Confinement effects on phosphorus donors embedded in silicon nanocrystals

被引：2

作者：

Pawlak, BJ ^{[1
]}

Gregorkiewicz, T ^{[1
]}

Ammerlaan, CAJ ^{[1
]}

机构：

[1] Univ Amsterdam, Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands

来源：

PHYSICA B-CONDENSED MATTER | 1999年 / 273-4卷

关键词：

silicon nanocrystals; electron paramagnetic resonance; quantum confinement;

D O I：

10.1016/S0921-4526(99)00559-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Magnetic resonance of shallow donor center phosphorus is used to track size-related changes of energy band structure in silicon powders. Small conduction band upshifts of several meV are determined for nanocrystals of approximately d = 100 nm diameter and smaller. These are interpreted as the onset of the quantum confinement-induced variations of silicon band structure. The conduction band upshift is experimentally found to follow the 1/d(1.2) dependence in the investigated size range. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：938 / 943

页数：6

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