首页> 外文期刊>Physical review >Hot carrier diffusion in graphene
【24h】

Hot carrier diffusion in graphene

机译:石墨烯中热载流子扩散

获取原文
获取原文并翻译 | 示例
           

摘要

We report an optical study of charge transport in graphene. Diffusion of hot carriers in epitaxial graphene and reduced graphene-oxide samples are studied using an ultrafast pump-probe technique with a high spatial resolution. Spatiotemporal dynamics of hot carriers after a pointlike excitation are monitored. Carrier-diffusion coefficients of 11 000 and 5500 cm~2 s~(-1) are measured in epitaxial graphene and reduced graphene-oxide samples, respectively, with a carrier temperature on the order of 3600 K. The demonstrated optical techniques can be used for noncontact and noninvasive in situ detection of transport properties of graphene.
机译:我们报告了石墨烯中电荷传输的光学研究。使用具有高空间分辨率的超快泵浦探针技术研究了热载流子在外延石墨烯和还原型石墨烯氧化物样品中的扩散。监测点状激发后热载流子的时空动力学。在外延石墨烯和还原石墨烯氧化物样品中,载流子扩散系数分别为11000和5500 cm〜2 s〜(-1),载流子温度约为3600K。可以使用已证明的光学技术用于石墨烯的传输特性的非接触式和非侵入性原位检测。

著录项

  • 来源
    《Physical review》 |2010年第19期|p.195414.1-195414.5|共5页
  • 作者单位

    Department of Physics and Astronomy, The University of Kansas, Lawrence, Kansas 66045, USA;

    Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore;

    Department of Physics and Astronomy, The University of Kansas, Lawrence, Kansas 66045, USA;

    Department of Physics and Astronomy, The University of Kansas, Lawrence, Kansas 66045, USA;

    Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore;

    Department of Physics and Astronomy, The University of Kansas, Lawrence, Kansas 66045, USA;

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