The Effect of Shallow Impurities on the Light Absorption by the Nanocrystals CdS

V. I. Boichuk; R. Ya. Leshko; D. S. Karpyn

doi:10.15407/ujpe63.12.1088

The Effect of Shallow Impurities on the Light Absorption by the Nanocrystals CdS

Authors

V. I. Boichuk Physics Department, Ivan Franko Drohobych State Pedagogical University
R. Ya. Leshko Physics Department, Ivan Franko Drohobych State Pedagogical University
D. S. Karpyn Physics Department, Ivan Franko Drohobych State Pedagogical University

DOI:

https://doi.org/10.15407/ujpe63.12.1088

Keywords:

acceptor and donor imputities, exciton, light absorption coefficient, nanocrystal

Abstract

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.

Author Biography

R. Ya. Leshko, Physics Department, Ivan Franko Drohobych State Pedagogical University

LESHKO Roman Yaroslavovich - Candidate of Sciences (Physics and Mathematics), Associate Professor of the Department of Physics, Drohobych State Pedagogical University named after Ivan Franko. Born on November 27, 1984 in Truskavets, Lviv region.

EDUCATION. Graduated from Truskavets Secondary School No. 1 (2001) with a gold medal, Drohobych State Pedagogical University named after Ivan Franko, specializing in PMSO. Physics and Fundamentals of Informatics "(2006) with honors, 2007 - Master's Degree in Drohobych State Pedagogical University named after Ivan Franko, specialty" PMO. Physics "(graduated with honors). Candidate's dissertation on the topic: "The theory of hole, exciton, and impurity states in spherical nanoheterosystems" defended in the specialized academic council D 76.051.01 at Chernivtsi National University named after Yuri Fedkovych (2010).

EMPLOYMENT. In 2010, he began his career at the Department of Theoretical Physics and Methodology of Teaching Physics at the Drohobych State Pedagogical University named after Ivan Franko in the positions of: Teacher (2010-2013), Senior Lecturer (2013), Associate Professor (since 2015). Awarded the Lviv Regional State Administration Award (2013).

SCIENCE. Scientific interests are connected with theoretical research of quasiparticle states and optical properties of ideal and defective nanosystems. This area of study is represented by more than 60 scientific works.

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Published

2018-12-09

How to Cite

Boichuk, V. I., Leshko, R. Y., & Karpyn, D. S. (2018). The Effect of Shallow Impurities on the Light Absorption by the Nanocrystals CdS. Ukrainian Journal of Physics, 63(12), 1088. https://doi.org/10.15407/ujpe63.12.1088

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Issue

Vol. 63 No. 12 (2018)

Section

Semiconductors and dielectrics

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