Electronic structure of ZnO nanorods studied by angle-dependent x-ray absorption spectroscopy and scanning photoelectron microscopy

doi:10.1063/1.1737075

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題名:	Electronic structure of ZnO nanorods studied by angle-dependent x-ray absorption spectroscopy and scanning photoelectron microscopy
作者:	Chiou, J. W.;Jan, J. C.;Tsai, H. M.;Bao, C. W.;Pong, W. F.;Tsai, M. H.;Hong, I. H.;Klauser, R.;Lee, J. F.;Wu, J. J.;Liu, S. C.
貢獻者:	淡江大學物理學系
日期:	2004-05-03
上傳時間:	2009-12-31 10:28:44 (UTC+8)
出版者:	College Park: American Institute of Physics (AIP)
摘要:	Angle-dependent x-ray absorption near-edge structure (XANES) and scanning photoelectron microscopy measurements were performed to differentiate local electronic structures at the tips and sidewalls of highly aligned ZnO nanorods. The overall intensity of the O K-edge XANES spectra is greatly enhanced for small photon incident angles. In contrast, the overall intensity of the Zn K-edge XANES is much less sensitive to the photon incident angle. Both valence-band photoemission and O K-edge XANES spectra show substantial enhancement of O 2p derived states near the valence band maximum and conduction band minimum, respectively. The spatially resolved Zn 3d core level spectra from tip and sidewall regions show the lack of chemical shift. All the results consistently suggest that the tip surfaces of the highly aligned ZnO nanorods are terminated by O ions and the nanorods are oriented in the [0001¯] direction. © 2004 American Institute of Physics.
關聯:	Applied Physics Letters 84(18), pp.3462-3464
DOI:	10.1063/1.1737075
顯示於類別:	[物理學系暨研究所] 期刊論文

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