Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Tuning the Luminescence Response of an Air-Hole Photonic Crystal Slab Using Etching Depth Variation. / Peretokin, Artem V; Yurasov, Dmitry V; Stepikhova, Margarita V и др.
в: Nanomaterials, Том 13, № 10, 1678, 19.05.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Tuning the Luminescence Response of an Air-Hole Photonic Crystal Slab Using Etching Depth Variation
AU - Peretokin, Artem V
AU - Yurasov, Dmitry V
AU - Stepikhova, Margarita V
AU - Shaleev, Mikhail V
AU - Yablonskiy, Artem N
AU - Shengurov, Dmitry V
AU - Dyakov, Sergey A
AU - Rodyakina, Ekaterina E
AU - Smagina, Zhanna V
AU - Novikov, Alexey V
N1 - Funding: The work was funded by the Russian Science Foundation (grant #19-72-10011).
PY - 2023/5/19
Y1 - 2023/5/19
N2 - Detailed studies of the luminescent properties of the Si-based 2D photonic crystal (PhC) slabs with air holes of various depths are reported. Ge self-assembled quantum dots served as an internal light source. It was obtained that changing the air hole depth is a powerful tool which allows tuning of the optical properties of the PhC. It was shown that increasing the depth of the holes in the PhC has complex influences on its overall photoluminescence (PL) response due to the simultaneous influences of counteracting factors. As a result, the maximal increase in the PL signal of more than two orders of magnitude was obtained for some intermediate, but not full, depth of the PhC's air holes. It was demonstrated that it is possible to engineer the PhC band structure in such a way as to construct specific states, namely bound states in continuum (BIC), with specially designed dispersion curves being relatively flat. In this case, such states manifest themselves as sharp peaks in the PL spectra, and have high Q-factors which are larger than those of radiative modes and other BIC modes without such a flat dispersion characteristic.
AB - Detailed studies of the luminescent properties of the Si-based 2D photonic crystal (PhC) slabs with air holes of various depths are reported. Ge self-assembled quantum dots served as an internal light source. It was obtained that changing the air hole depth is a powerful tool which allows tuning of the optical properties of the PhC. It was shown that increasing the depth of the holes in the PhC has complex influences on its overall photoluminescence (PL) response due to the simultaneous influences of counteracting factors. As a result, the maximal increase in the PL signal of more than two orders of magnitude was obtained for some intermediate, but not full, depth of the PhC's air holes. It was demonstrated that it is possible to engineer the PhC band structure in such a way as to construct specific states, namely bound states in continuum (BIC), with specially designed dispersion curves being relatively flat. In this case, such states manifest themselves as sharp peaks in the PL spectra, and have high Q-factors which are larger than those of radiative modes and other BIC modes without such a flat dispersion characteristic.
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85160404339&origin=inward&txGid=86d99be3964270363999b5aebcf3a90f
U2 - 10.3390/nano13101678
DO - 10.3390/nano13101678
M3 - Article
C2 - 37242094
VL - 13
JO - Nanomaterials
JF - Nanomaterials
SN - 2079-4991
IS - 10
M1 - 1678
ER -
ID: 50651125