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Ag~+-doped ZnS nanocrystals surface-capped with thiourea(expressed as ZnS∶Ag/thiourea) were synthesized through sol-gel method with thiourea as a surface modifier and characterized by X-ray diffraction(XRD), transmission electron microscope(TEM), X-ray fluorescence spectrum(XRF), infrared spectrum(IR), UV-Vis absorption spectrum(UV-Vis), and photoluminescence spectrum(PL). The results show that Ag~+ ions are doped in ZnS nanocrystals, and the sulfur atoms in thiourea molecules coordinate with metal ions on the surface of the nanocrystals. The spherical ZnS∶Ag/thiourea nanocrystals with an average diameter of 5 nm have good fluorescent characteristics, and therefore have great potential for use in molecular assembly and novel luminescence materials.
Ag ~ + -doped ZnS nanocrystals surface-capped with thiourea (expressed as ZnS: Ag / thiourea) were synthesized through sol-gel method with thiourea as a surface modifier and characterized by X-ray diffraction (XRD) ), X-ray fluorescence spectrum (XRF), infrared spectrum (IR), UV-Vis absorption spectrum (UV- Vis), and photoluminescence spectrum (PL). The results show that Ag ~ + ions are doped in ZnS nanocrystals, and the sulfur atoms in thiourea molecules coordinate with metal ions on the surface of the nanocrystals. The spherical ZnS: Ag / thiourea nanocrystals with an average diameter of 5 nm have good fluorescent characteristics, and therefore have great potential for use in molecular assemblies and novel luminescence materials.