First-Principles Study on Strain-Induced Modulation of Electronic Properties in Indium Phosphide

Overview

Journal Nanomaterials (Basel)

Date 2024 Nov 8

PMID 39513836

Authors

Libin Yan

Zhongcun Chen

Yurong Bai

Wenbo Liu

Huan He

Chaohui He

Affiliations

Soon will be listed here.

Abstract

Indium phosphide (InP) is widely utilized in the fields of electronics and photovoltaics due to its high electron mobility and high photoelectric conversion efficiency. Strain engineering has been extensively employed in semiconductor devices to adjust physical properties and enhance material performance. In the present work, the band structure and electronic effective mass of InP under different strains are investigated by ab initio calculations. The results show that InP consistently exhibits a direct bandgap under different strains. Both uniaxial strain and biaxial tensile strain exhibit linear effects on the change in bandgap values. However, the bandgap of InP is significantly influenced by uniaxial compressive strain and biaxial tensile strain, respectively. The study of the InP bandgap under different hydrostatic pressures reveals that InP becomes metallic when the pressure is less than -7 GPa. Furthermore, strain also leads to changes in effective mass and the anisotropy of electron mobility. The studies of electronic properties under different strain types are of great significance for broadening the application of InP devices.

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