...
首页> 外文期刊>Journal of Crystal Growth >The effects of rapid thermal annealing on doubled quantum dots grown by molecular beam epitaxy
【24h】

The effects of rapid thermal annealing on doubled quantum dots grown by molecular beam epitaxy

机译:快速热退火对分子束外延生长的双量子点的影响

获取原文
获取原文并翻译 | 示例
           

摘要

The effects of different rapid thermal annealing temperatures on the optical properties of inAs double quantum dots (DQDs) grown by molecular beam epitaxy using a partial-capping-and-regrowth process have been investigated. Improvement of the material quality is indicated by enhanced photolumines-cence (PL) intensity and narrower PL linewidth. The blueshift of the PL emission peak with increasing annealing temperature is due to the interdiffusion of group Ml atoms during the annealing process, which is confirmed by the temperature dependence of the PL peak position. Thermal quenching of the PL intensity is observed at temperature over 110 K, and the main activation energy decreases with annealing temperature, consistent with a reduced confining potential from the interdiffusion of group III atoms. All of these results are similar to those of single quantum dots reported in the literature.
机译:研究了不同的快速热退火温度对通过分子束外延使用部分封盖和再生长过程生长的inAs双量子点(DQDs)光学性能的影响。增强的光致发光(PL)强度和更窄的PL线宽表明了材料质量的提高。 PL发射峰的蓝移随退火温度的升高是由于在退火过程中基团M1原子的相互扩散,这由PL峰位置的温度依赖性证实。在超过110 K的温度下观察到PL强度的热淬灭,并且主活化能随退火温度而降低,这与III族原子相互扩散引起的限制电位降低是一致的。所有这些结果与文献中报道的单个量子点的结果相似。

著录项

  • 来源
    《Journal of Crystal Growth》 |2009年第7期|1791-1794|共4页
  • 作者单位

    Department of Electrical and Computer Engineering, University of California San Diego, La folia, CA 92093-0407, USA Department of Electrical Engineering Chulalongkorn University, Phayathai Road, Patumwan, Bangkok 10330, Thailand Kagami Memorial Laboratory for Material Science and Technology, Waseda University, Tokyo 169-0051, Japan;

    Department of Electrical and Computer Engineering, University of California San Diego, La folia, CA 92093-0407, USA;

    Department of Electrical and Computer Engineering, University of California San Diego, La folia, CA 92093-0407, USA;

    Kagami Memorial Laboratory for Material Science and Technology, Waseda University, Tokyo 169-0051, Japan;

    Department of Electrical Engineering Chulalongkorn University, Phayathai Road, Patumwan, Bangkok 10330, Thailand;

    Department of Electrical and Computer Engineering, University of California San Diego, La folia, CA 92093-0407, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    double quantum dot; rapid thermal annealing; molecular beam epitaxy;

    机译:双量子点快速热退火;分子束外延;

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