An Alternate Route to High-Quality ZnSe and Mn-Doped ZnSe Nanocrystals

被引：118

作者：

Acharya, Shinjita ^{[1
]}

Sarma, D. D. ^{[3
]}

Jana, Nikhil R. ^{[1
]}

Pradhan, Narayan ^{[1
,2
]}

机构：

[1] Indian Assoc Cultivat Sci, Ctr Adv Mat, Kolkata 700032, India

[2] Indian Assoc Cultivat Sci, Dept Mat Sci, Kolkata 700032, India

[3] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2010年 / 1卷 / 02期

关键词：

CDS NANOCRYSTALS; EMITTERS; NANOPARTICLES; CORE/SHELL; NANOWIRES; EFFICIENT; WIRES; SHAPE;

D O I：

10.1021/jz900291a

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：

We report here a synthetic route for high-quality Mn-doped ZnSe nanocrystals using selenourea as a selenium source, avoiding the more conventional route-using tributylphosphine (TBP) that restricts the growth of spherical ZnSe nanocrystals below 5 nm in size, besides being highly toxic and pyrophoric. Spherical ZnSe nanocrystals with unprecendented sizes (up to 12 nm) are synthesized, the large size of the host helps to keep dopant ions well inside the nanocrystal leading to intense and stable dopant emission. Mn-doped ZnSe nanocrystals with more than 50% quantum yield (QY) are synthesized in this method and found to be stable both in aqueous and nonaqueous dispersions for months.

引用

页码：485 / 488

页数：4

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