Gas sensing properties of Al-doped ZnO for UV-activated CO detection

被引：52

作者：

Dhahri, R. ^{[1
,2
]}

Hjiri, M. ^{[1
,2
]}

El Mir, L. ^{[1
,3
]}

Bonavita, A. ^{[2
]}

Iannazzo, D. ^{[2
]}

Latino, M. ^{[2
]}

Donato, N. ^{[2
]}

Leonardi, S. G. ^{[2
]}

Neri, G. ^{[2
]}

机构：

[1] Fac Sci Gabes, Lab Phys Mat & Nanomat Appl Environm, Gabes 6072, Tunisia

[2] Univ Messina, Dept Elect Engn Ind Chem & Engn, I-98166 Messina, Italy

[3] Al Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Sci, Dept Phys, Riyadh 11623, Saudi Arabia

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2016年 / 49卷 / 13期

关键词：

Al-doped ZnO; sol-gel; nanoparticles; UV irradiation; CO sensor; ZINC-OXIDE; NO2; SENSORS;

D O I：

10.1088/0022-3727/49/13/135502

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Al-doped ZnO (AZO) samples were prepared using a modified sol-gel route and charaterized by means of trasmission electron microscopy, x-ray diffraction and photoluminescence analysis. Resistive planar devices based on thick films of AZO deposited on interdigitated alumina substrates were fabricated and investigated as UV light activated CO sensors. CO sensing tests were performed in both dark and illumination condition by exposing the samples to UV radiation (lambda = 400 nm). Under UV light, Al-doped ZnO gas sensors operated at lower temperature than in dark. Furthermore, by photoactivation we also promoted CO sensitivity and made signal recovery of AZO sensors faster. Results demonstrate that Al-doped ZnO might be a promising sensing material for the detection of CO under UV illumination.

引用

页数：7

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