Luminescence properties of CdSe nanocrystallites in cadmium alkanoate glasses

16th International Youth Scientific School 'Actual Problems of Magnetic Resonance and its Applications'

Magarian, K.A.^1 ; Fedyanin, V.V.^1,2 ; Karimullin, K.R.^3,4 ; Vasilieva, I.A.^1 ; Klimusheva, G.V.^5

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

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

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

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

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

关键词: Absorption and photoluminescence;    Alkanoates;    Band edge luminescence;    CdSE nanoparticles;    Energy diagram;    Luminescence properties;    Quantum confinement effects;    Thermotropic ionic liquid crystals;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/478/1/012007/pdf
DOI  :  10.1088/1742-6596/478/1/012007

来源: IOP

【 摘 要 】

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.