Self-assembled colloidal PbS quantum dots on GaAs substrates

被引：4

作者：

Lue, Wei ^{[1
]}

Yamada, Fumihiko ^{[1
]}

Kamiya, Itaru ^{[1
]}

机构：

[1] Toyota Technol Inst, Nagoya, Aichi 4688511, Japan

来源：

QUANTUM DOTS 2010 | 2010年 / 245卷

关键词：

NANOCRYSTALS;

D O I：

10.1088/1742-6596/245/1/012069

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report the fabrication and analysis of self-assembled monolayer and bilayer films of colloidal PbS quantum dots (QDs) on GaAs (001) substrates. 1,6-hexanedithiol is used as link molecule between QDs and GaAs substrates. Atomic force microscopy (AFM) and photoluminescence (PL) measurements confirm the formation of PbS QD film on GaAs. For the monolayer PbS QD film, the temperature-dependent PL shows a feature typical of close-packed film. For the bilayer PbS QD film fabricated from two different mean-sized PbS QDs, we find that the stacking sequence of QDs with different size affects the quantum yield and emission wavelength of the film.

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页数：4

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