Work

Thermal conductivity of silicon nanowires embedded on thermoelectric platforms

Year: 2016

Type: article

Abstract: In this study, we propose a simple method for obtaining the thermal conductivity of silicon nanowires (SiNWs) embedded on a thermoelectric platform. The approximation of the heat flux in SiNWs with temperature differences enables the determination of thermal conductivity. Using this method, the thermal conductivities of our n- and p- type SiNWs are found to be 18.06 ± 0.12 and 20.29 ± 0.77 W m −1 · K −1 , respectively. The atomic weight of arsenic ions in the n- type SiNWs is responsible for a lower thermal conductivity than that of boron ions in the p- type SiNWs. Our results demonstrate that this simple method is capable of measuring the thermal conductivity of thermoelectric nanomaterials embedded on thermoelectric devices.

Source: Measurement Science and Technology

DOI: 10.1088/0957-0233/27/10/105007

Authors: JinYong Choi, Kyoungah Cho, Dae Sung Yoon, Sangsig Kim

Institution: Korea University

Language: English

Topic: Thermal properties of materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: National Research Foundation, Ministry of Science, ICT and Future Planning, National Research Foundation of Korea