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2020 | OriginalPaper | Chapter

Radiative Recombination of Bound Excitons in MoSe₂:I₂ Layered Crystals

Authors : N. Siminel, V. Nedelea, K. Sushkevich, A. Siminel, A. Micu, L. Kulyuk

Published in: 4th International Conference on Nanotechnologies and Biomedical Engineering

Publisher: Springer International Publishing

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Abstract

The steady-state and time-resolved photoluminescence (PL) of excitons bound on intercalated iodine molecules was studied for the first time in MoSe₂:I₂ layered single crystals. Along with narrow exciton spectral lines located near the energy of the MoSe₂ indirect bandgap in the region of 0.98–1.06 eV, an IR broadband radiation centered at 0.78 eV and caused by the recombination of photoexcited carriers through the intrinsic lattice defects were found. To describe the temperature dependences of the intensity of steady-state PL, as well as its temporal characteristics, a kinetic model was proposed that takes into account the radiative and non-radiative recombination channels present in this quasi-two-dimensional semiconductor.

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Title: Radiative Recombination of Bound Excitons in MoSe2:I2 Layered Crystals
Authors: N. Siminel
V. Nedelea
K. Sushkevich
A. Siminel
A. Micu
L. Kulyuk
Publisher: Springer International Publishing
Book: 4th International Conference on Nanotechnologies and Biomedical Engineering
Print ISBN: 978-3-030-31865-9

Electronic ISBN: 978-3-030-31866-6

Copyright Year: 2020
DOI: https://doi.org/10.1007/978-3-030-31866-6_55