基于MOCVD三步生长的GaAs/Si外延技术

王嘉宾; 王海珠; 刘伟超; 王曲惠; 范杰; 邹永刚; 马晓辉

doi:10.37188/CJL.20210378

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基于MOCVD三步生长的GaAs/Si外延技术

封面文章 | 更新时间：2022-02-25

- 基于MOCVD三步生长的GaAs/Si外延技术
  增强出版
- Three-step Epitaxial Growth of GaAs on Si by MOCVD echnology
- 发光学报 2022年43卷第2期页码：153-160
- 作者机构：
  
  1.长春理工大学　重庆研究院，重庆　401135
  2.长春理工大学　高功率半导体国家重点实验室，吉林　长春　130022
- 作者简介：
  
  [ "王嘉宾(1997-)，男，吉林吉林人，硕士研究生，2019 年于长春理工大学获得学士学位，主要从事半导体外延生长的研究。E-mail: 985626845@qq.com" ]
  [ "王海珠(1983-)，男，吉林长春人，博士，副研究员，博士生导师，2012年于吉林大学获得博士学位，2014年清华大学博士后，主要从事半导体激光外延材料制备及应用的研究。E-mail: whz@cust.edu.cn" ]
- 基金信息：
  
  吉林省科技发展计划(20210201089GX);重庆市自然科学基金(cstc2021jcyj-msxmX1060)
- DOI：10.37188/CJL.20210378
  中图分类号： TN304.2
- 纸质出版日期：2022-02，
  
  收稿日期：2021-12-02，
  
  修回日期：2021-12-20，
- 稿件说明：
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王嘉宾, 王海珠, 刘伟超, 等. 基于MOCVD三步生长的GaAs/Si外延技术[J]. 发光学报, 2022,43(2):153-160.

JIA-BIN WANG, HAI-ZHU WANG, WEI-CHAO LIU, et al. Three-step Epitaxial Growth of GaAs on Si by MOCVD echnology. [J]. Chinese journal of luminescence, 2022, 43(2): 153-160.
王嘉宾, 王海珠, 刘伟超, 等. 基于MOCVD三步生长的GaAs/Si外延技术[J]. 发光学报, 2022,43(2):153-160. DOI： 10.37188/CJL.20210378.

JIA-BIN WANG, HAI-ZHU WANG, WEI-CHAO LIU, et al. Three-step Epitaxial Growth of GaAs on Si by MOCVD echnology. [J]. Chinese journal of luminescence, 2022, 43(2): 153-160. DOI： 10.37188/CJL.20210378.

摘要

在硅(Si)上外延生长高质量的砷化镓(GaAs)薄膜是实现硅基光源单片集成的关键因素。但是，Si材料与GaAs材料之间较大的晶格失配、热失配等问题对获得高质量的GaAs薄膜造成了严重影响。本文利用金属有机化学气相沉积(MOCVD)技术开展Si基GaAs生长研究。通过采用三步生长法，运用低温成核层、高温GaAs层与循环热退火等结合的方式，进一步降低Si基GaAs材料的表面粗糙度和穿透位错密度。并利用X射线衍射(XRD)

-2

扫描追踪采用不同方法生长的样品中残余应力的变化。最终，在GaAs低温成核层生长时间62 min(生长厚度约25 nm)时，采用三步生长、循环热退火等结合的方式获得GaAs(004) XRD摇摆曲线峰值半高宽(FWHM)为401″、缺陷密度为6.8×10

-2

、5 μm×5 μm区域表面粗糙度为6.71 nm的GaAs外延材料，在材料中表现出张应力。

Abstract

Epitaxial growth of high-quality gallium arsenide(GaAs) films on silicon(Si) is the key factor to realize the monolithic integration of silicon-based light sources. However

the large lattice mismatch and thermal mismatch between Si and GaAs have a serious impact on the quality of GaAs films obtained by epitaxial growth. The growth of GaAs on Si was studied by metal-organic chemical vapor deposition(MOCVD). In this paper

the three-step growth method was used to further reduce the surface roughness and threading dislocation density of GaAs on Si by combining low temperature GaAs nucleation layer

high temperature GaAs layer and thermal cycle annealing. And the changes of residual stress in samples grown by different methods were tracked by X-ray diffraction(XRD)

-2

scan. Finally

when the growth time of GaAs low-temperature nucleation layer was 62 min (the growth thickness was about 25 nm)

the full width at half maximum(FWHM) of GaAs epitaxial material exhibiting tensile stress with GaAs(004) rocking curve measured by XRD was 401″

threading dislocation density was 6.8×10

-2

and surface roughness over 5 μm×5 μm scan areas of 6.71 nm was obtained by means of three-step growth and cyclic annealing.

关键词

金属有机化学气相沉积砷化镓硅异质外延

Keywords

metal-organic chemical vapor depositionGaAsSiheteroepitaxy

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