Surface transformation and photoinduced recovery in CdSe nanocrystals

被引：98

作者：

Hess, BC ^{[1
]}

Okhrimenko, IG ^{[1
]}

Davis, RC ^{[1
]}

Stevens, BC ^{[1
]}

Schulzke, QA ^{[1
]}

Wright, KC ^{[1
]}

Bass, CD ^{[1
]}

Evans, CD ^{[1
]}

Summers, SL ^{[1
]}

机构：

[1] Brigham Young Univ, Dept Phys & Astron, Provo, UT 84062 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.86.3132

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

CdSe nanocrystals in solution and films can enter a metastable state in which the highly luminescent nanocrystals become dark. This change, which we attribute to a surface transformation, can be caused by heating or by changing the environment of the nanocrystals at room temperature. The metastable transformation is reversed upon illumination of above-band-gap light, at which point the nanocrystals are again highly luminescent.

引用

页码：3132 / 3135

页数：4

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