Nanocrystals of Pb_1-xFe_xI₂ with x up to 0.05 embedded in transparent polymer matrix have been studied by optical absorption, photoluminescence and electron paramagneric resonance. The composite nanostructures containing the semimagnetic semiconductor nanocrystals of Pb_1-xFe_xI₂ have been prepared by cooling to the room temperature of boiling saturated aqueous solution. The absorption spectra of nanoparticles exhibit blue shift due to quantum confinement effect. For colloidal solution of nanocrystals and nanostructures incorporated in polymer matrix based on polyvinylalcohol exciton structures of absorption spectra was observed. In photoluminescence spectra of nanoparticles two main peaks were revealed, which are attributed to the band-edge transmission and defects states. The substitutional incorporation of iron ions at lead sites is reflected in EPR studies. Isolated as well as interacting Fe³⁺ ions are observed in EPR spectra of Pb_1-xFe_xI₂ nanocrystals.

Date Published: 17 December 2013
PDF: 6 pages
Proc. SPIE 9066, Eleventh International Conference on Correlation Optics, 906617 (17 December 2013); doi: 10.1117/12.2048676

Published in SPIE Proceedings Vol. 9066:
Eleventh International Conference on Correlation Optics
Oleg Vyacheslavovich Angelsky, Editor(s)