Effect of optical excitation conditions on the spectral and temporal characteristics of the radiation from two-dimensional photonic crystals with Ge(Si) nanoislands
Yablonskiy A.N.1, Yurasov D.V.1, Zakharov V.E.1, Peretokin A.V.1, Stepikhova M.V.1, Shaleev M.V.1, Shengurov D.V.1, Rodyakina E.E.2,3, Smagina Zh.V.2, Dyakov S.A.4, Novikov A.V.1,5
1Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, Russia
2Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
3Novosibirsk State University, Novosibirsk, Russia
4Skolkovo Institute of Science and Technology, Moscow, Russia
5Lobachevsky State University, Nizhny Novgorod, Russia
Email: yablonsk@ipmras.ru

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The effect of optical excitation conditions on the spectral and temporal characteristics of the radiation from two-dimensional photonic crystals based on the structures with self-assembled Ge(Si) nanoislands has been studied. It was shown that one of the main factors effecting the spectral position and shape of photoluminescence lines, as well as the photoluminescence kinetics of photonic crystals with Ge(Si) nanoislands, along with the mode structure of the photonic crystal, are the local heating of the samples and the concentration of nonequilibrium charge carriers created by the absorption of the pumping radiation. Keywords: self-assembled Ge(Si) nanoislands, two-dimensional photonic crystals, micro-PL spectroscopy, time-resolved PL studies. DOI: 10.61011/SC.2023.04.56421.08k
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