• 文献标题:   Temperature-Dependent Resonance Energy Transfer from Semiconductor Quantum Wells to Graphene
  • 文献类型:   Article
  • 作  者:   YU YJ, KIM KS, NAM J, KWON SR, BYUN H, LEE K, RYOU JH, DUPUIS RD, KIM J, AHN G, RYU S, RYU MY, KIM JS
  • 作者关键词:   resonance energy transfer, graphene, semiconductor quantum well, free exciton, localized exciton, temperature dependence
  • 出版物名称:   NANO LETTERS
  • ISSN:   1530-6984 EI 1530-6992
  • 通讯作者地址:   Elect Telecommun Res Inst
  • 被引频次:   7
  • DOI:   10.1021/nl503624j
  • 出版年:   2015

▎ 摘  要

Resonance energy transfer (RET) has been employed for interpreting the energy interaction of graphene combined with semiconductor materials such as nanoparticles and quantum-well (QW) heterostructures. Especially, for the application of graphene as a transparent electrode for semiconductor light emitting diodes, the mechanism of exciton recombination processes such as RET in graphene-semiconductor QW heterojunctions should be understood clearly. Here, we characterized the temperature-dependent RET behaviors in graphene/semiconductor QW heterostructures. We then observed the tuning of the RET efficiency from 5% to 30% in graphene/QW heterostructures with similar to 60 nm dipoledipole coupled distance at temperatures of 300 to 10 K. This survey allows us to identify the roles of localized and free excitons in the RET process from the QWs to graphene as a function of temperature.