Control in size, crystallinity, and optical properties of ZnO nanoparticles (NPs) synthesized via coprecipitate method were investigated. A systematic change in particle size, crystallinity, and optical properties was observed by increasing synthesis temperature from 65°C to 75°C. A detailed study also suggested that smaller nucleation time is better to control the size distribution but the crystallinity will be compromised accordingly. Postannealing of ZnO NPs at 400°C also improves the crystal quality. Ultraviolet (UV) sensors were successfully synthesized and the results suggested that as‐synthesized ZnO NPs can be used as active material for sensor applications.
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Manzoor et al. (2015) studied this question.
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