Effect of Defects and Film Thickness on the Optical Properties of ZnO-Au Hybrid Films
學年 103
學期 2
出版（發表）日期 2015-04-28
作品名稱 Effect of Defects and Film Thickness on the Optical Properties of ZnO-Au Hybrid Films
作品名稱（其他語言）
著者 K. Saravanan; R. Krishnan; S. H. Hsieh; H. T. Wang; Y. F. Wang; W. F. Pong; K. Asokan; D. K. Avasthid; D. Kanjilald
單位
出版者
著錄名稱、卷期、頁數 RSC Advances 5(51), pp.40813-40819
摘要 Electronic structure and optical properties of ZnO(y nm)–Au(10 nm) hybrid films, with y = 20, 50 and 150, have been investigated for effective coupling of surface plasmon resonance (SPR) of Au nanoparticles (NPs) with ZnO band structure to enhance their optical properties. The films have been synthesized by a pulsed laser deposition method and studied by UV-Visible absorption, Raman, Photoluminescence, and X-ray absorption near-edge structural analyses. The effect of defects on coupling of SPR with ZnO band structure has been discussed based on optical and electronic structural studies. The local electronic structure analysis at the O K-edge reveals that, in the thinnest film more unoccupied states are introduced in ZnO due to hybridization of O 2p–Au 5d/6s orbitals. The increased density of states causes the enhanced optical properties of ZnO–Au hybrid films via increasing the population at the conduction band of ZnO. Our experimental findings demonstrate that in the thickest film, the exponential decay of SPR induced local field and defects are the main factors affecting the coupling of SPR with the ZnO band structure.
關鍵字
語言 en
ISSN 2046-2069
期刊性質 國外
收錄於 SCI
產學合作 國內 國外
通訊作者 K. Saravanan
審稿制度 否
國別 GBR
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/104601 )