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PL spectra of the ZnS:Mn nanoparticles as a function of the irradiation time, with the corresponding quantum efficiency. The nanocrystals were UV irradiated with oxygen bubbling, either at 25 or . The inset shows the corresponding quantum efficiency.
X-ray photoemission spectra corresponding to (a) , (b) , and (c) for the ZnS:Mn nanocrystals at various irradiation times.
Quantum efficiency, grain size, local strain, radiative recombination rate, and nonradiative recombination rate of the ZnS:Mn nanoparticles at different UV irradiation times.
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