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

Journal Article · Sat Feb 01 00:00:00 EST 1997 · Materials Research Bulletin

DOI:https://doi.org/10.1016/S0025-5408(96)00175-4· OSTI ID:455245

Singhal, M; Chhabra, V; Kang, P; Shah, D O ^[1]

---

1. Univ. of Florida, Gainesville, FL (United States)

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, the authors 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.

• Sponsoring Organization: Electric Power Research Inst., Palo Alto, CA (United States); National Science Foundation, Washington, DC (United States)
• OSTI ID: 455245
• Journal Information: Materials Research Bulletin, Vol. 32, Issue 2; Other Information: PBD: Feb 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
SYNTHESIS
ZINC OXIDES
SEMICONDUCTOR RESISTORS
MICROEMULSIONS
PARTICLE SIZE
SURFACE AREA
GRAIN SIZE
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA