Increase in upturn power dissipation of surge suppressors due to highly defective nanostructure of zinc oxide

Shahrom Mahmud; Mat Abdullah; Ghanim Putrus

doi:10.1080/15533170500471730

Increase in upturn power dissipation of surge suppressors due to highly defective nanostructure of zinc oxide

Shahrom Mahmud, Mat Abdullah, Ghanim Putrus

Mathematics, Physics and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Nanodefects are probable root causes for the observed high power dissipation of ZnO-based surge suppression devices (SSDs). In this work, nanodefects are introduced by overgrinding ZnO for 100 hours via wet milling. Using FESEM, ZnO nanostructures are found to contain fine cracks, chipped-off surfaces and nanofragments. For the defective ZnO, the zinc relative atomic % (EDS analysis) is observed to be much larger accompanied by higher oxygen vacancy concentration as revealed by PL green emission. Average particle size drops from 0.24 μm to 0.19 μm and specific surface area increases from 4.72m2/g to 5.67m2/g. Fabricated SSDs with defective ZnO exhibits higher power dissipation and bigger grain resistivity. A model is proposed to provide a correlation between nanodefects and power dissipation. Copyright © 2006 Taylor & Francis Group, LLC.

Original language	English
Pages (from-to)	59-64
Journal	Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry
Volume	36
Issue number	1
DOIs	https://doi.org/10.1080/15533170500471730
Publication status	Published - 2006

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title = "Increase in upturn power dissipation of surge suppressors due to highly defective nanostructure of zinc oxide",

abstract = "Nanodefects are probable root causes for the observed high power dissipation of ZnO-based surge suppression devices (SSDs). In this work, nanodefects are introduced by overgrinding ZnO for 100 hours via wet milling. Using FESEM, ZnO nanostructures are found to contain fine cracks, chipped-off surfaces and nanofragments. For the defective ZnO, the zinc relative atomic % (EDS analysis) is observed to be much larger accompanied by higher oxygen vacancy concentration as revealed by PL green emission. Average particle size drops from 0.24 μm to 0.19 μm and specific surface area increases from 4.72m2/g to 5.67m2/g. Fabricated SSDs with defective ZnO exhibits higher power dissipation and bigger grain resistivity. A model is proposed to provide a correlation between nanodefects and power dissipation. Copyright {\textcopyright} 2006 Taylor & Francis Group, LLC.",

keywords = "Nanodefects, power dissipation, surge suppressor, varistor, ZnO",

author = "Shahrom Mahmud and Mat Abdullah and Ghanim Putrus",

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T1 - Increase in upturn power dissipation of surge suppressors due to highly defective nanostructure of zinc oxide

AU - Mahmud, Shahrom

AU - Abdullah, Mat

AU - Putrus, Ghanim

PY - 2006

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N2 - Nanodefects are probable root causes for the observed high power dissipation of ZnO-based surge suppression devices (SSDs). In this work, nanodefects are introduced by overgrinding ZnO for 100 hours via wet milling. Using FESEM, ZnO nanostructures are found to contain fine cracks, chipped-off surfaces and nanofragments. For the defective ZnO, the zinc relative atomic % (EDS analysis) is observed to be much larger accompanied by higher oxygen vacancy concentration as revealed by PL green emission. Average particle size drops from 0.24 μm to 0.19 μm and specific surface area increases from 4.72m2/g to 5.67m2/g. Fabricated SSDs with defective ZnO exhibits higher power dissipation and bigger grain resistivity. A model is proposed to provide a correlation between nanodefects and power dissipation. Copyright © 2006 Taylor & Francis Group, LLC.

AB - Nanodefects are probable root causes for the observed high power dissipation of ZnO-based surge suppression devices (SSDs). In this work, nanodefects are introduced by overgrinding ZnO for 100 hours via wet milling. Using FESEM, ZnO nanostructures are found to contain fine cracks, chipped-off surfaces and nanofragments. For the defective ZnO, the zinc relative atomic % (EDS analysis) is observed to be much larger accompanied by higher oxygen vacancy concentration as revealed by PL green emission. Average particle size drops from 0.24 μm to 0.19 μm and specific surface area increases from 4.72m2/g to 5.67m2/g. Fabricated SSDs with defective ZnO exhibits higher power dissipation and bigger grain resistivity. A model is proposed to provide a correlation between nanodefects and power dissipation. Copyright © 2006 Taylor & Francis Group, LLC.

KW - Nanodefects

KW - power dissipation

KW - surge suppressor

KW - varistor

KW - ZnO

U2 - 10.1080/15533170500471730

DO - 10.1080/15533170500471730

M3 - Article

SN - 1553-3174

VL - 36

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EP - 64

JO - Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry

JF - Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry

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ER -

Increase in upturn power dissipation of surge suppressors due to highly defective nanostructure of zinc oxide

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