Hydrogen sensing by sol-gel grown NiO and NiO:Li thin films

被引：52

作者：

Sta, I. ^{[1
]}

Jlassi, M. ^{[1
]}

Kandyla, M. ^{[3
]}

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

Koralli, P. ^{[3
]}

Allagui, R. ^{[1
]}

Kompitsas, M. ^{[3
]}

Ezzaouia, H. ^{[1
]}

机构：

[1] Res & Technol Ctr Energy, Photovolta Lab, Hammam Lif 2050, Tunisia

[2] Natl Sch Elect & Telecommun Sfax, Sfax 3018, Tunisia

[3] Natl Hellen Res Fdn, Theoret & Phys Chem Inst, Athens 11635, Greece

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 626卷

关键词：

Nickel oxide; Lithium doping; Sol-gel; Thin films; Spin coating; Hydrogen gas sensor; PULSED-LASER DEPOSITION; LI-DOPED NIO; GAS SENSORS; ELECTRICAL-PROPERTIES; SURFACE MODIFICATION; CATALYTIC-PROPERTIES; CONDUCTING POLYMERS; ROOM-TEMPERATURE; SPRAY-PYROLYSIS; PERFORMANCE;

D O I：

10.1016/j.jallcom.2014.11.151

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hydrogen sensors have been prepared using nickel oxide (NiO) and lithium-doped nickel oxide (NiO:Li) thin films, deposited on glass substrates by the sol-gel spin coating technique. The surface morphology, structure, optical and electrical properties of the obtained films were studied. Hydrogen sensing results are presented for three operating temperatures (140, 160, and 180 degrees C) and for hydrogen concentrations ranging from 1000 to 15,000 ppm in synthetic air. The NiO and NiO:Li (2% and 8% doping concentrations) sensors show maximum responses for the operating temperature of 180 degrees C. When tested at different hydrogen concentrations in air, the lithium-doped NiO sensors showed a higher response than the undoped NiO films. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：87 / 92

页数：6

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