Chemically synthesized Cu2Te incorporated Bi-Sb-Te p-type thermoelectric materials for low temperature energy harvesting. (May 2019)

• Record Type: Journal Article
• Authors: Song, Jae Min; Rahman, Jamil Ur; Cho, Jung Young; Lee, Soonil; Seo, Won Seon; Kim, Seyun; Kim, Sang-il; Lee, Kyu Hyoung; Roh, Dongkyu; Shin, Weon Ho
• Is Part Of: Scripta materialia. Number 165(2019)
• Page Start: 78
• Page End: 83
• Publication Date: 2019-05
• Subjects: Thermoelectric -- Cu2Te nanoparticle -- Bipolar conduction -- Lattice thermal conductivity reduction -- Carrier tuning; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2019.01.046
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: We report a facile and efficient way to enhance and modulate thermoelectric performance by incorporating chemically synthesized Cu2 Te nanoparticles on p-type Bi0.5 Sb1.5 Te3 matrix. By varying the amount of Cu2 Te nanoparticles, the temperature of maximum thermoelectric performance shifted systematically from room temperature to 425 K. The highest figure-of-merit value, 1.1, was achieved at 377 K by incorporating 0.1 wt% Cu2 Te nanoparticles in Bi0.5 Sb1.5 Te3 matrix, which is due to enhancement in power factor and reduction in lattice thermal conductivity. The results demonstrate that Cu2 Te incorporation could be an effective strategy for Bi-Te based thermoelectric power generation. Graphical abstract: Unlabelled Image