A preliminary work on synthesis of Europium-doped Zinc sulphide nanophosphors is reported. The result showsudthat pure and well passivated ZnS:Eu3+ nano-particles were synthesized. The average particle sizes show thatudthe nano-particles are in the strong quantum confinement regime which is evident from the stoke-shift in theudabsorption spectrum and the broadening of the XRD diffraction peaks. Particles sizes determined from theudeffective mass approximation and hyperbolic band model show higher particle size distribution, as a result ofuda consequential failure of these models at very small size regime. The intensity of red light emitted from theudsynthesized ZnS:Eu nanophospors is size and site dependent. There is clear evidence that energy transferudfrom ZnS host to Eu3+ occurred but this emission has weak intensity.
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