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  • 文献标题:   Broadband Light-Induced Absorbance Change in Multilayer Graphene
  • 文献类型:   Article
  • 作　　者:   OBRAZTSOV PA, RYBIN MG, TYURNINA AV, GARNOV SV, OBRAZTSOVA ED, OBRAZTSOV AN, SVIRKO YP
  • 作者关键词:   graphene, pump probe, ultrafast optic, carrier dynamic, auger scattering, saturable absorption
  • 出版物名称:   NANO LETTERS
  • ISSN:   1530-6984 EI 1530-6992
  • 通讯作者地址:   Univ Eastern Finland
  • 被引频次:   67
  • DOI:   10.1021/nl104303c
  • 出版年:   2011

▎ 摘　　要

We report the ultrafast light-induced absorbance change in CVD-grown rnultilayer grapheme. Using femtosecond pump probe measurements in 1100-1800 nm spectral range, we revealed broadband absorbance change when the probe photon energy was higher than that of the pump photon. The observed phenomenon is interpreted in terms of the Auger recombination and impact ionization playing a significant role in the dynamics of photoexcited carriers in graphene.