Carriers concentration tailoring and phonon scattering from n-type zinc oxide (ZnO) nanoinclusion in p- and n-type bismuth telluride (Bi₂Te₃): Leading to ultra low thermal conductivity and excellent thermoelectric properties

详细信息    查看全文

• 作者：Qinghui Jiang^a ; ^{qhjiang@hust.edu.cn} ; Junyou Yang^a ; Jiwu Xin^a ; Zhiwei Zhou^a ; Dan Zhang^a ; Haixue Yan^b
• 关键词：Spark plasma sinterng ; Thermoelectrics ; Nanocomposites
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：694
• 期：Complete
• 页码：864-868
• 全文大小：1332 K
• 卷排序：694

文摘

Bi2Te3 (p- and n- type) nanocomposites with 5 vol% nanosized ZnO are fabricated via ball milling and spark plasma sintering. Ultra low lattice thermal conductivity (0.22–0.3 W/mK2) is obtained in both materials. An enhancement (30%) of ZT values (∼1.3) can be achieved in composite material compared with p-type Bi0.5Sb1.5Te3 ingot.