QUANTUM CONFINEMENT EFFECTS IN CHEMICALLY GROWN, STABLE ZNSE NANOCLUSTERS

Stable ZnSe quantum dots have been prepared by a wet chemical route. S odium Hexameta Phosphate, an inorganic polymer, is used to encapsulate the ZnSe quantum dots and to enhance the stability of quantum dots. X -ray Photoelectron Spectroscopic analysis confirms the high purity of ZnSe clusters. The optical absorption spectra exhibit a blue shift of about 0.6 eV, suggesting the existence of quantum size effects. Room t emperature photoluminescence measurements show a strong feature which originates from the radiative recombination of the quantum confined el ectron-hole pairs. (C) 1998 Acta Metallurgica Inc.