Silver-Based Intermetallic Heterostructures in Sb2Te3 Thick Films with Enhanced Thermoelectric Power Factors

详细信息    查看全文

• 作者：Yichi Zhang ; Matthew L. Snedaker ; Christina S. Birkel ; Syed Mubeen ; Xiulei Ji ; Yifeng Shi ; Deyu Liu ; Xiaonao Liu ; Martin Moskovits ; Galen D. Stucky
• 刊名：Nano Letters
• 出版年：2012
• 出版时间：February 8, 2012
• 年：2012
• 卷：12
• 期：2
• 页码：1075-1080
• 全文大小：479K
• 年卷期：v.12,no.2(February 8, 2012)
• ISSN：1530-6992

文摘

In this work, Ag_xTe_y-Sb₂Te₃ heterostructured films are prepared by ligand exchange using hydrazine soluble metal chalcogenide. Because of the created interfacial barrier, cold carriers are more strongly scattered than hot ones and thereby an over 50% enhanced thermoelectric power factor (2 渭W/(cm路K²)) is obtained at 150 掳C. This shows the possibility of engineering multiphases to further improve thermoelectric performance beyond phonon scattering through a low-temperature solution processed route.

Keywords:

Thermoelectric; hot carrier filtering effect; antimony telluride; solution processed; heterostructure; ligand exchange