• 文献标题:   Multispectral graphene-based electro-optical surfaces with reversible tunability from visible to microwave wavelengths
  • 文献类型:   Article
  • 作  者:   ERGOKTAS MS, BAKAN G, KOVALSKA E, LE FEVRE LW, FIELDS RP, STEINER P, YU XX, SALIHOGLU O, BALCI S, FAL KO VI, NOVOSELOV KS, DRYFE RAW, KOCABAS C
  • 作者关键词:  
  • 出版物名称:   NATURE PHOTONICS
  • ISSN:   1749-4885 EI 1749-4893
  • 通讯作者地址:  
  • 被引频次:   56
  • DOI:   10.1038/s41566-021-00791-1 EA APR 2021
  • 出版年:   2021

▎ 摘  要

Optical materials with colour changing abilities have been explored for use in display devices(1), smart windows(2,3) or in the modulation of visual appearance(4-6). The efficiency of these materials, however, has strong wavelength dependence, which limits their functionality to a specific spectral range. Here, we report graphene-based electro-optical devices with unprecedented optical tunability covering the entire electromagnetic spectrum from the visible to microwave. We achieve this non-volatile and reversible tunability by electro-intercalation of lithium into graphene layers in an optically accessible device structure. The unique colour changing capability, together with area-selective intercalation, inspires the fabrication of new multispectral devices, including display devices and electro-optical camouflage coating. We anticipate that these results provide realistic approaches for programmable smart optical surfaces with a potential utility in many scientific and engineering fields such as active plasmonics and adaptive thermal management.