Highly luminescent water-soluble CdTe quantum dots

被引：425

作者：

Wuister, SF ^{[1
]}

Swart, I ^{[1
]}

van Driel, F ^{[1
]}

Hickey, SG ^{[1
]}

Donegá, CD ^{[1
]}

机构：

[1] Univ Utrecht, Debye Res Inst, NL-3508 TA Utrecht, Netherlands

来源：

NANO LETTERS | 2003年 / 3卷 / 04期

关键词：

D O I：

10.1021/nl034054t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Colloidal CdTe quantum dots prepared in TOP/DDA (trioctylphosphine/dodecylamine) are transferred into water by the use of aminoethanethiol.HCl (AET) or mercaptopropionic acid (MPA). This results in an increase in the photoluminescence quantum efficiency and a longer exciton lifetime. For the first time, water-soluble semiconductor nanocrystals presenting simultaneously high band-edge photoluminescence quantum efficiencies (as high as 60% at room temperature), monoexponential exciton decays, and no observable defect-related emission are obtained.

引用

页码：503 / 507

页数：5

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