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Dielectric-breakdown and Conduction-mechanism in a Thinned Alkali-free Glass
Hoikwan Lee,Michael T. Lanagan 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.65 No.7
The leakage current in alkali-free glass was analyzed to understand the dielectric breakdownbehavior and the potential conduction mechanism. The dielectric breakdown strength and theleakage current were increased after the thickness of the glass had been recuded. To identifythe predominant conduction mechanism, we carefully interpreted the dc voltage-current curves viafitting with various conduction mechanisms, e.g.) Poole-Frenkel emission, Schottky emission, spacecharge-limited current, and hopping conduction. The result suggested that the space-charge-limitedcurrent and the hopping conduction of thermally-excited carriers were the most likely mechanismsof conduction in alkali-free glass.