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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：22/0 \| 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.
	Raman spectra and phonon modes of MgxZn1-xO alloy films (EI CONFERENCE) 会议论文 OAI收割 12th International Conference on II-VI Compounds, September 12, 2005 - September 16, 2005, Warsaw, Poland Wei Z. P.; Lu Y. M.; Shen D. Z.; Zhang Z. Z.; Wu C. X.; Zhang J. Y.; Yao B.; Fan X. W. 收藏 \| 浏览/下载：23/0 \| 提交时间：2013/03/25 Hexagonal MgxZn1-xO alloy layers with 0 &le 0.3 have been grown by plasma-assisted molecular beam epitaxy on sapphire (006) and Si (111) substrates. Their crystal structures are characterized by x-ray diffraction spectroscopy. The nonresonant and resonant Raman spectra were measured using 488 nm line from Ar+ laser and 325 nm line from He-Cd laser by backscattering geometry. Four Raman modes (E2 high LO TO multiphonon processes) were observed in the nonresonant Raman spectra of hexagonal MgxZn1-xO with different Mg contents. The optical phonon frequencies were found to display one-mode behaviour for all the samples since no separate ZnO- and MgO-like modes were observed. The long-wavelength frequencies of ZnO-like optical phonons measured in the resonant Raman spectra can be expressed as linear functions of x. These behaviours can be explained within a modified random-element-isodisplacement model (MREI). 2006 WILEY-VCH Verlag GmbH Co. KGaA.
	Characteristics and optical spectra of V : YAG crystal grown in reducing atmosphere 期刊论文 OAI收割 j. cryst. growth, 2006, 卷号: 294, 期号: 2, 页码: 437, 441 Zhang Dan; 苏良碧; 李红军; Qian Xiaobo; 徐军收藏 \| 浏览/下载：1007/257 \| 提交时间：2009/09/24 absorption spectra reducing atmosphere as-grown crystal graphite-heating elements