One-pot aqueous synthesis of high quality near infrared emitting Cd1-xHgxTe nanocrystals

被引：35

作者：

Lesnyak, Vladimir ^{[1
]}

Lutich, Andrey ^{[2
,3
]}

Gaponik, Nikolai ^{[1
]}

Grabolle, Markus ^{[4
]}

Plotnikov, Alexei ^{[5
]}

Resch-Genger, Ute ^{[4
]}

Eychmueller, Alexander ^{[1
]}

机构：

[1] Tech Univ Dresden, D-01062 Dresden, Germany

[2] Univ Munich, Dept Phys, Photon & Optoelect Grp, D-80799 Munich, Germany

[3] Univ Munich, CeNS, D-80799 Munich, Germany

[4] BAM Fed Inst Mat Res & Testing, D-12489 Berlin, Germany

[5] Helmholtz Ctr Berlin Mat & Energy, D-14109 Berlin, Germany

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2009年 / 19卷 / 48期

关键词：

CORE-SHELL NANOCRYSTALS; WET CHEMICAL-SYNTHESIS; QUANTUM DOTS; CDTE NANOCRYSTALS; CDHGTE NANOCRYSTALS; HGTE NANOCRYSTALS; ROOM-TEMPERATURE; WATER; LUMINESCENCE; COMPOSITES;

D O I：

10.1039/b913200g

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：

An efficient one-pot aqueous synthesis of alloyed Cd1-xHgxTe nanocrystals (NCs) is realized and the influence of the experimental conditions and of the initial composition of the NCs on their optical properties is discussed. This approach obtains stable NCs with an emission tunable in the red and the near infrared (NIR) spectral regions ranging from 640 to 1600 nm thereby covering the second and third telecommunication windows. The high photoluminescence quantum efficiency (PL QE) of these colloids with values up to 55% for red emitting, and up to 60% for NIR emitting samples is indicative of the excellent quality of the NCs.

引用

页码：9147 / 9152

页数：6

共 39 条

[1] Synthesis of Amphiphilic CdTe Nanocrystals [J].