Improvement of photoluminescence and lasing properties in ZnO submicron spheres by elimination of surface-trapped state

Tsen Fang Dai, Wei Chih Hsu, Hsu-Cheng Hsu

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We report on the enhancement of photoluminescence and laser action behaviors of ZnO submicron spheres fabricated by a sol-gel process. As annealing temperature increases, intense ultraviolet excitonic emission at room temperature can be observed. Upon pulsed excitations, the lasing threshold gradually decreases as annealed temperature increases, which is consistent with the results of the ratio of surface-trapped exciton to donorbound exciton emissions at low temperature. X-ray photoelectron spectroscopy confirmed that adsorbed OH bonds played a critical role in trapping species of exciton at the ZnO surface. The superior optical properties of high-annealing ZnO mainly result from the elimination of a surface-trapped state.

Original languageEnglish
Pages (from-to)27169-27174
Number of pages6
JournalOptics Express
Volume22
Issue number22
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

lasing
elimination
excitons
photoluminescence
annealing
ultraviolet emission
sol-gel processes
trapping
photoelectron spectroscopy
optical properties
thresholds
temperature
augmentation
room temperature
excitation
lasers
x rays

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

@article{ec02bf59bfb04abda008bae84d0cc080,
title = "Improvement of photoluminescence and lasing properties in ZnO submicron spheres by elimination of surface-trapped state",
abstract = "We report on the enhancement of photoluminescence and laser action behaviors of ZnO submicron spheres fabricated by a sol-gel process. As annealing temperature increases, intense ultraviolet excitonic emission at room temperature can be observed. Upon pulsed excitations, the lasing threshold gradually decreases as annealed temperature increases, which is consistent with the results of the ratio of surface-trapped exciton to donorbound exciton emissions at low temperature. X-ray photoelectron spectroscopy confirmed that adsorbed OH bonds played a critical role in trapping species of exciton at the ZnO surface. The superior optical properties of high-annealing ZnO mainly result from the elimination of a surface-trapped state.",
author = "Dai, {Tsen Fang} and Hsu, {Wei Chih} and Hsu-Cheng Hsu",
year = "2014",
month = "1",
day = "1",
doi = "10.1364/OE.22.027169",
language = "English",
volume = "22",
pages = "27169--27174",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "22",

}

Improvement of photoluminescence and lasing properties in ZnO submicron spheres by elimination of surface-trapped state. / Dai, Tsen Fang; Hsu, Wei Chih; Hsu, Hsu-Cheng.

In: Optics Express, Vol. 22, No. 22, 01.01.2014, p. 27169-27174.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Improvement of photoluminescence and lasing properties in ZnO submicron spheres by elimination of surface-trapped state

AU - Dai, Tsen Fang

AU - Hsu, Wei Chih

AU - Hsu, Hsu-Cheng

PY - 2014/1/1

Y1 - 2014/1/1

N2 - We report on the enhancement of photoluminescence and laser action behaviors of ZnO submicron spheres fabricated by a sol-gel process. As annealing temperature increases, intense ultraviolet excitonic emission at room temperature can be observed. Upon pulsed excitations, the lasing threshold gradually decreases as annealed temperature increases, which is consistent with the results of the ratio of surface-trapped exciton to donorbound exciton emissions at low temperature. X-ray photoelectron spectroscopy confirmed that adsorbed OH bonds played a critical role in trapping species of exciton at the ZnO surface. The superior optical properties of high-annealing ZnO mainly result from the elimination of a surface-trapped state.

AB - We report on the enhancement of photoluminescence and laser action behaviors of ZnO submicron spheres fabricated by a sol-gel process. As annealing temperature increases, intense ultraviolet excitonic emission at room temperature can be observed. Upon pulsed excitations, the lasing threshold gradually decreases as annealed temperature increases, which is consistent with the results of the ratio of surface-trapped exciton to donorbound exciton emissions at low temperature. X-ray photoelectron spectroscopy confirmed that adsorbed OH bonds played a critical role in trapping species of exciton at the ZnO surface. The superior optical properties of high-annealing ZnO mainly result from the elimination of a surface-trapped state.

UR - http://www.scopus.com/inward/record.url?scp=84919969274&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84919969274&partnerID=8YFLogxK

U2 - 10.1364/OE.22.027169

DO - 10.1364/OE.22.027169

M3 - Article

VL - 22

SP - 27169

EP - 27174

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 22

ER -