Optical Properties of Zincblende Cadmium Selenide Quantum Dots

被引：151

作者：

Capek, Richard Karel

Moreels, Iwan

Lambert, Karel

De Muynck, David ^{[1
]}

Zhao, Qiang ^{[2
,3
]}

Vantomme, Andre ^{[2
,3
]}

Vanhaecke, Frank ^{[1
]}

Hens, Zeger ^{[1
]}

机构：

[1] Univ Ghent, Dept Analyt Chem, B-9000 Ghent, Belgium

[2] Katholieke Univ Leuven, Inst Kern & Stralingsfys, B-3001 Louvain, Belgium

[3] Katholieke Univ Leuven, INPAC, B-3001 Louvain, Belgium

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 14期

关键词：

ABSORPTION CROSS-SECTION; CDSE NANOCRYSTALS; EXTINCTION COEFFICIENT; SIZE DEPENDENCE; SOLAR-CELLS; CDTE; CONFINEMENT; DISPERSION; GLASSES; ENERGY;

D O I：

10.1021/jp1001989

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Although wurtzite cadmium selenide quantum clots (wz-CdSe QDs) are one of the best explored colloidal nanomaterials, no detailed investigation of the optical properties of zincblende cadmium selenide quantum dots (zb-CdSe QDs) has been performed until now Typically, it is assumed that this material shows the same behavior as the wurtzite modification To investigate this, we present a study on the optical properties of zb-CdSe QDs, yielding the electronic hand gap to size relation (sizing curve), the extinction coefficient at short wavelengths, and the oscillator strength of the band gap transition Comparing these results with literature data on wz-CdSe QDs we observe, despite a deviation of the sizing curve for diameters above 4 urn, a similar extinction coefficient at stunt wavelengths and a smular oscillator strength

引用

页码：6371 / 6376

页数：6

共 29 条

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Adachi S., 1999, Optical Constants of Crystalline and Amorphous Semiconductors

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