...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Physics >Thermoelectric conversion via laser-induced voltage in highly textured polycrystalline Na_xCoO_2 ceramic
【24h】

Thermoelectric conversion via laser-induced voltage in highly textured polycrystalline Na_xCoO_2 ceramic

机译：高度纹理化的多晶Na_xCoO_2陶瓷中通过激光感应电压进行热电转换

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We have studied and analyzed the laser-induced voltage effect in highly c-axis-oriented polycrystalline Na_xCoO_2. The textured and layered stacking Na_xCoO_2(x～0.7) bulks were prepared by a solid-state reaction process. Under the irradiation on Na_(0.67)CoO_2 bulk surface with pulsed laser (A - 248 run), the induced voltage signals were observed on the inclined surface with rise time 30 ns-43 ns and peak voltage 200 mV-500 mV; the voltage peak values show a linear dependence of laser energy densities. The crystal grains orientation plays a critical role in voltage peak value whether in film or texture bulk. The transverse voltage signal brings the information of thermoelectric anisotropy. In Na_xCoO_2 band structure, the Fermi surface is different in the ab plane and along the c axis, leading to anisotropy of Seebeck coefficient. Additionally, the artificial structure of the inclined surface for highly textured bulk enables us to obtain a transverse voltage on inclined surface. These results demonstrated the layered textured bulk has potential applications in waste-heat conversion via transverse thermoelectric effect.
机译：我们已经研究并分析了在高度c轴取向的多晶Na_xCoO_2中激光诱导的电压效应。通过固相反应法制备了有组织的层状堆积Na_xCoO_2（x〜0.7）。在Na_（0.67）CoO_2块体表面用脉冲激光辐照（A-248nm），在倾斜面上观察到感应电压信号，上升时间为30 ns-43 ns，峰值电压为200 mV-500 mV；电压峰值显示出激光能量密度的线性依赖性。晶粒取向在电压峰值中起着至关重要的作用，无论是在薄膜中还是在纹理块中。横向电压信号带来热电各向异性的信息。在Na_xCoO_2能带结构中，费米表面在ab平面和沿c轴方向不同，从而导致塞贝克系数的各向异性。另外，用于高度纹理化体积的倾斜表面的人工结构使我们能够在倾斜表面上获得横向电压。这些结果表明，层状结构的块体在通过横向热电效应进行废热转化中具有潜在的应用。

著录项

  • 来源
    《Journal of Applied Physics》 |2011年第10期|p.103102.1-103102.4|共4页
  • 作者

    G. W. Yan; L Yu; Y. Wang; H. Zhang; P. X. Zhang; H.-U. Habermeier;

  • 作者单位

    Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;

    Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China,Max-Planck Institute for Solid State Research, Heisenbergstrasse 1, Stuttgart D-70569, Germany;

    Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;

    Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;

    Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China,Max-Planck Institute for Solid State Research, Heisenbergstrasse 1, Stuttgart D-70569, Germany;

    Max-Planck Institute for Solid State Research, Heisenbergstrasse 1, Stuttgart D-70569, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号