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	Control of N/N2 species ratio in NO plasma for p-type doping of ZnO (EI CONFERENCE) 会议论文 OAI收割作者: Chen X.; Liu L.; Liu L.; Li B.; Li B. 收藏 \| 浏览/下载：21/0 \| 提交时间：2013/03/25 Nitrogen-doped ZnO thin films were grown on c-plane sapphire (Al 2O3) substrates via plasma-assisted molecular beam epitaxy using plasma activated nitric oxide (NO) as the oxygen source and dopant. X-ray diffraction measurements indicate that a small NO flux benefits the crystal quality of the thin films. Hall effect measurements indicate that the electron density of the ZnO films decreases gradually with decreasing NO flux and the conduction reverses to p-type at a certain flux. Optical emission spectra indicate that the N atom content in the NO plasma increases with decreasing NO flux and the origin of this is discussed. X-ray photoelectron spectroscopy measurements demonstrate that the number of N atom occupied O sites in the ZnO lattice increases correspondingly. 2011 American Institute of Physics.
	Upconversion luminescence properties of Y2O3:Yb 3+, Er3+ nanostructures (EI CONFERENCE) 会议论文 OAI收割作者: Cui Y.; Wang Y.; Wang Y.; Wang Y.; Wang Y. 收藏 \| 浏览/下载：21/0 \| 提交时间：2013/03/25 Cubic Y2O3 nanostructures doped with Yb3+ and Er3+ ions were synthesized by a facile hydrothermal method. Three distinct shapes such as nanotubes nanospheres and nanoflakes formed in the products by adjusting the pH value of reacting solution. Powder X-ray diffraction analyses indicate that all the three nanostructures are pure cubic phase while electron microscopy measurements confirm the formation of different morphologies. These nanostructures exhibit strong visible upconversion luminescence under the excitation of a 978-nm diode laser. In Yb3+- and Er3+- codoped Y2O3 nanocrystals the relative intensity of green emission became stronger as the size and morphology of sample changed from tubes to flakes. 2006 Elsevier B.V. All rights reserved.
	A charge-collection method for measurements of pulsed fast-neutron flux 期刊论文 OAI收割 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 卷号: 481, 页码: 493-501 作者: Ouyang, XP; Li, ZF; Ho, YK; Zhang, ZB \| 收藏 \| 浏览/下载：18/0 \| 提交时间：2018/05/31 neutron detector ion-induced secondary electron emission pulsed neutron measurements charge-collection method
	Direct observation of subsurface oxygen on the defects of Pd(100) 期刊论文 OAI收割 surface science, 1999, 卷号: 439, 期号: 1-3, 页码: l803-l807 作者: Huang, WX; Zhai, RS; Bao, XH 收藏 \| 浏览/下载：20/0 \| 提交时间：2010/11/30 electron emission measurements oxygen palladium surface defects work function measurements