期刊文献+

SiO_2微球模板制备多孔硅与其热电性能研究

Preparation and Thermoelectric Property Study of Porous Silicon Covered SiO_2 Nanospheres Template
下载PDF
导出
摘要 利用SiO_2微球模板法腐蚀Si片,发现不仅提高了腐蚀速率,而且孔洞更加均匀,孔隙率和有序性有所提高.对所制备的多孔硅进行性能测试结果表明,随腐蚀时间增加热导率降低.与相同时间无模板直接化学腐蚀多孔硅相比,SiO_2微球模板法得到的多孔硅有更低的热导率.将多孔硅腐蚀时间75min与腐蚀时间90min进行比较,样品的激活能由100.49meV增加到174.19meV,电阻率略有上升. The silicon that covered SiO2 nanospheres template was etched through the electrochemical corrosion method.The obtained samples with relatively homogeneous and ordered pores,and the corrosion rate is faster and porosity is higher than that without covered SiO2 template.The property of thermal conductivity was measured and analysised.The thermal conductivity is obviously decreased with the increasing of etching time.The thermal conductivity of the obtained samples is lower than that without covered SiO2 template.A comparison of the two samples of etching 75 min and 90 min by using the template indicates that the thermal activation energy increases from 100.49 meV to 174.19 meV,which makes the resistivity of the sample increase slightly.
出处 《河北师范大学学报(自然科学版)》 CAS 2016年第3期210-214,共5页 Journal of Hebei Normal University:Natural Science
基金 国家自然科学基金(10804026 51101049) 河北省自然科学基金(A2013205101 A2014205051) 河北省人才工程培养项目(A201400119)
关键词 热电材料 多孔硅 SiO2微球模板 热电性能 热导率 thermoelectric material porous silicon SiO2nanospheres template thermoelectric property thermal conductivity
  • 相关文献

参考文献1

二级参考文献22

  • 1Ni P G, Cheng B Y, Dong P and Zhang D Z 2001 Chin.Phys. Lett. 18 1610.
  • 2Ni P G, Cheng B Y and Zhang D Z 2002 Chin. Phys. Lett.19 511.
  • 3Xu L, Li M H, Zhang Y, Ma Y, Xu J, Huang X F and Chen K J 2002 Chin. Phys. Lett. 19 1377.
  • 4Chen Z, Zhang P, Zhang J H, Wang Z L, Zhang W Y and Min N B 2003 Chin. Phys. Lett. 20 1369.
  • 5Pusey P, Megen W, Bartlett P, Ackerson B, Rarity J and Underwood S 1989 Phys. Rev. Lett. 63 2753.
  • 6Salvarezza R, Vazquez L, Miguez H, Mayoral R, Lopez C and Meserguer F 1996 Phys. Rev. Lett.77 4572.
  • 7Denkov N, Velv O, Kralchevsky P, Ivanov I, Yoshimura H and Nagayama K 1992 Langmuir 8 3183.
  • 8Woodcoock L 1997 Nature 385 141.
  • 9Bruce A, Wilding N and Ackland G 1997 Phys. Rev. Lett.79 3002.
  • 10Dimitrov A S and Nagayama K 1996 Langmuir 12 1303.

共引文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部