期刊
SOLID STATE COMMUNICATIONS
卷 149, 期 23-24, 页码 915-918出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2009.03.029
关键词
Heterojunction; Photoconductivity and photovoltaics
资金
- National Natural Science Foundation of China
- National Basic Research Program of China
The dynamic process of photoelectric effects in the La0.9Sr0.1MnO3/SrNb0.01Ti0.99O3 heterostructure is theoretically revealed by solving equations consisting of time dependent drift-diffusion, Richardson thermionic emission current, and Shockley-Read-Hall recombination. The calculated time dependent evolution of photovoltage and the variation of carrier concentration are obtained. Present results indicate that a smaller parallel resistance should result in faster photoelectric response, but reduce the peak value of the photovoltage in a La0.9Sr0.1MnO3/SrNb0.01Ti0.99O3 heterojunction. In addition, the increase of the carrier mobilities induced by applying higher energy photons can decrease the rise time but increase the peak value of the photovoltage. Crown Copyright (c) 2009 Published by Elsevier Ltd. All rights reserved.
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