BANDGAP BOWING AND SPONTANEOUS ORDERING IN ZNSEXTE1-X

被引：29

作者：

FREYTAG, B ^{[1
]}

PAVONE, P ^{[1
]}

ROSSLER, U ^{[1
]}

机构：

[1] UNIV REGENSBURG,INST FESTKORPERPHYS,D-93040 REGENSBURG,GERMANY

来源：

SOLID STATE COMMUNICATIONS | 1995年 / 94卷 / 02期

关键词：

SEMICONDUCTORS; CRYSTAL STRUCTURE AND SYMMETRY; X-RAY SCATTERING; ORDER-DISORDER EFFECTS; OPTICAL PROPERTIES;

D O I：

10.1016/0038-1098(95)00035-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present the results of experimental investigations on bandgap bowing and spontaneous ordering in MOVPE grown ZnSexTe1-x. The bowing parameter of b = 1.40 +/- 0.05eV found from different optical measurements on our epilayers is slightly larger than values found earlier from bulk material, indicating the possibility of spontaneous ordering in our samples. Ab-initio calculations for Zn2SeTe in the ordered CuAu- and CuPt-structures lean support to this possibility. In fact X-ray measurements performed on our samples with x = 0.39 and x = 0.54 show peaks, forbidden in the zincblende structure, which give evidence for spontaneous ordering in the CuPt structure.

引用

页码：103 / 106

页数：4

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