Abstract:GaAs hexagonal air-hole arrays fabricated by selective-area metal-organic vapour phase epitaxy (SA-MOVPE) on patterned GaAs(111)B substrates are promising for applications to hexagonal air-hole-type two-dimensional photonic crystal (2D-PhC) slabs, because the grown structures exhibit smooth flat surfaces surrounded by crystal facets. In this paper, we describe SA-MOVPE carried out under various gas-flow sequences in order to reduce the growth temperature, and to obtain uniform air-hole arrays without lateral o… Show more
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