• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Accurate determination of the size distribution of Si nanocrystals from PL spectra
【24h】

Accurate determination of the size distribution of Si nanocrystals from PL spectra

机译：精确测定PL光谱Si纳米晶体尺寸分布

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Narrow size distribution of quantum dots (QDs) is needed for their application in photovoltaics but collection of such information is difficult. Many experiments have shown the photoluminescence (PL) spectrum of Si QDs will broaden and peak position is size dependent. However, there is still lack of quantitative analysis of such phenomenon. In this paper, a model is developed to fit the PL spectrum based on spontaneous emission and the size distribution of the QDs. With this model, we can quantitatively analyse the QD size and its distribution using the PL spectra only, saving the need of time consuming and destructive characterization methods such as transmission electron microscopy (TEM). The optical bandgap can be extracted naturally from this PL model. The size and distribution of the QD which are obtained by fitting the PL spectra are then confirmed by measurements using TEM and XRD.
机译：在光伏的应用中，需要窄尺寸分布量子点（QDS），但难以收集这些信息。 许多实验表明，Si QD的光致发光（PL）谱将宽大，峰值位置尺寸取决于尺寸。 然而，仍然缺乏对这种现象的定量分析。 在本文中，开发了一种模型以基于自发发射和QD的尺寸分布来适合PL光谱。 利用该模型，我们只能使用PL光谱定量分析QD尺寸及其分布，从而节省了诸如透射电子显微镜（TEM）的耗时和破坏性表征方法的需要。 光学带隙可以自然地从该PL模型中提取。 然后通过使用TEM和XRD通过测量来确认通过拟合PL光谱获得的QD的尺寸和分布。

著录项

  • 来源
    《RSC Advances》 |2015年第68期|共7页
  • 作者

    Jia Xuguang; Zhang Pengfei; Lin Ziyun; Anthony Rebecca; Kortshagen Uwe; Huang Shujuan; Puthen-Veettil Binesh; Conibeer Gavin; Perez-Wurfl Ivan;

  • 作者单位

    Univ New S Wales Sch Photovolta &

    Renewable Energy Engn Sydney NSW 2052 Australia;

    Univ New S Wales Sch Photovolta &

    Renewable Energy Engn Sydney NSW 2052 Australia;

    Univ New S Wales Sch Photovolta &

    Renewable Energy Engn Sydney NSW 2052 Australia;

    Univ Minnesota Dept Mech Engn Minneapolis MN 55455 USA;

    Univ Minnesota Dept Mech Engn Minneapolis MN 55455 USA;

    Univ New S Wales Sch Photovolta &

    Renewable Energy Engn Sydney NSW 2052 Australia;

    Univ New S Wales Sch Photovolta &

    Renewable Energy Engn Sydney NSW 2052 Australia;

    Univ New S Wales Sch Photovolta &

    Renewable Energy Engn Sydney NSW 2052 Australia;

    Univ New S Wales Sch Photovolta &

    Renewable Energy Engn Sydney NSW 2052 Australia;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 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