Optical Properties of ZnS:Mn²⁺ Yellow Nanophosphor Prepared by Spray Pyrolysis

Abstract:

Spray pyrolysis was used to prepare ZnS:Mn2+ yellow nanophosphor. As an increase in firing temperature for spray pyrolysis, more nanoparticles of a hexagonal phase were formed together with these of the cubic structure. The optimized emission intensity was observed when the nanophosphor was fired at 900 oC after using a spraying solution of 3.5 pH. The particle size ranged from 60 nm to 400 nm. The ZnS:Mn2+ nanophosphor showed a redshift of about 10 nm in the emission spectrum compared to the microphosphor synthesized by solid-state reaction. The temperature-dependence photoluminescence showed different spectroscopic behaviour and displayed a longer decay time than the microphosphor.

• Periodical: Solid State Phenomena (Volume 128)
• Pages: 179-184
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.128.179
• Online since: October 2007
• Authors: Sung Hoon Lee, Je Hong Park, Jong Su Kim, Tae Wan Kim, Hong Lee Park
• Keywords: Nanophosphor, Photoluminescence (PL), Spray Pyrolysis, ZnS:Mn2⁺

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