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CAS IR Grid
机构
长春光学精密机械与物... [1]
兰州化学物理研究所 [1]
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OAI收割 [2]
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会议论文 [1]
期刊论文 [1]
发表日期
2012 [1]
2009 [1]
学科主题
材料科学与物理化学 [1]
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Synthesis of ordered mesoporous silicon oxycarbide monoliths via preceramic polymer nanocasting
期刊论文
OAI收割
Microporous and Mesoporous Materials, 2012, 卷号: 147, 期号: 1, 页码: 252-258
作者:
Yuan XY(袁晓燕)
;
Jin HL(金贺林)
;
Yan XB(阎兴斌)
;
Cheng LF(程赖飞)
;
Hu LT(胡丽天)
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浏览/下载:28/0
  |  
提交时间:2013/07/12
SiOC ceramic
Monolith
Mesoporous
Nanocasting
Polymer-derived ceramic
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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  |  
浏览/下载:66/0
  |  
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.