Photoconduction and the electronic structure of silica nanowires embedded with gold nanoparticles
學年 99
學期 1
出版（發表）日期 2011-01-01
作品名稱 Photoconduction and the electronic structure of silica nanowires embedded with gold nanoparticles
作品名稱（其他語言）
著者 Pao, C.-W.; Wu, C.-T.; Tsai, H.-M.; Liu, Y.-S.; Chang, C.-L.; Pong, W. F.; Chiou, J.-W.; Chen, C.-W.; Hu, M.-S.; Chu, M.-W.; Chen, L.-C.; Chen, C.-H.; Chen, K.-H.; Wang, S.-B.; Chang, S.-J.; Tsai, M.-H.; Lin, H.-J.; Lee, J.-F.; Guo, J.-H.
單位 淡江大學物理學系
出版者
著錄名稱、卷期、頁數 Physical Review B 84(16), 165412(8pages)
摘要 Silica nanowires (SiOx-NWs) embedded with Au peapods have been studied by energy-filtered scanning transmission electron microscopy (EFTEM), O K- and Au L3-edge x-ray absorption near-edge structure (XANES), and extended x-ray absorption fine structure (EXAFS), x-ray emission spectroscopy (XES) and scanning photoelectron microscopy. XANES and XES data show that band gaps of Au-peapod-embedded and pure SiOx-NWs were 6.8 eV. In additional, XANES and EXAFS results indicate illumination-induced electron transfer from Au peapod to SiOx-NWs and does not show any feature attributable to the formation of Au-Si bonding in the Au peapod embedded in SiOx-NWs with or without illumination. Photoresponse and EFTEM measurements show that green light has more significant enhancement of photoconductivity than red and blue light due to surface plasmon resonance and suggest that transport of electrons across SiOx-NWs is via Mott-variable-range hopping mechanism through localized or defect states.
關鍵字
語言 en
ISSN 1098-0121 1550-235X
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Pong, W. F.
審稿制度 是
國別 USA
公開徵稿
出版型式 紙本
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