Chemical vapor deposition growth of Ga2O3 nanowire arrays and their application in solar blind UV detector

The proposed project aims at the formation of ordered arrays of beta-type gallium oxide (?-Ga2O3) nanowires using the technique of chemical vapor deposition (CVD) and their application as solar-blind ultraviolet (UV) photodetectors. Currently at Bo Fu’s home institution, Shandong University, only disordered ?-Ga2O3 nanowires can be grown, which is a far cry from meeting the demand of practical applications. In order to grow ordered arrays of ?-Ga2O3 nanowires, Bo Fu will employ the pulsed laser-induced dewetting method in Dr. Yujun Shi’s Lab at University of Calgary to produce arrays of Au nanoparticles (NPs) as catalysts for the CVD growth of ?-Ga2O3 nanowires. Since the growth of ?-Ga2O3 nanowires using Au NP catalyst follows a vapor-liquid-solid mechanism, the position of the nanowire growth is dictated by the position of Au NP catalyst. Hence, by using Au NP arrays as catalyst, organized arrays of ?-Ga2O3 nanowires can be produced. This provides the necessary control on the ordered nanowire growth. After the successful formation of ?-Ga2O3 nanowire arrays on ?-Ga2O3 substrate, the solar-blind UV detector based on the nanowire arrays will be designed and fabricated.

Faculty Supervisor:

Yujun Shi

Student:

Partner:

Shandong University

Discipline:

Physics

Sector:

Nanotechnology; Clean Technology; Sustainability & the Environment

University:

University of Calgary

Program: