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三峡库区城镇化背景下河流dom的吸收及荧光光谱特征 期刊论文  OAI收割
环境科学, 2019, 卷号: 40, 期号: 12, 页码: 5309
作者:  
陈昭宇;  李思悦
  |  收藏  |  浏览/下载:18/0  |  提交时间:2020/08/24
Hydrothermal processing and characterization of Ce1-xPbxO2-delta solid solutions 期刊论文  OAI收割
Solid State Sciences, 2009, 卷号: 11, 期号: 3, 页码: 671-675
G. F. Zhang, L. P. Li, G. S. Li, X. Q. Qiu and G. F. Yan
收藏  |  浏览/下载:20/0  |  提交时间:2012/11/06
Hydrothermal processing and characterization of Ce1-xPbxO2-delta solid solutions 期刊论文  OAI收割
Solid State Sciences, 2009, 卷号: 11, 期号: 3, 页码: 671-675
G. F. Zhang, L. P. Li, G. S. Li, X. Q. Qiu and G. F. Yan
收藏  |  浏览/下载:11/0  |  提交时间:2012/11/06
Energy transfer between silicon-oxygen-related defects and Yb3+ in transparent glass ceramics containing Ba2TiSi2O 8 nanocrystals 期刊论文  OAI收割
appl. phys. lett., 2008, 卷号: 93, 期号: 18, 页码: 181110
Ye Song; Zhu Bin; Luo Jin; Teng Yu; Chen Jingxin; Lakshminarayana G.; Qian Guodong; 邱建荣
收藏  |  浏览/下载:1106/71  |  提交时间:2009/09/18
Determination of optical constants of zirconia and silica thin films in UV to visible range (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
作者:  
Liu L.;  Yang H.;  Liu L.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
A curve fitting method for determining the optical constants of some dielectric thin films is described with dispersion theory in the paper. A computer program based on Matlab is developed and optimized. The fitting errors are analyzed with theoretical data  which gives very high accurate results. A program is applied to fitting the measured photometric spectra of ion sputtered zirconia and silica thin films in 200-850nm spectra range. The thickness is verified with the method of grazing x-ray diffraction. With the thickness known  the optical constants of zirconia films near the absorption range are obtained with single-wavelength method. As a result  quite good fitting results are obtained with high accuracy. Finally  an ultraviolet (UV) high-pass optical filter is designed with optical constants extracted by this method. The transmission and reflection spectra of the filter are measured and compared to designed spectra. A good coherence was derived.  
Remarkable changes in the optical properties of CeO2 nanocrystals induced by lanthanide ions doping 期刊论文  OAI收割
inorganic chemistry, 2007, 卷号: 46, 期号: 13, 页码: 5237-5242
Wang Z; Quan Z; Lin J
收藏  |  浏览/下载:157/11  |  提交时间:2010/07/13
Effects of annealing and dopant concentration on the optical characteristics of ZnO : Al thin films by sol-gel technique 期刊论文  OAI收割
Physica B-Condensed Matter, 2006, 卷号: 382, 期号: 1-2, 页码: 201-204
S. W. Xue; X. T. Zu; W. G. Zheng; M. Y. Chen; X. Xiang
收藏  |  浏览/下载:24/0  |  提交时间:2012/04/14
Lattice constants and electron gap energies of nano- and subnano-sized cerium oxides from the experiments and first-principles calculations 期刊论文  OAI收割
JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 卷号: 408, 页码: 1145
Tsunekawa, S; Wang, JT; Kawazoe, Y
收藏  |  浏览/下载:19/0  |  提交时间:2013/09/18
Characterization of ZnO/Mg0.12Zn0.88O heterostructure grown by plasma-assisted molecular beam epitaxy (EI CONFERENCE) 会议论文  OAI收割
13th International Conference on Molecular Beam Epitaxy, August 22, 2004 - August 27, 2004, 13th International Conference on Molecular Beam Epitaxy, August 22, 2004 - August 27, 2004
Lu Y. M.; Wu C. X.; Wei Z. P.; Zhang Z. Z.; Zhao D. X.; Zhang J. Y.; Liu Y. C.; Shen D. Z.; Fan X. W.
收藏  |  浏览/下载:28/0  |  提交时间:2013/03/25
In this paper  Mg0.12Zn0.88O/ZnO heterostructures were fabricated on c-plane sapphire (Al2O3) substrates by plasma-assisted molecular beam epitaxy (P-MBE). The quality of the Mg 0.12Zn0.88O alloy thin film was characterized by X-ray diffraction (XRD) and reflection high-energy electron diffraction (RHEED). Optical properties of the Mg0.12Zn0.88O/ZnO heterostructure were studied by absorption and photoluminescence (PL) spectra. At room temperature (RT)  Mg0.12Zn0.88O/ZnO heterostructures show two absorption edges originating from ZnO and Mg 0.12Zn0.88O layers  respectively. In PL spectra  two ultraviolet emission bands related to the ZnO layer and the Mg 0.12Zn0.88O layer were observed. The emission band from Mg0.12Zn0.88O layer dominates at moderately lower temperature  and the luminescence of ZnO becomes gradually important with increasing temperature. This is suggested to exist as a potential barrier in the interface and to restrict the relaxation of the carriers from the Mg 0.12Zn0.88O layer to ZnO layer. As the thickness of ZnO layer decreases  the emission from the Mg0.12Zn0.88O layer becomes weaker and weaker. When the ZnO thickness is up to 2 nm  only the luminescence of the ZnO layer is observed at RT. The quenching of the emission corresponding to the MgZnO layer indicates the existence of a strong injection process in the samples with thinner ZnO layer. 2005 Elsevier B.V. All rights reserved.