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The effects of oxygen on selective Si epitaxial growth using disilane ane hydrogen gas in low pressure chemical vapor deposition  

손용훈 (홍익대학교 금속재료공학과)
박성계 (홍익대학교 금속재료공학과)
김상훈 (전자통신연구소)
이웅렬 (인천기능대학 재료과)
남승의 (홍익대학교 금속재료공학과)
김형준 (홍익대학교 금속재료공학과)
Publication Information
Journal of the Korean Vacuum Society / v.11, no.1, 2002 , pp. 16-21 More about this Journal
Abstract
Selective epitaxial growth(SEG) of silicon were performed at low temperature under an ultraclean environment below $1000^{\circ}C$ using ultraclean $Si_2H_6$ and $H_2$ gases ambient in low pressure chemical vapor deposition(LPCVD). As a result of ultraclean processing, epitaxial Si layers with good quality were obtained for uniform and SEG wafer at temperatures range 600~$710^{\circ}C$ and an incubation period of Si deposition only on $SiO_2$ was found. Low-temperature Si selectivity deposition condition and epitaxy on Si were achieved without addition of HCl. The epitaxial layer was found to be thicker than the poly layer deposited over the oxide. Incubation period prolonged for 20~30 sec can be obtained by $O_2$addition. The surface morphologies & cross sections of the deposited films were observed with SEM, The structure of the Si films was evaluated XRD.
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