title: ÐÐ¿ÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð° Ð³ÐµÐºÑÐ°Ð³Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð½Ð¸ÑÑÐ¸Ð´Ð° Ð±Ð¾ÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Optical properties of hexagonal boron nitride
Creators: name: ÐÐ»ÑÑÐ½Ð±Ð°ÐµÐ², ÐÐ¸Ð½Ð°Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: Ð³ÐµÐºÑÐ°Ð³Ð¾Ð½Ð°Ð»ÑÐ½ÑÐ¹ Ð½Ð¸ÑÑÐ¸Ð´ Ð±Ð¾ÑÐ°
ÑÐ¾ÑÐ¾Ð»ÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ¸Ñ
Ð¿Ð¾Ð³Ð»Ð¾ÑÐµÐ½Ð¸Ðµ
Ð¿Ð¾Ð»ÑÑÐ¸Ð·Ð°ÑÐ¸Ñ
Ð²Ð°ÐºÐ°Ð½ÑÐ¸Ð¸ Ð°Ð·Ð¾ÑÐ°
ÑÐ¾Ð½ÐºÐ¸Ðµ Ð¿Ð»ÐµÐ½ÐºÐ¸
hexagonal boron nitride
photoluminescence
absorption
polarization
nitrogen vacancies
thin films

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description: The given work is devoted to studying of the optical properties of thin films of
hexagonal boron nitride in the visible spectral range. The research set the following
goals:
1. Registration of photoluminescence spectra upon photoexcitation by lasers
with different wavelengths. 2. Registration of transmission and reflection spectra from
the studied thin films. 3. Obtaining the spectral dependence of the Stokes parameters
for linear and circular polarization. 4. Comparison of the obtained experimental results
with the available theoretical calculations.
An experimental study of thin films of hexagonal boron nitride placed on a substrate of polyethylene terephthalate (PET) was carried out by optical, including polarization, spectroscopy.
As a result, the presence of absorption bands at photon energies lower than the
energy gap of the ideal crystal and the presence of birefringence and conversion of light
polarization were established. Optical absorption is interpreted as optical transitions
involving deep levels of nitrogen vacancies and their clusters. From the nature of the
spectral dependence of the Stokes parameters, a conclusion is drawn about the possible
anisotropy of these transitions.
The results can be used for further studies related to the creation of heterostructures based on hBN.