEI Hao-Sheng2, ZHOU Xue-Qin3, WANG Mang3   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023;
    2. China Department of Physics, Jilin University, Changchun, 130023, China;
    3. Institute of Polymer Science and Mater ial, Zhejiang University, Hangzhou 310027, China
  • Received:1999-07-13 Online:1999-12-24 Published:1999-12-24

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Abstract: The surface photovoltaic properties of four azo pigments(A, B, C, D) were studied by surface photovoltage spectra (SPS) and field induced surface photovoltage spectra (FISPS). The SPV responses of samples A and D were all enhanced when a negative electric field was applied and were all weaken when a positive voltage was applied. It shows that samples A and D indicate n-type characteristics. On the contrary, samples B and C indicate p-type characteristics. Combining with phase technique and molecular structure of azo pigments, the effect of group on Fermi energy level and conduction type of azo pigments was discussed.

Key words: Surface photovoltaic spectroscopy, Azo pigment, Field induced surface photovoltaic spectroscopy

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