Abstract
The authors reported the synthesis of large but thin transparent regularly shaped single-crystalline zinc oxide (ZnO) (0001) hexagonal nanodisks (or nanohexagons) (the most probable area scale of 95 μm2 and 40–70 nm in thickness) by an indium assisted vapor-phase transport (VPT) growth route at ambient pressure. These large-area ZnO nanohexagons exhibit excellent luminescent properties with a strong ultraviolet emission band centered at about 384 nm and a very weak green band shoulder emission, leading to the further creation of a promising low-defect-concentration nanohexagons-based nanooptoelectronics. Finally, a two-dimensional VPT growth mechanism was proposed to understand the formation of high-quality wurtzite-type ZnO nanohexagons.
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