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Evropeitsev E. A. Serov Yu. M. Nechaev D. V. Jmerik V. N. Shubina T. V. Toropov A. A. 《JETP Letters》2021,113(8):504-509
JETP Letters - The decay kinetics of low-temperature exciton photoluminescence in a heterostructure with multiple GaN/AlN monolayer quantum wells, which is prepared by molecular beam epitaxy, is... 相似文献
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E. S. Demidov A. N. Mikhaylov A. I. Belov M. V. Karzanova N. E. Demidova Yu. I. Chigirinskii A. N. Shushunov D. I. Tetelbaum O. N. Gorshkov E. A. Evropeitsev 《Physics of the Solid State》2011,53(12):2415-2420
It has been shown that the presence of silicon nanoparticles in a layer of porous silicon saturated with tungsten-tellurite
glass causes an increase in the photoluminescence quantum efficiency of erbium (1530 nm) by an order of magnitude in the case
of long-wavelength excitation and an enhancement of the ytterbium photoluminescence (980 nm) by almost 50 times and erbium
photoluminescence by 25 times in the case of short-wavelength pumping. This luminescence enhancement is explained by the formation
of additional channels of transfer of external excitation by silicon nanocrystallites in porous silicon to impurity ytterbium
and erbium ions in tungsten-tellurite glass. 相似文献
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T. N. Mikhailov E. A. Evropeitsev K. G. Belyaev A. A. Toropov A. V. Rodina A. A. Golovatenko S. V. Ivanov G. Pozina T. V. Shubina 《Physics of the Solid State》2018,60(8):1590-1594
Using time-resolved photoluminescence (PL) spectroscopy, we establish the presence of the Förster energy transfer mechanism between two arrays of epitaxial CdSe/ZnSe quantum dots (QDs) of different sizes. The mechanism operates through dipole–dipole interaction between ground excitonic states of the smaller QDs and excited states of the larger QDs. The dependence of energy transfer efficiency on the width of barrier separating the QD insets is shown to be in line with the Förster mechanism. The temperature dependence of the PL decay times and PL intensity suggests the involvement of dark excitons in the energy transfer process. 相似文献
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