Deep level emission of ZnO nanoparticles deposited inside UV opal

被引：27

作者：

Abrarov, SM

Yuldashev, SU

Kim, TW

Kwon, YH

Kang, TW

机构：

[1] Dongguk Univ, Quantum Funct Semicond Res Ctr, Dept Phys, Seoul 100715, South Korea

[2] Hanyang Univ, Adv Semicond Res Ctr, Div Elect & Comp Engn, Seoul 133791, South Korea

来源：

OPTICS COMMUNICATIONS | 2006年 / 259卷 / 01期

关键词：

ZnO; photoluminescence; photonic band-gap; purcell effect; spray pyrolysis;

D O I：

10.1016/j.optcom.2005.08.048

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The temperature-dependent photoluminescence spectra of zinc oxide (ZnO) nanocrystals deposited inside the ultraviolet (UV) opal were studied. ZnO was grown in the voids between FCC packed SiO2 spheres using spray pyrolysis under ultrasonic vibration in the solution containing a zinc nitrate precursor. The ZnO nanoparticles inside opal matrix with UV photonic band-gap exhibit suppression of the excitonic emission and enhancement of the deep level emission. Suppression of the excitonic lines is due to the inhibition of spontaneous emission, while enhancement and broadening of the DL emission in the green spectral region is due to Purcell effect. The infiltration of ZnO nanoparticles inside the photonic crystal may be a useful technique to increase its emission efficiency in the selected spectral region. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：378 / 384

页数：7

共 41 条

[1] Effect of photonic band-gap on photoluminescence of ZnO deposited inside the green synthetic opal [J].