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硅基GaN外延层的光致发光谱 被引量:8

Photoluminescene spectra of GaN epilayer grown on Si substrate
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摘要 报道了在硅基上用简便的真空反应法制备出 Ga N 外延层,并对其发光特性进行了研究。发现衬底晶向、生长温度和退火均会对 Ga N 外延层的发光特性产生影响。 Si(111) 衬底比 Si(100) 衬底更有利于 Ga N 外延层的单色发光。退火使 Ga N 外延层的发光强度降低。在1 050 ℃下生长的 Ga N 外延层的发光强度高于其他温度下生长的 Ga N GaN epilayers grown on Si substrates by a novel vacuum reaction method is reported.The effect of substrate orientation, growth temperature and annealing process on the photoluminescences of GaN epilayers is investigated. It is found that Si(111)substrate is beneficial to the monochromic photoluminescence(PL) from the GaN epilayer. Annealing decreases the intensity of PL while the intensity of PL for GaN epilayer grown at 1 050 ℃ exhibits the highest.
出处 《半导体光电》 CAS CSCD 北大核心 1999年第2期120-122,126,共4页 Semiconductor Optoelectronics
基金 1996 年度国家教委"跨世纪优秀人才"基金
关键词 半导体材料 氮化镓 光致发光 外延层 Semicondrctor materials,Gallium Nitride, Photoluminescence, Epitaxial Layer
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