Bottom-Up Synthesis of SnTe-Based Thermoelectric Composites
Source abstract
Abstract
High Resolution Image Download MS PowerPoint Slide There is a need for the development of lead-free thermoelectric materials for medium-/high-temperature applications. Here, we report a thiol-free tin telluride (SnTe) precursor that can be thermally decomposed to produce SnTe crystals with sizes ranging from tens to several hundreds of nanometers. We further engineer SnTe–Cu 2 SnTe 3 nanocomposites with a homogeneous phase distribution by decomposing the liquid SnTe precursor containing a dispersion of Cu 1.5 Te colloidal nanoparticles. The presence of Cu within the SnTe and the segregated semimetallic Cu 2 SnTe 3 phase effectively improves the electrical conductivity of SnTe while simultaneously reducing the lattice thermal conductivity without compromising the Seebeck coefficient. Overall, power factors up to 3.63 mW m –1 K –2 and thermoelectric figures of merit up to 1.04 are obtained at 823 K, which represent a 167% enhancement compared with pristine SnTe.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · Perfectionism, Procrastination, Anxiety Studies · Chalcogenide Semiconductor Thin Films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Catalonia Institute for Energy Research─IREC, Sant Adrià de Besòs, Barcelona 08930, Spain
Universitat de Barcelona, Martí i Franquès 1, Barcelona 08028, Spain
The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
Institute of Science and Technology Austria (ISTA), Am Campus 1, Klosterneuburg 3400, Austria
School of Materials Science and Engineering, Beihang University, Beijing 100191, China
Department of Materials Science and Engineering, Pennsylvania State University, University Park, State College, Pennsylvania 16802, United States
Institute of Advanced Study, Chengdu University, Chengdu 610106, China
Institute of Zhejiang University─Quzhou, 99 Zheda Rd, Quzhou 324000, Zhejiang, P. R. China
College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Rd, Hangzhou 310007, Zhejiang, P. R. China
ICREA, Pg. Lluís Companys 23, Barcelona 08010, Catalonia, Spain
Funding
Zhejiang University · Austrian Science Fund · Agència de Gestió d'Ajuts Universitaris i de Recerca · Department of Science and Technology of Sichuan Province · Institute of Science and Technology Austria · China Scholarship Council
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