Magnetoluminescence properties of Hg1-xCdxTe epitaxial layers and superlattice structures grown by metalorganic molecular beam epitaxy

被引:5
|
作者
Tran, TK [1 ]
Parikh, A [1 ]
Pearson, SD [1 ]
Wagner, BK [1 ]
Benz, RG [1 ]
BicknellTassius, RN [1 ]
Summers, CJ [1 ]
Kelz, T [1 ]
Tomm, JW [1 ]
Hoerstel, W [1 ]
Schafer, P [1 ]
Muller, U [1 ]
机构
[1] HUMBOLDT UNIV BERLIN,INST PHYS,D-10099 BERLIN,GERMANY
关键词
HgCdTe; magnetoluminescence; MOMBE; superlattice structures;
D O I
10.1007/BF02655009
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
We present a study of the electro-optical properties ofHg(1-x)Cd(x)Te epitaxial layers and Hg1-xCdxTe/CdTe (0.28 < x < 0.30) superlattice structures by x-ray diffraction, lateral transport and photo- and magneto-luminescence measurements. Systematic studies of the excitation intensity and magnetic field dependence of the photoluminescence revealed direct evidence of an excitonic contribution to the observed luminescence in Hg1-xCdxTe epitaxial layers. Similar investigations of the superlattice structures indicated that excitonic corrections were required to adequately fit the luminescence data. Optical gains of 80 cm(-1) were obtained for an excitation intensity of 100 kW/cm(2) indicating suitable electro-optical properties for making efficient mid-infrared laser diodes.
引用
收藏
页码:1203 / 1208
页数:6
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