Scanning tunneling microscopy and spectroscopy of tin oxide films

被引：3

作者：

Castro, MS ^{[1
]}

Suárez, MP ^{[1
]}

Aldao, CM ^{[1
]}

机构：

[1] Univ Mar del Plata, Inst Mat Sci & Technol, CONICET, RA-7600 Mar Del Plata, Argentina

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2001年 / 21卷 / 08期

关键词：

defects; electrical properties; films; grain boundaries; sensors; SnO2;

D O I：

10.1016/S0955-2219(00)00297-1

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

SnO2 thick films have been studied with scanning tunneling microscopy and spectroscopy. Topographic images revealed grains with an average diameter of about 100 nm and roughness of 50 nm. Tunneling current-voltage characteristics measured indicate that these small grains present a non rectifying behavior. Temperature dependence of electrical conductivity during healing and cooling and resistivity transients at step isothermal changes in oxygen pressure were also investigated. Results are consistent with those of STM and confirm that oxygen adsorption and diffusion into the tin oxide grain account for the observed conductance changes. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1115 / 1119

页数：5

共 16 条

[1] CONDUCTION MODELS IN GAS-SENSING SNO2 LAYERS - GRAIN-SIZE EFFECTS AND AMBIENT ATMOSPHERE INFLUENCE [J].

BARSAN, N .

SENSORS AND ACTUATORS B-CHEMICAL, 1994, 17 (03) :241-246

[2] Influence of frozen distributions of oxygen vacancies on tin oxide conductance [J].

Blaustein, G ;

Castro, MS ;

Aldao, CM .

SENSORS AND ACTUATORS B-CHEMICAL, 1999, 55 (01) :33-37

[3] Effects of thermal treatments on the conductance of tin oxide [J].

Castro, MS ;

Aldao, CM .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2000, 20 (03) :303-307

[4] SURFACE-CHEMISTRY OF TIN OXIDE-BASED GAS SENSORS [J].

GAGGIOTTI, G ;

GALDIKAS, A ;

KACIULIS, S ;

MATTOGNO, G ;

SETKUS, A .

JOURNAL OF APPLIED PHYSICS, 1994, 76 (08) :4467-4471

[5] ARE MODULATIONS OF THE SCHOTTKY SURFACE-BARRIER THE ONLY EXPLANATION FOR THE GAS-SENSING EFFECTS IN SINTERED SNO2 [J].

IONESCU, R ;

MOISE, C ;

VANCU, A .

APPLIED SURFACE SCIENCE, 1995, 84 (03) :291-297

[6] Application of nano-crystalline porous tin oxide thin film for CO sensing [J].

Jin, ZH ;

Zhou, HJ ;

Jin, ZL ;

Savinell, RF ;

Liu, CC .

SENSORS AND ACTUATORS B-CHEMICAL, 1998, 52 (1-2) :188-194

[7] ANALYSIS OF THE CHANGE IN THE CARRIER CONCENTRATION OF SAO(2) THIN-FILM GAS SENSOR [J].

KANAMORI, M ;

SUZUKI, E ;

OHYA, Y ;

TAKAHASHI, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1994, 33 (12A) :6680-6683

[8]

MADOU MJ, 1989, CHEM SENSING SOLID S, P6

[9]

MARTINELLI G, 1992, SENSOR ACTUAT B-CHEM, V7, P1717

[10] Solid state gas sensors [J].

Moseley, PT .

MEASUREMENT SCIENCE AND TECHNOLOGY, 1997, 8 (03) :223-237

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