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The effects of interface scattering on thermoelectric properties of film thermoelectric materials
  • ISSN号：0023-074X
  • 期刊名称：Chinese Science Bulletin
  • 时间：0
  • 页码：-
  • 分类：TN37[电子电信—物理电子学] TB383[一般工业技术—材料科学与工程]
  • 作者机构：[1]Key Laboratory of Mechanics on Environment and Disaster in Western China, The Ministry of Education of China, and Department of Mechanics and Engineering Sciences, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China
  • 相关基金：The work was supported by the National Natural Science Foundation of China （11072093, 11121202 and 11372120）. and the PhD Program Foundation of Ministry of Educa- tion of China （20110211110023）.
  • 相关项目：多铁性磁电材料结构的动态多场耦合非线性力学特征及细观机制研究
作者： Xiaodong Jia|Gao Yuanwen|
关键词： 薄膜材料, 界面散射, 热电性能, 热电材料, SEEBECK系数, 表面散射, 多晶结构, 界面效应, Interface scattering , Thermoelectricproperties, Polycrystalline thermoelectric films
中文摘要：

接口完成的考虑的一个理论模型被建立预言 Seebeck 系数和电的传导性为一多晶热电(TE ) 变瘦电影。散布机制的接口(包括散布的电影表面和散布的谷物边界) 在这部电影的运输电子，材料被揭示。在 Seebeck 系数，电的传导性和接口参数(电影表面思考系数和谷物边界传播系数) 之间的关系然后关于建议模型被讨论。在在尺寸限制引起的电影和体积材料之间的 TE 性质的差别被调查。结果显示更高的谷物数字导致更强壮的谷物边界散布和 TE 性质的更不同的尺寸效果。与表面效果相对照，谷物边界效果与多晶的结构在 TE 电影的 TE 性质起一个主要作用。

英文摘要：

A theoretical model taking into consideration the interface effects is established to predict the Seebeck coefficient and the electrical conductivity for a polycrystalline thermoelectric （TE） thin film. The interface scattering mechanisms （including the film-surface scattering and grain-boundary scattering） of the transport electrons in the film materials are revealed. The relations between the Seebeck coefficient, the electrical conductivity and the interface parameters （the film-surface reflection coefficient and the grain-boundary transmission coefficient） are then discussed with respect to the proposed model. The differences in the TE properties between the films and bulk materials caused by size restriction are investigated. The results indicate that the higher grain number leads to stronger grain-boundary scattering and more distinct size effects of the TE properties. In contrast to the surface effect, the grain-boundary effect plays a main role in the TE properties of TE films with polycrystalline structures.

同期刊论文项目
复杂环境与介质相互作用的非线性力学
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多铁性磁电材料结构的动态多场耦合非线性力学特征及细观机制研究
期刊论文 26 会议论文 22
超导磁体多场耦合非线性力学行为与超导性能的相互作用研究
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期刊信息
  • 《科学通报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国科学院
  • 主编：周光召
  • 地址：北京东黄城根北街16号
  • 邮编：100717
  • 邮箱：csb@scichina.org
  • 电话：010-64036120 64012686
  • 国际标准刊号：ISSN：0023-074X
  • 国内统一刊号：ISSN：11-1784/N
  • 邮发代号:80-213
  • 获奖情况:
  • 首届国家期刊奖,中国期刊方阵“双高”期刊,第三届中国出版政府奖
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  • 被引量:81792