Thermal conductivity of granulated silicon doped with alkali metal atoms

Andijan Machine-Building Institute, Andijan, 170100, Uzbekistan

^* Corresponding author: zarbek1990@gmail.com

Published online: 10 March 2025

Abstract

This study presents a novel comparative method for determining the thermal conductivity coefficient of granular silicon doped with alkali metal atoms. The experimental setup utilizes a three-layer disk configuration, where the same heat flow is passed through two distinct material samples. Temperature measurements are taken separately between each heat-conducting layer, allowing for precise thermal conductivity comparisons. The method’s key advantage lies in its ability to minimize experimental errors by using a comparative approach. By passing identical heat flows through different samples simultaneously, the technique effectively isolates the thermal conductivity properties of the doped silicon granules. The experimental design employs a disk with a thickness significantly smaller than its diameter. This geometry allows researchers to neglect heat loss through the side surfaces, focusing the analysis on the axial heat flow through the layered structure. This simplification enhances the accuracy of the thermal conductivity measurements for the granular silicon samples containing alkali metal dopants. This innovative approach provides a reliable means to quantify the impact of alkali metal doping on the thermal properties of granular silicon. The findings from this study have potential applications in the development of advanced semiconductor materials and thermal management solutions in electronics.