Enhanced broadband wide-angle light-graphene interactions in visible wavelengths assisted by nanoporous gold structure
Enhanced broadband wide-angle light-graphene interactions in visible wavelengths assisted by nanoporous gold structure
复制标题
纳米多孔金结构辅助增强可见光波长下的宽带广角光-石墨烯相互作用
DOI:
10.1063/1.4879016
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发表时间:
2014-05
影响因子:
4
通讯作者:
Liu, F.
中科院分区:
文献类型:
--
作者:
Hao, Y.;Zhao, X.;Song, C.;Chen, L.;Shi, W.;Liu, F.
We experimentally demonstrate enhanced light-graphene interactions aided by the surface plasmons sustained in bicontinuous structure of nanoporous gold (NPG) film in visible wavelengths. Coupling with such amorphous metallic structure enables broadband and wide-angle absorption enhancement of graphene. The average absorption enhancement at normal incidence is at one-order of magnitude larger than that of pristine graphene, to be 25.6%. In addition, the strong near electric fields at the surface proximity of NPG film greatly promote the Raman scattering of graphene up to one order of magnitude for either 514.5- or 632.8-nm laser excitation. Our study shows that NPG film is a promising platform in graphene-integrated applications in visible regime such as photodetectors and light-harvesting devices.
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