【摘 要】
：
Owing to their superior intrinsic properties,GaNbased materials are very promising semiconductor materials for applications in optoelectronic devices,as well as
【机 构】
：
Key Laboratory for Renewable Energy, Institute of Physics, Chinese Academy of Sciences, Beijing 1001
论文部分内容阅读
Owing to their superior intrinsic properties,GaNbased materials are very promising semiconductor materials for applications in optoelectronic devices,as well as in high power,high frequency and high temperature electronic devices.However,a lack of suitable substrate hampers their application in these fields.Generally,sapphire,SiC and Si are the most used as substrates.[1-3] Due to its low cost,large-size,high electrical,thermal conductivities,and potential applications in optoelectronic integrated circuits,Si has attracted more and more attention for use as a substrate for GaN growth.
其他文献
为实现研究精密机械热态特性的新方法—一热激励法,作者研制了以微机为核心盼热激励装置。该装置集热激励、检测、控制为一体,可对机械实现无损、灵活、方便、快速的热激励。
Time reversal symmetry (TRS) is a key symmetry for classification of unconventional superconductors,and the violation of TRS often results in a wealth of novel
A mode-locked erbium doped fiber laser (EDFL) is demonstrated using the vanadium oxide (V2O5) material as a saturable absorber (SA).The V2O5 based SA is hosted
政和大白茶,是三倍体(3n=45,见图1)无性繁殖系品种,属小乔木,大叶类(见图2),迟芽种。在全国茶树良种审定委员会举行的第二次会议上被认定为全国茶树优良品种。政和大白茶原
Electronic transports of few-layer 1T-MoTe2 films are measured at temperatures down to 0.26K.The lowtemperature conductivity exhibits logarithmic temperature de
The closure of a turbulence field is a longstanding fundamental problem,while most closure models are introduced in spectral space.Inspired by Chous quasi-norma
本研究借助英语语料库,通过分析拟容器结构频率与相应的a(n)N_1 of N_2结构表量频率之间的关系,以及a(n)N_1 of N_2结构的表量频率与其左中心指称频率之间的关系,发现添加在
The transport coefficients of high temperature sulfur hexafluoride (SF6) plasmas in local thermodynamic equilibrium are calculated using collision integrals der
An amorphous magnetic material system (Co20Fe47Ta20B13)1-xOx is fabricated by magneto sputtering.Three stages of magnetization behavior exist when oxygen conten
Over the past few years,a great deal of nonlinear quantum optical phenomena based on atomic coherence and quantum interference have been studied in an atomic re