Correlation between Morphology and Defect Luminescence in Precipitated ZnO Nanorod Powders

被引：63

作者：

Bitenc, Marko ^{[3
]}

Podbrscek, Peter ^{[3
]}

Orel, Zorica Crnjak ^{[3
]}

Cleveland, Michael A. ^{[2
]}

Paramo, J. Antonio ^{[1
]}

Peters, Raul M. ^{[1
]}

Strzhemechny, Yuri M. ^{[1
]}

机构：

[1] Texas Christian Univ, Dept Phys & Astron, Ft Worth, TX 76129 USA

[2] Austin Coll, Dept Phys, Sherman, TX 75090 USA

[3] Natl Inst Chem, Ljubljana 1000, Slovenia

来源：

CRYSTAL GROWTH & DESIGN | 2009年 / 9卷 / 02期

基金：

美国国家科学基金会;

关键词：

ZINC-OXIDE NANOWIRES; OPTICAL-PROPERTIES; PHOSPHOR POWDERS; CATALYTIC GROWTH; PHOTOLUMINESCENCE; PARTICLES; EXCITONS; NANOSTRUCTURES; MECHANISMS;

D O I：

10.1021/cg8008078

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

ZnO nanorods were prepared at relatively low temperatures by homogeneous precipitation from zinc nitrate and urea in a water/ethylene glycol mixture. Crystal size and morpliology are controlled by growth time and solvent composition. We observed a strong correlation between nanocrystals' size/morphology and their optoelectronic defect-related properties. Smaller crystallites exhibited intense deep-defect luminescence and enhanced emission related to near-surface excitonic recombination. Longer growth times lead to formation of well-defined nanorods with hexagonal symmetry exhibiting reduced defect emission.

引用

页码：997 / 1001

页数：5

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