教師資料查詢 | 類別: 期刊論文 | 教師: 莊程豪 CHENG-HAO CHUANG (瀏覽個人網頁)

標題:Enhanced light–matter interaction of graphene–gold nanoparticle hybrid films for high-performance SERS detection
學年102
學期2
出版(發表)日期2014/04/15
作品名稱Enhanced light–matter interaction of graphene–gold nanoparticle hybrid films for high-performance SERS detection
作品名稱(其他語言)
著者Yuanxin Du; Yuan Zhao; Yan Qu; Chia-Hao Chen; Chieh-Ming Chen; Cheng-Hao Chuang; Yanwu Zhu
單位淡江大學物理學系
出版者United Kingdom: R S C Publications
著錄名稱、卷期、頁數Journal of Materials Chemistry C 2, p.4683-4691
摘要By simply coating graphene films on Au nanoparticles, the optical properties of the hybrid films are investigated. It is found that the coverage of a monolayer graphene film leads to a decreased transmittance of up to 15.8% in the visible range, much higher than the 2.3% transmittance loss for intrinsic graphene. At the same time, the plasmonic resonance of the hybrid films experiences a red-shift in resonance frequency and a broadening in the transmission dip. By means of finite element simulations, these observations are attributed to strong light–matter interaction at the interface between graphene and Au nanoparticles, as indicated by the increased absorption cross section and higher electric field intensity. The electron transfer between graphene and Au nanoparticles is confirmed by high resolution X-ray photoelectron spectroscopy studies. Furthermore, the enhanced electromagnetic hot spots at the interface between graphene and Au nanoparticles make such graphene–Au nanoparticle hybrid films cost-effective and high-performance surface-enhanced Raman scattering substrates for detecting organic molecules such as rhodamine-6G, for which an enhancement factor of [similar]107 is achieved.
關鍵字
語言英文
ISSN2050-7534
期刊性質國外
收錄於SCI;
產學合作
通訊作者Du, Yuanxin
審稿制度
國別英國
公開徵稿
出版型式,電子版,紙本
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