Hwa Chong Institution (High School)
Project Work 2017

WEB-REPORT
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Level Upper Secondary
Category Experimental Research
Group 1-32
Project Title Effect of doping different metals on photoluminescence of ZnS nanoparticles
Abstract ZnS nanoparticles co-doped with Cu and other metal dopants (Ag, Y, Mn, Al) were prepared by green chemistry using glucose as a capping agent. The properties of the nanoparticles were investigated using x-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy and photoluminescence spectroscopy. The XRD pattern exhibited a zinc-blend crystal structure at room temperature. The particle sizes of the nanoparticles were determined to be between 9.30 nm - 31.5 nm. The UV-Vis absorption spectrum showed that the optimum excitation wavelength was at 330 nm and the optical bandgaps were determined to be significantly different, ranging from 5 eV to 5.5 eV. The photoluminescence spectrum of ZnS:Cu nanoparticles show an orange visible spectrum.
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Team Members
(Name & Class)

Team Leader :
SIN WEI CHUEN 4S2

Group Members

XU ZIQI 4S2
KIM MIN SEO (BUGIL ACADEMY)
YANG SI SEUNG (BUGIL ACADEMY)