In2O3-Based Thermoelectric Materials: The State of the Art and the Role of Surface State in the Improvement of the Efficiency of Thermoelectric Conversion
Source abstract
Abstract
In this paper, the thermoelectric properties of In2O3-based materials in comparison with other thermoelectric materials are considered. It is shown that nanostructured In2O3 Sn-based oxides are promising for thermoelectric applications at moderate temperatures. Due to the nanostructure, specific surface properties of In2O3 and filtering effects, it is possible to significantly reduce the thermal conductivity and achieve an efficiency of thermoelectric conversion inaccessible to bulk materials. It is also shown that a specific surface state at the intergrain boundary, optimal for maximizing the filtering effect, can be achieved through (1) the engineering of grain boundary parameters, (2) controlling the composition of the surrounding atmosphere, and (3) selecting the appropriate operating temperature.
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Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · Thermal Radiation and Cooling Technologies · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
Department of Theoretical Physics, State University of Moldova, Chisinau 2009, Moldova
Funding
Ministry of Science, ICT and Future Planning (MSIP) of the Republic of Korea · State Program of Republic of Moldova · Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education · GIST Research Institute (GRI).
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