Dynamic process of photovoltaic effect in La0.9Sr0.1MnO3/SrNb0.01Ti0.99O3 heterojunction

被引：7

作者：

Liao, Leng ^{[1
]}

Jin, Kui-juan ^{[1
]}

Lu, Hui-bin ^{[1
]}

Han, Peng ^{[1
]}

He, Meng ^{[1
]}

Yang, Guo-zhen ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2009年 / 149卷 / 23-24期

基金：

中国国家自然科学基金;

关键词：

Heterojunction; Photoconductivity and photovoltaics;

D O I：

10.1016/j.ssc.2009.03.029

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

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.

引用

页码：915 / 918

页数：4

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