›› 2014, Vol. 27 ›› Issue (1): 115-.

• 论文 • 上一篇    下一篇

利用AlxGa1-xN在Si(111)上生长无裂纹GaN

王振晓,张锴,李涛,王丹丹,韩孟序   

  1. (西安电子科技大学 宽带隙半导体技术国家重点学科实验室,陕西 西安 710071)
  • 出版日期:2014-01-15 发布日期:2014-01-12
  • 作者简介:王振晓(1989—),男,硕士研究生。研究方向:Si基GaN的生长。E-mail:zhenxiao_wang@163.com

Crack-free GaN Growth on Si(111) with Step-graded AlxGa1-x N Intermediate Layers

 WANG Zhen-Xiao, ZHANG Jie, LI Tao, WANG Dan-Dan, HAN Meng-Xu   

  1. (Key Lab of Wide Band-gap Semiconductor Materials & Device,Xidian University,Xi'an 710071,China)
  • Online:2014-01-15 Published:2014-01-12

摘要:

利用LP-MOCVD技术在Si(111)衬底上,用不同Al组分的AlGaN做缓冲层,再在缓冲层上生长GaN薄膜,采用XRD技术和原子力显微镜(AFM)分析样品知,样品整体的结晶质量良好。通过分析外延层的拉曼谱得出GaN中存在应力,而且是张应力,通过计算得出,应力为0.23 GPa。

关键词: MOCVD, Si(111), GaN, 双晶X射线衍射

Abstract:

Crack-free GaN epitaxial layer is introduced by Low Pressure-Metal-Organic Chemical Vapor Deposition (LP-MOCVD) with step-graded AlGaN buffer layers on Si(111) substrate.The sample has a good crystallization quality analyzed by X-ray diffraction (XRD) and Aomic Force Microscope (AFM).There is tensile stress of 0.23 GPa in GaN epetaxial layer through Raman spectrum.

Key words: MOCVD;Si(111);GaN;XRD

中图分类号: 

  • TN304.1