FORMATION OF STABLE D CENTERS IN QUANTUM-WELLS

被引：31

作者：

MANDRAY, A ^{[1
]}

HUANT, S ^{[1
]}

ETIENNE, B ^{[1
]}

机构：

[1] LAB MICROSTRUCT & MICROELECTR, CNRS, F-92225 BAGNEUX, FRANCE

来源：

EUROPHYSICS LETTERS | 1992年 / 20卷 / 02期

关键词：

D O I：

10.1209/0295-5075/20/2/015

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A magneto-optical study is presented on selectively doped GaAs/(Ga, Al)As multi-quantum wells in which a built-in population of D- centres (neutral donors that bind a second electron) exists under equilibrium conditions. Different doping geometries are compared and magneto-optical experiments under optical pumping with visible light are described to elucidate the mechanism of the formation of D- centres in quantum wells. It is shown that it is possible to convert all neutral donors in the quantum wells to D- centres, a situation in sharp contrast to bulk semiconductor samples. These experiments aiming at D- doping of quantum wells reveal the importance of potential fluctuations in lightly doped quantum wells.

引用

页码：181 / 186

页数：6

共 17 条

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