Low-temperature epitaxial growth of the quaternary wide band gap semiconductor SiCAlN

被引:35
|
作者
Roucka, R [1 ]
Tolle, J
Chizmeshya, AVG
Crozier, PA
Poweleit, CD
Smith, DJ
Tsong, IST
Kouvetakis, J
机构
[1] Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA
[2] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA
[3] Arizona State Univ, Ctr Solid State Sci, Tempe, AZ 85287 USA
关键词
D O I
10.1103/PhysRevLett.88.206102
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Two compounds SiC and AlN, normally insoluble in each other below similar to2000 degreesC , are synthesized as a single-phase solid-solution thin film by molecular beam epitaxy at 750 degreesC. The growth of epitaxial SiCAlN films with hexagonal structure takes place on 6H-SiC(0001) substrates. Two structural models for the hexagonal SiCAlN films are constructed based on first-principles total-energy density functional theory calculations, each showing agreement with the experimental microstructures observed in cross-sectional transmission electron microscopy images. The predicted fundamental band gap is 3.2 eV for the stoichiometric SiCAlN film.
引用
收藏
页码:4 / 206102
页数:4
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