Cr-inserted TiO2 thin films for chemical gas sensors

被引:48
作者
Alessandri, Ivano
Comini, Elisabetta
Bontempi, Elza
Faglia, Guido
Depero, Laura E.
Sberveglieri, Giorgio
机构
[1] Univ Brescia, LATEMAR, INSTM, I-25123 Brescia, Italy
[2] Univ Brescia, Chem Technol Lab, I-25123 Brescia, Italy
[3] Univ Brescia, CNR, INFM, I-25123 Brescia, Italy
[4] Univ Brescia, Sensor Lab, I-25123 Brescia, Italy
关键词
Cr-inserted TiO2; gas sensors; CO; ethanol; XRF microanalysis; GIXRD;
D O I
10.1016/j.snb.2007.06.020
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Cr-Ti oxide thin films were prepared by rf sputtering of Cr-inserted Ti targets. The roles played by Cr content and thermal treatments on both the structure and the electrical conductivity of thin films were investigated. Selected series of samples were tested as sensors for different gases like carbon monoxide and ethanol. In both the cases. samples exhibiting the best sensing performances were determined and possible correlations between structure and electrical properties were evidenced. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:312 / 319
页数:8
相关论文
共 41 条
[1]   Structural characterization of V2O5-TiO2 thin films deposited by RF sputtering from a titanium target with vanadium insets [J].
Alessandri, I ;
Comini, E ;
Bontempi, E ;
Sberveglieri, G ;
Depero, LE .
SENSORS AND ACTUATORS B-CHEMICAL, 2005, 109 (01) :47-51
[2]   Structural and electrical properties of Fe-doped TiO2 thin films [J].
Bally, AR ;
Korobeinikova, EN ;
Schmid, PE ;
Levy, F ;
Bussy, F .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1998, 31 (10) :1149-1154
[3]   ELECTRICAL-PROPERTIES OF CR-DOPED AND NB-DOPED TIO2 THIN-FILMS [J].
BERNASIK, A ;
RADECKA, M ;
REKAS, M ;
SLOMA, M .
APPLIED SURFACE SCIENCE, 1993, 65-6 :240-245
[4]   Temperature effects on the size of anatase crystallites in Mo-TiO2 and W-TiO2 powders [J].
Bregani, F ;
Casale, C ;
Depero, LE ;
NataliSora, I ;
Robba, D ;
Sangaletti, L ;
Toledo, GP .
SENSORS AND ACTUATORS B-CHEMICAL, 1996, 31 (1-2) :25-28
[5]   Sprayed and thermally evaporated SnO2 thin films for ethanol sensors [J].
Brousse, T ;
Schleich, DM .
SENSORS AND ACTUATORS B-CHEMICAL, 1996, 31 (1-2) :77-79
[6]   Influence of the fuel used in the microwave synthesis of Cr2O3 [J].
Cherian, M ;
Rao, MS ;
Manoharan, SS ;
Pradhan, A ;
Deo, G .
TOPICS IN CATALYSIS, 2002, 18 (3-4) :225-230
[7]   Production and characterization of titanium and iron oxide nano-sized thin films [J].
Comini, E ;
Sberveglieri, G ;
Ferroni, M ;
Guidi, V ;
Frigeri, C ;
Boscarino, D .
JOURNAL OF MATERIALS RESEARCH, 2001, 16 (06) :1559-1564
[8]   Photocatalytic degradation of phenol by TiO2 thin films prepared by sputtering [J].
Dumitriu, D ;
Bally, AR ;
Ballif, C ;
Hones, P ;
Schmid, PE ;
Sanjinés, R ;
Lévy, F ;
Pârvulescu, VI .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2000, 25 (2-3) :83-92
[9]   Interaction of carbon monoxide with anatase surfaces at high temperatures: Optimization of a carbon monoxide sensor [J].
Dutta, PK ;
Ginwalla, A ;
Hogg, B ;
Patton, BR ;
Chwieroth, B ;
Liang, Z ;
Gouma, P ;
Mills, M ;
Akbar, S .
JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (21) :4412-4422
[10]   Coalescence inhibition in nanosized titania films and related effects on chemoresistive properties towards ethanol [J].
Ferroni, M ;
Guidi, V ;
Martinelli, G ;
Roncarati, G ;
Comini, E ;
Sberveglieri, G ;
Vomiero, A ;
Mea, GD .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2002, 20 (02) :523-530