Journal
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 70, Issue 12, Pages 3585-3590Publisher
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.70.3585
Keywords
AgI; thin film; ionic conductivity; interface; SiO2 glass substrate
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The temperature dependence of ionic conductivity of the AgI films on SiO2 glass (quartz grass) substrates has been measured for various film thickness. AgI thin films showed conductivity enhancement, and the ionic conductivity shows an increase with decreasing the thickness. The experimental results suggest the existence of the high ionic conduction region at the SiO2-AgI boundary. The thickness dependence of ionic conductivity of the AgI film was explained by a simple two layer model; high ionic conduction region and bulk ionic conduction region. Average ionic conductivity sigma (lambda) and thickness lambda of the high ionic conduction region at 300 K were estimated as 4.65 x 10(-5) Omega (-1) cm(-1) and 0.28 mum, respectively.
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