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Importance of non linear piezoelectric effect in Wurtzite Ⅲ-N semiconductors

机译:纤锌矿Ⅲ-N半导体中非线性压电效应的重要性

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摘要

The piezoelectric coefficients of all the binary Ⅲ-N wurtzite semiconductors for both first and second order has been used to evaluate the impact of non linear piezoelectricity on quantum wells and quantum dots of Ⅲ-N materials and its alloys. The often neglected second order coefficients have instead significant effects on the strain induced piezoelectric polarization. The comparison of our predictions with the experimentally obtained values reveals a much better match with the internal piezoelectric fields in quantum wells and superlattices. The impact of our semi empirical approach is quite pronounced in Ⅲ-N quantum dots as the excitonic properties remain highly influenced.
机译:使用所有二阶Ⅲ-N纤锌矿半导体的一阶和二阶压电系数来评估非线性压电对Ⅲ-N材料及其合金的量子阱和量子点的影响。经常被忽略的二阶系数反而对应变感应的压电极化具有重大影响。将我们的预测值与实验获得的值进行比较,发现与量子阱和超晶格中的内部压电场具有更好的匹配性。我们的半经验方法的影响在Ⅲ-N量子点中非常明显,因为激子性质仍然受到很大影响。

著录项

  • 来源
    《Optical and quantum electronics》 |2012年第5期|p.195-203|共9页
  • 作者单位

    School of Electrical and Electronic Engineering, University of Manchester, Manchester, UK;

    School of Electrical and Electronic Engineering, University of Manchester, Manchester, UK;

    School of Electrical and Electronic Engineering, University of Manchester, Manchester, UK;

    School of Electrical and Electronic Engineering, University of Manchester, Manchester, UK;

    Joule Physics Laboratory, School of Computing, Sciences and Engineering,University of Salford, Salford, UK;

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

    piezoelectricity; Ⅲ-nitrides; semiconductors; wurtzite structures;

    机译:压电;Ⅲ-氮化物;半导体;纤锌矿结构;

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