Comparison of classical and fluctuation-enhanced gas sensing with PdxWO3 nanoparticle films

被引：55
作者：
Ederth, J
Smulko, JM
Kish, LB [1 ]
Heszler, P
Granqvist, CG
机构：
[1] Texas A&M Univ, Dept Elect Engn, College Stn, TX 77843 USA
[2] Uppsala Univ, Angstrom Lab, Dept Engn Sci, SE-75121 Uppsala, Sweden
[3] Gdansk Tech Univ, WETiL, PL-80952 Gdansk, Poland
[4] Univ Szeged, Hungarian Acad Sci, Res Grp Laser Phys, H-6701 Szeged, Hungary
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2006年 / 113卷 / 01期
关键词：
gas sensors; gas detection; gas evaporation; resistance fluctuation; tungsten oxide;
D O I：
10.1016/j.snb.2005.03.009
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Nanoparticle films of Pd3WO3, with x being 0.01 or 0.12, were made by dual-beam gas evaporation. The stochastic signal component (fluctuation-enhanced signal) originating from resistance fluctuations and the dc resistance (classical sensor signal) were measured during exposure to ethanol and hydrogen gas. For ethanol concentrations exceeding 50 ppm changes in the resistance fluctuations gave 300 times larger detection sensitivity than changes in the dc resistance. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：310 / 315
页数：6
相关论文
共 24 条
[1]  
BENDRAT JS, 2000, RANDOM DATA ANAL MEA
[2]   Pd-doped SnO2 thin films deposited by assisted ultrasonic spraying CVD for gas sensing:: selectivity and effect of annealing [J].
Briand, D ;
Labeau, M ;
Currie, JF ;
Delabouglise, G .
SENSORS AND ACTUATORS B-CHEMICAL, 1998, 48 (1-3) :395-402
[3]   Ag dopedWO3-based powder sensor for the detection of NO gas in air [J].
Chen, L ;
Tsang, SC .
SENSORS AND ACTUATORS B-CHEMICAL, 2003, 89 (1-2) :68-75
[4]  
Cullity B.D., 1956, ELEMENTS XRAY DIFFRA
[5]   In situ electrical transport during isothermal annealing of nanocrystalline gold films [J].
Ederth, J ;
Kish, LB ;
Olsson, E ;
Granqvist, CG .
JOURNAL OF APPLIED PHYSICS, 2002, 91 (03) :1529-1535
[6]   Thermal stability of nanocrystalline gold studied by X-ray diffraction method [J].
Inami, T ;
Okuda, S ;
Maeta, H ;
Ohtsuka, H .
MATERIALS TRANSACTIONS JIM, 1998, 39 (10) :1029-1032
[7]   Extracting information from noise spectra of chemical sensors: single sensor electronic noses and tongues [J].
Kish, LB ;
Vajtai, R ;
Granqvist, CG .
SENSORS AND ACTUATORS B-CHEMICAL, 2000, 71 (1-2) :55-59
[8]   1-F NOISE IN THERMO EMF OF INTRINSIC AND EXTRINSIC SEMICONDUCTORS [J].
KLEINPENNING, TG .
PHYSICA, 1974, 77 (01) :78-98
[9]  
LANTTO V, 1992, GAS SENSORS
[10]   Os and Pd modified tin oxide films for sensors by the sol gel process [J].
Licciulli, A ;
Mazzarelli, S ;
De, G ;
Siciliano, P ;
Vasanelli, L ;
Rella, R .
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2001, 21 (03) :195-201
123