bullet Sensors & Transducers Journal

    (ISSN 1726- 5479)

205.767

2008 e-Impact Factor

25 Top Downloaded Articles

Journal Subscription 2009/2010

Editorial Calendar 2009

Submit an Article

Editorial Board

Current Issue

Sensors & Transducers journal's cover

Sensors & Transducers Journal 2008

Sensors & Transducers Journal 2007

2000-2002 S&T e-Digest Contents

2003 S&T e-Digest Contents

2004 S&T e-Digest Contents

2005 S&T e-Digest Contents

2006 S&T e-Digest Contents

 

Best Articles 2008

 

 

 

Vol. 104, Issue 5, April 2009, pp.76-86

 

 

Bullet

 

Effect of Yttria on Gas Sensitivity of Tungsten Trioxide

 

a,* M. H. SHAHROKH ABADI, aM. N. HAMIDON, aRahman WAGIRAN,
bAbdul Halim SHAARI, aNorhisam MISRON, cNorhafizah ABDULLAH

aElectrical and Electronic Department, Engineering Faculty

bDepartment of Physics, Science Faculty

 cDepartment of Chemical and Environmental of Engineering Faculty

Universiti Putra Malaysia 43400, Serdang, Selangor, Malaysia

Tel: +603-89466309, fax: +603-88466327

E-mail: mhshahrokh@gmail.com

 

 

Received: 11 March 2009   /Accepted: 19 May 2009   /Published: 25 May 2009

 

Abstract: The influence of 5, 10, and 15 wt % of yttrium oxide on gas sensitivity of tungsten oxide was studied. The prepared powders were mixed with a binder and printed onto the electrode surface using thick-film screen printing. Microstructure, electrical conductivity, and gas sensitivity of films were dependant on the ratio of doped yttria, and thickness of the film. Increasing the ratio of yttria beyond 10 wt % causes a deficient electrical conductivity and very low sensitivity of the films when they exposed to the organic solvent. Higher sensitivity to the solvents was observed at 10 wt % of doping in both thickness of 7 and 15 m. Selectivity, response time, and thermal dependency of responses to the solvents were compared with a commercial alcohol sensor.

 

Keywords: Gas sensor, Thick film, Nano powder, Tungsten trioxide, Yttrium oxide

 

 Acrobat reader logo Click <here> or title of paper to download the full pages article (1.4 Mb)

 

 

 

 


1999 - 2009 Copyright , International Frequency Sensor Association (IFSA). All Rights Reserved.


Home - News - Links - Archives - Tools - Standardization - Patents - Marketplace - Projects - Wish List - Subscribe - Search - Membership - Submit Press Release

 Members Area -Sensors Portal -Training Courses - S&T Digest - For advertisers - Bookstore - Forums - Polls - Sensor Jobs - e-Shop - Site Map