Highly Luminescent ZnO Quantum Dots Made in a Nonthermal Plasma

被引：92

作者：

Felbier, Patrick ^{[1
,2
]}

Yang, Jihua ^{[3
]}

Theis, Jens ^{[4
,5
]}

Liptak, Richard William ^{[6
]}

Wagner, Andrew ^{[3
]}

Lorke, Axel ^{[4
,5
]}

Bacher, Gerd ^{[1
,2
]}

Kortshagen, Uwe ^{[3
]}

机构：

[1] Univ Duisburg Essen, D-47057 Duisburg, Germany

[2] Univ Duisburg Essen, CENIDE, D-47057 Duisburg, Germany

[3] Univ Minnesota, Dept Mech Engn, Minneapolis, MN 55455 USA

[4] Univ Duisburg Essen, Fak Phys, D-47048 Duisburg, Germany

[5] Univ Duisburg Essen, CENIDE, D-47048 Duisburg, Germany

[6] Univ Minnesota, Dept Elect & Comp Engn, Minneapolis, MN 55455 USA

来源：

ADVANCED FUNCTIONAL MATERIALS | 2014年 / 24卷 / 14期

关键词：

zinc oxide; nanoparticles; quantum dots; luminescence; CHEMICAL-VAPOR SYNTHESIS; PARTICLE-SIZE; GAS-PHASE; PHOTOLUMINESCENCE; EMISSION; NANOPARTICLES; NANOCRYSTALS; PROPERTY; DEFECTS; OXYGEN;

D O I：

10.1002/adfm.201303449

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nonthermal plasmas allow the preparation of ligand-free quantum dots combining high production rates with superior crystalline quality and luminescence properties. Here, ZnO quantum dots are produced in a radiofrequency capacitively-coupled plasma, exhibiting size dependent photoluminescent quantum yields up to 60% after air exposurethe highest reported to date for any compound semiconductor quantum dots prepared in the gas phase. Systematic studies indicate the importance of the surface for the observed luminescence behavior. The high luminescent quantum yields in the visible range of the spectrum and the ligand-free, scalable synthesis make these quantum dots good candidates for light emitting applications.

引用

页码：1988 / 1993

页数：6