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Вплив мілких домішок на спектр поглинання світла нанокристалами CdS

Вплив мілких домішок на спектр поглинання світла нанокристалами CdS

The energy of quantum transitions of exciton-impurity states in a heterosystem with nanocrystals is calculated. The absorption spectra associated with the indicated transitions are analyzed. It is qualitatively shown that broad luminescence bands in the red region are related to the impurity accepto...

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Bibliographic Details
Main Authors: Boichuk, V. I., Leshko, R. Ya., Karpyn, D. S.
Format: Article
Language:English
Published: Publishing house "Academperiodika" 2018
Subjects:
acceptor and donor imputities
exciton
light absorption coefficient
nanocrystal
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Online Access:https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018099
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Summary:The energy of quantum transitions of exciton-impurity states in a heterosystem with nanocrystals is calculated. The absorption spectra associated with the indicated transitions are analyzed. It is qualitatively shown that broad luminescence bands in the red region are related to the impurity acceptor states, and the high narrow ones in the violet region to pure excitonic states and excitonic states interacting with the ion of a donor. The satisfactory quantitative agreement of our calculations with experimental data for high energy luminescence bands is obtained.

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