PEG对TiO_2薄膜光电特性的影响

摘要研究添加第三组分对TiO2光电特性的调节规律对于研制新型气敏材料、太阳能电池等具有重要意义。本文采用溶胶-凝胶技术制备了添加聚乙二醇(PEG)的TiO2薄膜,研究了PEG的添加对晶体型态、表面形貌和半导体特性等的影响。结果表明,PEG的添加量与相对分子质量对TiO2薄膜的透光性有明显影响,添加PEG2000(2000为PEG的相对分子质量)的TiO2薄膜在350℃时对CO的气敏性达到3.5,这种p-型TiO2薄膜材料在太阳能电池、气敏传感器等领域有广阔的应用前景。

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	王保国
	李雅鹏
	李韡
	王素梅

关键词：聚乙二醇 TiO2

Abstract： Effects of the foreign atoms on the electrical and optical property of titania films are fundamental to explore novel gas-sensing and solar cell materials.The polyethylene glycol(PEG)-doped TiO_2 films is prepared using the sol-gel method and the microstructure,crystallite morphology and semiconductor property of the films is characterized.The transmittance of the TiO_2 film depended on the content and the molecular weight of the PEG additive.The PEG2000-doped TiO_2 film showed a high gas response to CO at 350 ℃.This p-type PEG2000-doped TiO_2 film has potential applications to develop solar cells and gas sensors.

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Received 2006-05-15; published 2006-05-15

引用本文:

王保国;李雅鹏;李韡;王素梅;.PEG对TiO_2薄膜光电特性的影响[J]. 化学工业与工程, 2006,23(3): 203-205

WANG Bao-guo,LI Ya-peng,LI Wei,WANG Su-mei.Effects of PEG on the Optical and Electrical Property of TiO_2 Film[J]. Chemcial Industry and Engineering, 2006,23(3): 203-205