The energy gap E-g of Zn1-xMgxSySe1-y epitaxial layers as a function of composition and temperature

被引:31
作者
Lunz, U
Schumacher, C
Nurnberger, J
Schull, K
Gerhard, A
Schussler, U
Jobst, B
Faschinger, W
Landwehr, G
机构
[1] UNIV WURZBURG,INST MINERAL,D-97074 WURZBURG,GERMANY
[2] UNIV BREMEN,INST FESTKORPERPHYS,D-28359 BREMEN,GERMANY
关键词
D O I
10.1088/0268-1242/12/8/007
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The energy gap E-g of zinc-blende Zn1-xMgxSySe1-y epitaxial layers grown by molecular beam epitaxy has been determined over a wide range of composition using optical transmission and reflection and an empirical formula for the energy gap at room temperature is also given. In addition in situ spectroscopic ellipsometry was used in order to determine the temperature dependence of the energy gap E-g between room temperature and the growth temperature of alloys with compositions x, y as used in cladding layers and waveguides for blue-green light-emitting devices.
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页码:970 / 973
页数:4
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