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Thermoelement Linear Dimensions Influence on Output Characteristics of Thermoelectric Generator
Authors
	Loboda V.V.
	Buslaev R.D.
Date of publication
	2020
DOI
	10.31114/2078-7707-2020-3-230-236
Abstract
	Solid state thermoelectric generators based on the Seebeck affect convert thermal energy into electricity. Microthermoelectric generators (µTEG) have generated great interest recently due to their reliable and stable power provision for low-power microelectronic devices, such as wireless sensor networks, smart homes, object monitoring systems and mobile devices. In recent decades, the fabrication of thin-film TEGs has been intensively developing using the electrochemical methods MEMS, MBE, CVD. The thin-film thermoelectric generator is compact, has a short thermal response time and a high specific electric power. The use of silicon as a base, due to its compatibility with CMOS and MEMS processes, is also an important advantage of µTEG. The article deals with the research results on the thermoelements linear dimensions influence on output characteristics of thermoelectric generators. The optimization calculations were carried out by means of ANSYS Workbench and genetic algorithm. It has been stated that the thermoelectric linear dimensions correction between does not change when changing thermal boundary conditions. The dependence of the output power of linear dimensions correlation has a flat top, and the general range of linear dimensions change can be found, where the output power shows the deviation of ±3 %. The optimization calculation result in the conclusions that such an approach to develop microthermoelectric generators with optimal characteristics can be applied. Unlike other similar research [19,20], this study suggests employing a physical layer of soldering between the thermal elements and the bonding pads and taking into account the electric and thermal contacts influence on the metal/semiconductor border as well as the bonding pad layer thickness. These peculiar characteristics of the model allow to predict optimal thermal elements dimensions and internal resistance values, thus, in its turn, facilitates to design thermoelectric generators with different output operation parameters and operation temperature ranges with the required external load resistance.
Keywords
	thermoelectric generator, MEMS, finite element method, simulation, optimization, output power.
Library reference
	Loboda V.V., Buslaev R.D. Thermoelement Linear Dimensions Influence on Output Characteristics of Thermoelectric Generator // Problems of Perspective Micro- and Nanoelectronic Systems Development - 2020. Issue 3. P. 230-236. doi:10.31114/2078-7707-2020-3-230-236
URL of paper
	http://www.mes-conference.ru/data/year2020/pdf/D092.pdf