Luminescence response of ZnO nanowires to gas adsorption

被引：63

作者：

Baratto, C. ^{[1
]}

Todros, S. ^{[1
]}

Faglia, G. ^{[1
]}

Comini, E. ^{[1
]}

Sberveglieri, G. ^{[1
]}

Lettieri, S. ^{[2
,3
]}

Santamaria, L. ^{[3
]}

Maddalena, P. ^{[2
,3
]}

机构：

[1] Univ Brescia, CNR INFM, SENSOR Lab, I-25133 Brescia, Italy

[2] CNR INFM COHERENTIA, I-80126 Naples, Italy

[3] Univ Naples Federico II, Dipartimento Sci Fisiche, I-80126 Naples, Italy

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2009年 / 140卷 / 02期

关键词：

Zinc oxide nanowires; Photoluminescence; Optochemical sensors; Nitrogen dioxide; ROOM-TEMPERATURE; THIN-FILMS; NO2; PHOTOLUMINESCENCE; NANOSTRUCTURES; EPITAXY; SENSORS; GROWTH;

D O I：

10.1016/j.snb.2009.05.018

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Zinc oxide nanowires were synthesized by means of evaporation-condensation technique and their green photoluminescence emission at room temperature was studied during exposure to nitrogen dioxide, ethanol and humidity. A reversible modification of static photoluminescence efficiency was obtained upon exposure to low concentrations of nitrogen dioxide. The optical sensor was able to detect NO2 values as low as 0.1 ppm in dry air, that is the attention level for outdoor detection. Time-resolved photoluminescence measurements in presence of NO2 showed small modification of recombination rates and lifetimes due to introduction of quencher gas. The results support a surface static quenching model, according to which the gas molecules suppress a fraction of radiative transitions instead of merely reducing their probabilities. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：461 / 466

页数：6

共 35 条

[1] Adsorption of O2, H2, CO, NH3, and NO2 on ZnO nanotube:: A density functional theory study
An, Wei
Wu, Xiaojun
Zeng, X. C.
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (15) : 5747 - 5755
[2] Optically pumped lasing of ZnO at room temperature
Bagnall, DM
Chen, YF
Zhu, Z
Yao, T
Koyama, S
Shen, MY
Goto, T
[J]. APPLIED PHYSICS LETTERS, 1997, 70 (17) : 2230 - 2232
[3] Low temperature selective NO2 sensors by nanostructured fibres of ZnO
Baratto, C
Sberveglieri, G
Onischuk, A
Caruso, B
di Stasio, S
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 2004, 100 (1-2) : 261 - 265
[4] Mathematical functions for the analysis of luminescence decays with underlying distributions 1. Kohlrausch decay function (stretched exponential)
Berberan-Santos, MN
Bodunov, EN
Valeur, B
[J]. CHEMICAL PHYSICS, 2005, 315 (1-2) : 171 - 182
[5] Single crystal ZnO nanowires as optical and conductometric chemical sensor
Comini, E.
Baratto, C.
Faglia, G.
Ferroni, M.
Sberveglieri, G.
[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2007, 40 (23) : 7255 - 7259
[6] Quasi-one dimensional metal oxide semiconductors: Preparation, characterization and application as chemical sensors
Comini, E.
Baratto, C.
Faglia, G.
Ferroni, M.
Vomiero, A.
Sberveglieri, G.
[J]. PROGRESS IN MATERIALS SCIENCE, 2009, 54 (01) : 1 - 67
[7] Metal oxide nano-crystals for gas sensing
Comini, Elisabetta
[J]. ANALYTICA CHIMICA ACTA, 2006, 568 (1-2) : 28 - 40
[8] Defect emissions in ZnO nanostructures
Djurisic, A. B.
Leung, Y. H.
Tam, K. H.
Hsu, Y. F.
Ding, L.
Ge, W. K.
Zhong, Y. C.
Wong, K. S.
Chan, W. K.
Tam, H. L.
Cheah, K. W.
Kwok, W. M.
Phillips, D. L.
[J]. NANOTECHNOLOGY, 2007, 18 (09)
[9] Photoluminescence and electron paramagnetic resonance of ZnO tetrapod structure
Djurisic, AB
Choy, WCH
Roy, VAL
Leung, YH
Kwong, CY
Cheah, KW
Rao, TKG
Chan, WK
Lui, HT
Surya, C
[J]. ADVANCED FUNCTIONAL MATERIALS, 2004, 14 (09) : 856 - 864
[10] Adsorption effects of NO2 at ppm level on visible photoluminescence response of SnO2 nanobelts -: art. no. 011923
Faglia, G
Baratto, C
Sberveglieri, G
Zha, M
Zappettini, A
[J]. APPLIED PHYSICS LETTERS, 2005, 86 (01) : 011923 - 1

← 1 2 3 4 →