文摘
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研究了扩散源的浓度与掺杂后硅材料补偿度之间的关系。以MnCl2·4H2O乙醇溶液为扩散源,涂在初始电阻率为3.8Ω·cm的P型单晶硅片表面,在高温(1200℃)下掺杂锰后,在室温避光条件下,用SDY-5型双电翻四探针仪测样品电阻率p。改变扩散源的浓度重复实验,用XRD对扩散后的样品进行分析,结果表明:当硅片表面浓度为23、4×10^-8mol/cm^2时,扩散后样品体电阻率的径向不均匀度在5%以内,扩散后硅片的补偿度最大。 |
其他语种文摘
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MnCl2 ? 4H2O ethanol solution was daubed to a surface of p-type single crystal Si disc of 3.8 Q. ? cm as a Mn dopant source, and the sample was heated at 1 200 °C to do Mn diffusion. Experiments were repeated by changing concentration of the solution and obtaining different surface density of daubed source. Resistivities of the doped samples were measured with SDY-5 four-probe device at room temperature and photophobic condition. The samples were also analyzed using X-ray diferaction method. Experimental results show that resistivity and compensation degree of the doped samples both obtain maximum values when surface density of the daubed source is 23.4xlO"8 mol/cm2, while radial uniformity of resistivity of the sample is within 5%. |
来源
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电子元件与材料
,2005,24(6):21-23 【扩展库】
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关键词
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电子技术
;
扩散源
;
补偿度
;
固相反应
;
锰硅化物
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地址
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中国科学院新疆理化技术研究所, 新疆, 乌鲁木齐, 830011
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1001-2028 |
学科
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电子技术、通信技术 |
基金
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国家外国专家局项目
;
中国科学院西部之光人才培养计划
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文献收藏号
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CSCD:2102852
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