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Luminescence properties of CdSe nanocrystallites in cadmium alkanoate glasses

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, , Citation K A Magarian et al 2013 J. Phys.: Conf. Ser. 478 012007 DOI 10.1088/1742-6596/478/1/012007

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1 Moscow State Pedagogical University, 29 Malaya Pirogovskaya Str., Moscow, 119992, Russia

2 P. N. Lebedev Physics Institute of RAS, 53 Leninskii prosp., Moscow, 119991, Russia

3 Institute for Spectroscopy of RAS, 5 Fizicheskaya Str., Troitsk, Moscow, 142190, Russia

4 E.K. Zavoyski Kazan Physical-Technical Institute of RAS, 10/7 Sibirski trakt Str., Kazan, 420029, Russia

5 Institute of Physics, NAS of Ukraine, 46 Prospect Nauki, Kiev, 03028, Ukraine

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1742-6596/478/1/012007

Abstract

Quantum confinement effect and its influence on absorption and photoluminescence spectra of CdSe nanoparticles chemically synthesized in thermotropic ionic liquid crystal of cadmium octanoate are studied. It was found out that the spectral resolution grows with decrease of temperature, so it becomes possible to distinguish the band-edge luminescence from the bands associated with the presence of surface defects. Obtained spectra were analyzed theoretically and the energy diagrams for samples with 1.8 nm and 2.6 nm nanoparticles were calculated.

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10.1088/1742-6596/478/1/012007