THE METALORGANIC CHEMICAL-VAPOR-DEPOSITION AND PHOTOLUMINESCENCE OF TELLURIUM-DOPED ZNS/CDS-TE STRAINED-LAYER SUPERLATTICES

被引：9

作者：

DHESE, KA

NICHOLLS, JE

HAGSTON, WE

WRIGHT, PJ

COCKAYNE, B

DAVIES, JJ

机构：

[1] DEF RES AGCY,GREAT MALVERN WR14 3PS,ENGLAND

[2] UNIV E ANGLIA,SCH PHYS,NORWICH NR4 7TJ,NORFOLK,ENGLAND

来源：

JOURNAL OF CRYSTAL GROWTH | 1994年 / 138卷 / 1-4期

关键词：

D O I：

10.1016/0022-0248(94)90795-1

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Tellurium (Te) exciton traps have been doped into the wells of ZnS/CdS:Te superlattices to investigate the potential for achieving enhanced blue emission intensities at room temperature. Exciton trapping and corresponding blue emission was confirmed from photoluminescence studies, however, the emission was found to quench above about 200 K, which is probably attributable to dislocation formation in highly strained layers when large ions such as Te are incorporated. Comparison of the emission linewidths with that of bulk CdS:Te show that the nature of electron-phonon coupling to the Te centres changes in the superlattice structures compared to bulk material.

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收藏

页码：140 / 144

页数：5

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