Synthesis of ZnO nanoparticles for varistor application using Zn-substituted aerosol OT microemulsion

被引:214
作者
Singhal, M
Chhabra, V
Kang, P
Shah, DO
机构
[1] UNIV FLORIDA,CTR SURFACE SCI & ENGN,GAINESVILLE,FL 32611
[2] UNIV FLORIDA,DEPT CHEM ENGN,GAINESVILLE,FL 32611
[3] UNIV FLORIDA,DEPT ANESTHESIOL,GAINESVILLE,FL 32611
关键词
nanostructures; oxides; electron microscopy; X-ray diffraction; electrical properties;
D O I
10.1016/S0025-5408(96)00175-4
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper describes a new method for the synthesis of zinc oxide nanoparticles using ethanol-in-oil microemulsions with Zn-DEHSS (diethylhexyl sulfosuccinate) as surfactant. The zinc oxide nanoparticles find application in varistors and other functional devices. These particles have been characterized by X-ray diffraction, TEM, and BET surface area. Microemulsion droplets were characterized by quasi elastic light scattering (QELS). Varistors formed from doped zinc oxide nanoparticles finds application as low voltage surge devices with low leakage current and high coefficient of nonlinearity (alpha). In this paper, we have shown that the critical voltage of the varistor is related to the grain size which is related to size of ZnO particles. The smaller ZnO particles lead to larger grain size, thereby lowering the critical voltage. Copyright (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:239 / 247
页数:9
相关论文
共 28 条
[11]   MICROEMULSION MEDIATED SYNTHESIS OF ZINC-OXIDE NANOPARTICLES FOR VARISTOR STUDIES [J].
HINGORANI, S ;
PILLAI, V ;
KUMAR, P ;
MULTANI, MS ;
SHAH, DO .
MATERIALS RESEARCH BULLETIN, 1993, 28 (12) :1303-1310
[12]   SOL-GEL PROCESSING OF VARISTOR POWDERS [J].
HOHENBERGER, G ;
TOMANDL, G .
JOURNAL OF MATERIALS RESEARCH, 1992, 7 (03) :546-548
[13]  
HOU MJ, 1988, INTERFACIAL PHENOMEN, P443
[14]  
KAMATA K, 1984, CHEM LETT, P2021, DOI 10.1246/cl.1984.2021
[15]  
KONNO K, 1984, J CHEM SOC JPN, V6, P815
[16]   PHOTOCHEMISTRY AND RADIATION-CHEMISTRY OF SEMICONDUCTOR COLLOIDS .27. PREPARATION OF COLLOIDAL PBO2 AND VARIOUS ELECTRON-TRANSFER PROCESSES [J].
KUMAR, A ;
HENGLEIN, A ;
WELLER, H .
JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (06) :2262-2266
[17]  
LEUNG R, 1985, ACS SYM SER, V272, P325
[18]   PHYSICS OF METAL-OXIDE VARISTORS [J].
LEVINSON, LM ;
PHILIPP, HR .
JOURNAL OF APPLIED PHYSICS, 1975, 46 (03) :1332-1341
[19]   CADMIUM-SULFIDE OF SMALL DIMENSIONS PRODUCED IN INVERTED MICELLES [J].
LIANOS, P ;
THOMAS, JK .
CHEMICAL PHYSICS LETTERS, 1986, 125 (03) :299-302
[20]  
LUMFIMPADIO N, 1986, SURFACTANTS SOLUTION, V3, P483