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Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
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长春光学精密机械与物... [1]
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OAI收割 [1]
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会议论文 [1]
发表日期
2009 [1]
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Electron transport in polymer-derived amorphous silicon oxycarbonitride ceramics (EI CONFERENCE)
会议论文
OAI收割
作者:
Zhang L.
;
Wang Y.
;
Wang Y.
;
Wang Y.
;
Wang Y.
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提交时间:2013/03/25
The electron transport behavior of polymer-derived amorphous silicon oxycarbonitride ceramics is studied by measuring their temperature-dependent electrical conductivities. The experimental results are analyzed using theoretical models. The results reveal that the materials exhibit three conduction mechanisms: conduction in extended states
conduction in band tails
and conduction in localized states. Particularly
it is found that in a low-temperature regime
the conduction of the materials follows a band tail hopping mechanism
rather than the previously assumed variable range hopping mechanism. The results also reveal that energy gaps such as EC-E F and EC-EA decrease with increasing pyrolysis temperature. 2009 The American Ceramic Society.