节点文献
半绝缘砷化镓晶片中碳的微区分布
Distribution of C Acceptor Defect in Semi-Insulation Gallium Arsenide
【摘要】 通过化学腐蚀 (AB腐蚀液 )、金相显微镜观察、透射电镜 (TEM)及能谱分析 (EDX) ,对LEC法生产的半绝缘砷化镓 (SI GaAs)单晶中碳的微区分布进行了分析。其结果表明 :碳的微区分布与晶片中位错密度及分布存在对应关系。高密度位错区位错形成胞状结构 ,该结构的胞壁区碳含量高 ,近胞壁区次之 ,剥光区碳含量低于检测限。
【Abstract】 Micro-distribution of C acceptor in LEC SI-GaAs wafer was investigated by means of chemical etching, microscope observation, transmission electron microscope (TEM), energy dispersive X-ray detector (EDX). The experimental results show that there is a corresponding relationship between distribution of C impurity and dislocation density in wafer. The C concentration is higher in the cell wall of cellular dislocation than that in the vicinity of the cell wall, and there is no C impurity in the denuded zone.
【关键词】 SI-Ga As;
位错;
碳含量;
能谱分析;
【Key words】 SI-GaAs; dislocation; carbon impurity; energy dispersive X-ray detector (EDX);
【Key words】 SI-GaAs; dislocation; carbon impurity; energy dispersive X-ray detector (EDX);
【基金】 国家自然科学基金 ( 60 2 760 0 9) ;中国人民解放军总装备部 ( 0 0JS0 2 .2 .1QT45 0 1) ;河北省自然科学基金 ( 5 990 3 3 )资助项目
- 【文献出处】 稀有金属 ,Chinese Journal of Rare Metals , 编辑部邮箱 ,2004年03期
- 【分类号】TN304
- 【下载频次】88