The Fluorescence Analysis on Graphene-Based Nano Plate

• Main Authors: Kai-HongLuo, 羅凱鴻
• Other Authors: Hsiang-Chen Chui
• Format: Others
• Language: en_US
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/96920985763270263155

碩士 === 國立成功大學 === 光電科學與工程學系 === 100 === We reported the quenching effect of rhodamine 6G appeared on the single atom thickness of graphene flake over the silver film or not. The silver film was deposited on silicon-dioxide/silicon substrate. And then, the monolayer graphene flake was transferred to the silver/ silicon-dioxide/silicon substrate by chemical vapor deposition, and was treated with hydrogen plasma. The graphene treated with hydrogen plasma was called the hydrogen-terminated graphene. It maybe was similar to pristine graphene. But the characteristics of graphene and hydrogen-terminated graphene were different. The π bonds (C=C) of the hydrogen-terminated graphene were destroyed by hydrogen plasma, so the resistance of hydrogen-terminated graphene was higher than the resistance of pristine graphene.[4] Then, we used the graphene treated with hydrogen plasma to discuss the energy transfer of quenching effect. We measured rhodamine 6G on six substrates, for example: silicon-dioxide/silicon, silver/silicon-dioxide/silicon, graphene/ silicon -dioxide /silicon, graphene/silver/silicon -dioxide/silicon, hydrogen-terminated graphene/silicon -dioxide/silicon and hydrogen-terminated graphene/silver/silicon -dioxide/silicon. Then, the quenching effect was obviously resisted from graphene and silver by hydrogen-terminated graphene. The quenching effect was reduced about 57 percent on the graphene after hydrogen plasma treatment. Moreover, it was reduced about 75 percent on hydrogen-terminated graphene covering silver film. The mode of energy transfer ways was constructed to explain the phenomenon.