Rectifying effect of heterojunction fabricated in freestanding thin film of polyaniline containing azobenzene side-chain
Yin Zhi-Hua(尹志华)a), Long Yun-Ze(龙云泽)a)†, Huang Kun(黄琨)b), Wan Mei-Xiang(万梅香)b), and Chen Zhao-Jia(陈兆甲)c)
a College of Physics Science, Qingdao University, Qingdao 266071, China; b Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; c Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Abstract An innovative heterojunction is fabricated between two sides of a freestanding thin film of HCl-doped polyaniline (PANI) derivative containing azobenzene side-chain, which is synthesized through an N-alkyl-substituted reaction. Of the film, the side with being irradiated by UV light during preparation is represented as `A side'; the other side without being irradiated is represented as `N side'. The electrical properties of the heterojunction are measured and the rectifying effect is observed in the {current--voltage} characteristic curves with the values of rectifying ratio ($\gamma$) being 20 at ±0.06 V at T= 77K and 4 at ±0.02V at T=300 K separately.
Received: 15 May 2008
Revised: 12 August 2008
Accepted manuscript online:
(Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials)
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 10604038) and the
Program for New Century Excellent Talents in University, China
(Grant No NCET-07-0472).
Cite this article:
Yin Zhi-Hua(尹志华), Long Yun-Ze(龙云泽), Huang Kun(黄琨), Wan Mei-Xiang(万梅香), and Chen Zhao-Jia(陈兆甲) Rectifying effect of heterojunction fabricated in freestanding thin film of polyaniline containing azobenzene side-chain 2009 Chin. Phys. B 18 298
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