Metal-induced layer exchange of group IV materials

Author:

Toko KaoruORCID,Suemasu TakashiORCID

Abstract

Abstract Layer exchange (LE) is an interesting phenomenon in which metal and semiconductor layers exchange during heat treatment. A great deal of effort has been put into research on the mechanism and applications of LE, which has allowed various group IV materials (Si, SiGe, Ge, GeSn and C) to form on arbitrary substrates using appropriate metal catalysts. Depending on the LE material combination and growth conditions, the resulting semiconductor layer exhibits various features: low-temperature crystallization (80 °C–500 °C), grain size control (nm to mm orders), crystal orientation control to (100) or (111) and high impurity doping (>1020 cm−3). These features are useful for improving the performance, productivity and versatility of various devices, such as solar cells, transistors, thermoelectric generators and rechargeable batteries. We briefly review the findings and achievements from over 20 years of LE studies, including recent progress on device applications.

Funder

Precursory Research for Embryonic Science and Technology

Japan Society for the Promotion of Science

Publisher

IOP Publishing

Subject

Surfaces, Coatings and Films,Acoustics and Ultrasonics,Condensed Matter Physics,Electronic, Optical and Magnetic Materials

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