Efficient UV-blue photoluminescing thiol-stabilized water-soluble alloyed ZnSe(S) nanocrystals

被引：213

作者：

Shavel, A ^{[1
]}

Gaponik, N ^{[1
]}

Eychmüller, A ^{[1
]}

机构：

[1] Univ Hamburg, Inst Phys Chem, D-20146 Hamburg, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2004年 / 108卷 / 19期

关键词：

D O I：

10.1021/jp037941t

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：

The aqueous synthesis and post-preparative treatment of thiol-stabilized ZnSe colloidal nanocrystals (2-3 nm in size) have been studied. The post-preparative irradiation of the nanoparticles improves their luminescence properties leading to strong (up to 25-30% photoluminescence quantum yield) band gap UV-blue emission. The irradiation results in an incorporation of sulfur into the particles and in the formation of ZnSe(S) alloyed nanocrystals. The ZnSe(S) nanocrystals obtained were used for the fabrication of UV-blue-emitting layer-by-layer assembled films with a PL maximum at ca. 390 nm.

引用

页码：5905 / 5908

页数：4

共 2 条

[1] Biocompatible Water Soluble UV-Blue Emitting ZnSe Quantum Dots for Biomedical Applications
Andrade, Juliana J.
Brasil Junior, Aluizio G.
Barbosa, Breno J. A. P.
Azevedo Filho, Clayton A.
Leite, Elisa S.
Farias, Patricia M. A.
Fontes, Adriana
Santos, Beate S.
[J]. COLLOIDAL QUANTUM DOTS FOR BIOMEDICAL APPLICATIONS V, 2010, 7575
[2] Synthesis of Cd-free water-soluble ZnSe1-xTex nanocrystals with high luminescence in the blue region
Li, Chunliang
Nishikawa, Kazuhiro
Ando, Masanori
Enomoto, Hiroyuki
Murase, Norio
[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2008, 321 (02) : 468 - 476

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