Abstract
Reduction and limitation of free spaces between the gallium phosphide nanocones was studied. A set of nanocone samples was grown by metal organic vapour phase epitaxy (MOVPE) in the temperature range between 610 and 690°C. Our results showed that by an appropriate combination of a high density of gold seeds and an optimized growth temperature it was possible to obtain a nanostructured surface with very limited free spaces between the nanocones. A combination of lateral and vertical growth rates regulated by the selection of growth temperature played a very important role in the nanocone hexagonal base enlargement, which helped to minimize spaces between the cones. The limitation of free space between the nanocones increased a probability of edge creation that is very helpful for the successful growth of 2D materials.
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