Abstract

An AgGaTe2 layer was prepared using an Ag2Te buffer layer. Ag2Te layers were deposited by the radio-frequency sputtering method. We investigate the variations in the Ag2Te buffer layer surface morphology and composition that take place during annealing. Ag2Te films were annealed in a tube furnace. The composition and surface morphology of the Ag2Te layer were found to vary depending on the thermal annealing temperature and duration. It was confirmed that a dewetting process in the Ag2Te layer occurred with annealing between 200°C and 500°C, and O2 and Mo reacted at 600°C and then became MoO3 compounds. Mo and Te were completely desorbed from the surface at 700°C. This confirmed that the surface morphology of the Ag2Te layer was controlled by the annealing temperature and duration.

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