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半导体研究所 [4]
长春光学精密机械与物... [3]
清华大学 [2]
兰州理工大学 [2]
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会议论文 [11]
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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
Chen X.
;
Zhang Z.
;
Yao B.
;
Jiang M.
;
Wang S.
;
Li B.
;
Shan C.
;
Liu L.
;
Zhao D.
;
Shen D.
收藏
  |  
浏览/下载:14/0
  |  
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.
Phase-field modeling of solute trapping in single-phase alloys during directional solidification
会议论文
作者:
Xiao, Rongzhen
;
Wang, Zhiping
;
Zhu, Changsheng
;
Li, Wensheng
;
Feng, Li
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  |  
浏览/下载:6/0
  |  
提交时间:2019/11/15
Phase-field model
Directional solidification
Solute trapping
Crystalline anisotropy
Talbot grating for color separation in color liquid crystal display - art. no. 68320P
会议论文
HOLOGRAPHY AND DIFFRACTIVE OPTICS III, Conference on Holography and Diffractive Optics III, Beijing, PEOPLES R CHINA, Web of Science
Zhang, Yan
;
Tan, Qiaofeng
;
Yan, Yingbai
;
Jin, Guofan
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  |  
浏览/下载:3/0
Talbot grating for color separation in color liquid crystal display
会议论文
Proceedings of the SPIE - The International Society for Optical Engineering, Holography and Diffractive Optics III, Beijing, China, INSPEC
Yan Zhang
;
Qiaofeng Tan
;
Yingbai Yan
;
Guofan Jin
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  |  
浏览/下载:5/0
Central hole effect on Whispering-Gallery-Mode of triangular lattice photonic crystal microcavity (EI CONFERENCE)
会议论文
Optoelectronic Materials and Devices III, October 27, 2008 - October 30, 2008, Hangzhou, China
Liu G.
;
Ning Y.
;
Li T.
;
Cui J.
;
Zhang Y.
;
Zhang X.
;
Wang Z.
;
Wang L.
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  |  
浏览/下载:15/0
  |  
提交时间:2013/03/25
Whispering-Gallery-Mode (WGM) photonic crystal microcavity is a kind of photonic crystal application and can potentially be used for miniaturized photonic devices
such as thresholdless lasers. In this paper we study the WGM of photonic crystal microcavities focusing on the so called H2 cavities which are formed by removing seven air holes. The WGM in these large-size cavities has some advantages compared with single defect WGM in the view of real device applications. We further add a central air hole in the cavity region to analyze the effect on WGM in the microcavity by finite difference time domain (FDTD) and plane wave expansion (PWE). It is found that the tolerance of WGM is large enough for the fabrication of electrical injection structure. 2008 SPIE.
High-performance EML grown on taper-masked pattern substrates by ultra-low-pressure MOCVD
会议论文
3rd international conference on materials for advanced technologies/9th international conference on advanced materials, singapore, singapore, jul 03-08, 2005
Zhao, Q
;
Pan, JQ
;
Zhang, J
;
Zhu, HL
;
Wang, W
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  |  
浏览/下载:156/44
  |  
提交时间:2010/03/29
selective area growth
Study on photonic band gaps of polystyrene photonic crystal slabs
会议论文
作者:
Wang Daobin
;
Hou Shanglin
;
Chen Yuhong
;
Zhang Cairong
;
Yuan Lihua
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  |  
浏览/下载:4/0
  |  
提交时间:2019/11/15
photonic crystal slabs
polystyrene
photonic band-gap
fill ratio
lattice
Investigation of growth mode in ZnO thin films prepared at different temperature by plasma-molecular beam epitaxy (EI CONFERENCE)
会议论文
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
Liang H. W.
;
Lu Y. M.
;
Shen D. Z.
;
Yan J. F.
;
Li B. H.
;
Zhang J. Y.
;
Liu Y. C.
;
Fan X. W.
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  |  
浏览/下载:26/0
  |  
提交时间:2013/03/25
High-quality ZnO thin films on c-plane sapphire (Al2O 3) substrates were prepared by plasma-molecular beam epitaxy (P-MBE). The influence of growth temperature on growth mode of ZnO was investigated. Real-time monitored by reflection high-energy electron diffraction (RHEED) images show that
below 500 C
ZnO thin film was grown by three-dimension (3D) growth mode. While the two-dimension (2D) growth mode was obtained above growth temperature of 650 C. Atomic force microscopy (AFM) images present that the surface morphology of ZnO thin film with 2D growth is improved and X-ray rocking curves (XRC) indicate that the full width at half maximum (FWHM) of the ZnO (0 0 2) peak becomes narrow. From the photoluminescence (PL) spectra
ultraviolet (UV) emission peak exhibits obvious blue-shift for the samples grown at lower temperature
which is attributed to the effect of the quantum confinement arisen from small crystal grain sizes. The minimum carrier concentration of N=7.661016 cm-3 was obtained in the ZnO thin films with the 2D grown
which is closed to that of bulk ZnO. 2005 Elsevier B.V. All rights reserved.
Investigation of GaAs/AlGaAs interfaces by reflectance-difference spectroscopy
会议论文
10th international conference on defects - recognition, imaging and physics in semiconductors (drip 10), batz sur mer, france, sep 29-oct 02, 2003
作者:
Ye XL
;
Xu B
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  |  
浏览/下载:11/0
  |  
提交时间:2010/10/29
SHORT-PERIOD SUPERLATTICES
RAMAN-SCATTERING
QUANTUM-WELLS
GROWTH
ROUGHNESS
SEGREGATION
ALAS/GAAS
ALAS
GAAS
Effects of polarization field on formation of two-dimensional electron gas in (0001) and (11(2)over-bar0) plane AlGaN/GaN heterostructures
会议论文
international conference on materials for advanced technologies, singapore, singapore, dec 07-12, 2003
作者:
Han PD
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  |  
浏览/下载:83/1
  |  
提交时间:2010/10/29
metalorganic chemical vapor deposition
semiconducting III-V materials
DOPED AL(X)GA1-XN/GAN HETEROSTRUCTURES
CARRIER CONFINEMENT
EFFECT TRANSISTORS
PHOTOLUMINESCENCE
MOBILITY
HETEROJUNCTION
INTERFACE
HFETS
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