首页> 外文会议>Nitride semiconductors >PHOTOQUENCHING OF PERSISTENT PHOTOCONDUCTIVITY IN N-TYPE GaN
【24h】

PHOTOQUENCHING OF PERSISTENT PHOTOCONDUCTIVITY IN N-TYPE GaN

机译:N型GaN的持久光导率的光猝灭。

获取原文
获取原文并翻译 | 示例

摘要

We report on the observation of optical quenching of persistent photoconductivity (PPC) in unintentionally doped n-type GaN films. The PPC is induced by subbandgap illumination between room temperature and 77K. The corresponding decay, which is thermally activated, is substantially increased upon low energy illumination, e.g. illumination by wavelengths between 1050nm and 700nm. We measure the saturation conductivity under simultaneous illumination with excitation and quenching light and find that some wavelengths can induce both excitation and quenching of photoconductivity. Additionally, we present a preliminary investigation of the spectral dependence of the quenching effect. A simulation indicates only a weak spectral dependence of the quenching cross-sections in the wavelength range from 470nm-1050nm.
机译:我们报告了在无意掺杂的n型GaN膜中对持久光电导(PPC)的光学猝灭的观察结果。 PPC是由室温和77K之间的子带隙照明引起的。在例如低能照明等情况下,热激活的相应衰减会大大增加。 1050nm至700nm之间的波长照明。我们在激发和猝灭光的同时照射下测量饱和电导率,发现某些波长可以诱导光导性的激发和猝灭。另外,我们对淬灭作用的光谱依赖性进行了初步研究。模拟表明,在470nm-1050nm的波长范围内,淬火截面的光谱依赖性很小。

著录项

  • 来源
    《Nitride semiconductors》|1997年|531-536|共6页
  • 会议地点 Boston MA(US)
  • 作者单位

    Department of Physics, University of Oldenburg, D-26111 Oldenburg, Germany;

    Department of Physics, University of Oldenburg, D-26111 Oldenburg, Germany;

    Department of Physics, University of Oldenburg, D-26111 Oldenburg, Germany;

    Department of Physics, University of Oldenburg, D-26111 Oldenburg, Germany;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA;

    Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA Department of Materials Science and Mineral Engineering, University of California, Berkeley, California 94720, USA;

    Walter Schottky Institute, Technical University Munich, D-85748 Garching, Germany;

    Walter Schottky Institute, Technical University Munich, D-85748 Garching, Germany;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 材料;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号