Growth of Semi-Conductor Single Crystals for Energy Conversion

Pr. Sadik DOST

Mechanical Engineering Department, Crystal Growth Laboratory, University of Victori, Canada.

Single crystal and polycrystalline semiconducting materials of silicon (Si), germanium (Ge), cadmium zinc telluride (CdZnTe) and gallium antimonide (GaSb) have been used for energy conversion in the visible and infrared spectrum. The talk will present an overview of single crystal growth of GaSb, CdZnTe and Silicon-Germanium (SiGe) from metallic solutions and melt. The growth techniques used at the University of Victoria are the solution growth techniques of the Travelling Heather Method (THM) for GaSb and CdTe, Liquid Phase Diffusion (LPD) for SiGe, and the melt growth method of Vertical Gradient Freezing (VGF) for CdZnTe. The progress and the remaining issues of these growth processes will be discussed. Recent Experimental and numerical simulation results will be presented.


Pr. Sadik DOST : Professor and Director of the Crystal Growth Laboratory at the University of Victoria since 1989. He graduated from Karadeniz Technical University of Turkey in 1969 and obtained his Ph.D. in Istanbul Technical University in 1974. He has then worked as a faculty member in Ege University of Turkey until 1980 and then in the University of Calgary until 1989.

He is the founding director of a university research centre: CAMTEC (Centre for advanced materials and related technology) at UVic, and served as its Director from 1992 to 1997. He has also served as Chair of the Department of Mechanical Engineering at UVic from 1997 to 2003. Dr. Dost has been a Canada Research Chair in Crystal Growth from 2003 to 2017.

His research combines experimental and theoretical study of growth of bulk single crystals from melt and solution using a variety of crystal growth processes such as Bridgman (B), Vertical Gradient Freezing (VGF), Liquid Phase Electroepitaxy (LPEE), Liquid Phase Epitaxy (LPE), Travelling Heater Method (THM), Liquid Phase Diffusion (LPD), Float-Zone (FZ), and Top-Seeded Solution Growth (TSSG). He has made significant contributions to these techniques.