Stable photogenerated carriers in magnetic semiconductor nanocrystals

被引：95

作者：

Liu, WK ^{[1
]}

Whitaker, KM ^{[1
]}

Kittilstved, KR ^{[1
]}

Gamelin, DR ^{[1
]}

机构：

[1] Univ Washington, Dept Chem, Seattle, WA 98195 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2006年 / 128卷 / 12期

关键词：

D O I：

10.1021/ja060488p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the preparation and investigation of charged colloidal Co2+:ZnO and Mn2+:ZnO nanocrystals. Although both charged and magnetically doped colloidal semiconductor nanocrystals have been reported previously, colloidal charged and magnetically doped semiconductor nanocrystals as described herein have not. Conduction band electrons were introduced into colloidal ZnO diluted magnetic semiconductor (DMS) nanocrystals photochemically, and the resulting TM2+-e-CB interactions were observed by electron paramagnetic resonance spectroscopy (TM2+ = Co2+ or Mn2+). This new motif of colloidal charged magnetic semiconductor nanocrystals reveals attractive new opportunities for studying spin effects in DMS nanostructures relevant to proposed spintronics technologies. Copyright © 2006 American Chemical Society.

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页码：3910 / 3911

页数：2

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