Growth of in-doped ZnO hollow spheres composed of nanosheets networks and nanocones: structural and optical properties.

This work reports the facile growth and characterizations of In-doped ZnO hollow spheres composed of nanosheets networks and nanocones. The In-doped ZnO hollow spheres composed of nanosheets networks and nanocones were grown on Si (100) substrate by simple and non-catalytic thermal evaporation process using metallic zinc and indium powders in the presence of oxygen. The prepared materials were examined in terms of their morphological, compositional, structural and optical properties. The detailed morphological studies revealed that the synthesized products are hollow spheres composed of nanosheet networks and nanocones and grown in high-density. The observed structural properties exhibited well-crystallinity and wurtzite hexagonal phase for the grown materials. The room-temperature photoluminescence (PL) spectrum showed a broad band in the visible region with a suppressed UV emission and hence due the enhancement in the green emission, the prepared materials exhibits a great interest in the area of ZnO phosphors, such as field emissive display technology, etc.