Results 11 to 20 of about 24,150 (266)
Scientific Reports, 2022 The first order and second order corrected photoluminescence quantum yields are computed and compared to experiment for naphthalene in this manuscript discussing negative results.
Anjay Manian, Salvy P. Russo
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Direct observation of exciton–exciton interactions [PDF]
Nature Communications, 2018 AbstractNatural light harvesting as well as optoelectronic and photovoltaic devices depend on efficient transport of energy following photoexcitation. Using common spectroscopic methods, however, it is challenging to discriminate one-exciton dynamics from multi-exciton interactions that arise when more than one excitation is present in the system. Here
Jakub Dostál +5 more
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Quintet formation, exchange fluctuations, and the role of stochastic resonance in singlet fission
Communications Physics, 2023 Quintet formation is a part of a photochemical energy conversion process, which could be exploited to help achieve higher efficiency values for photovoltaics.
Miles I. Collins +4 more
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NV-plasmonics: modifying optical emission of an NV− center via plasmonic metal nanoparticles
Nanophotonics, 2022 The nitrogen-vacancy (NV) center in diamond is very sensitive to magnetic and electric fields, strain, and temperature. In addition, it is possible to optically interrogate individual defects, making it an ideal quantum-limited sensor with nanoscale ...
Hapuarachchi Harini +2 more
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Exciton-exciton and exciton–charge carrier interaction and exciton collisional broadening in GaAs/AlGaAs quantum wells [PDF]
Physical Review B, 2021 Wave functions of heavy-hole excitons in GaAs/Al$_{0.3}$Ga$_{0.7}$As square quantum wells (QWs) of various widths are calculated by the direct numerical solution of a three-dimensional Schrödinger equation using a finite-difference scheme. These wave functions are then used to determine the exciton-exciton, exciton-electron and exciton-hole fermion ...
B. F. Gribakin +3 more
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Exciton-exciton interaction and cascade relaxation of excitons in colloidal CdSe nanoplatelets
Journal of Luminescence, 2021 We experimentally investigated for the first time the lowest four band structure of Cd Se nanoplatelets at the r point of Brillouin zone [heavy-hole (hh), light-hole (lh) and two spin-orbital bands] and its modification due to the changing of the CdS shell thickness.
Alexander M. Smirnov +5 more
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Exciton-exciton annihilation in hBN [PDF]
Applied Physics Letters, 2019 Known as a prominent recombination path at high excitation densities, exciton-exciton annihilation (EEA) is evidenced in bulk hexagonal boron nitride by cathodoluminescence at low temperature. Thanks to a careful tuning of the exciton density by varying either the current or the focus of the incident electron beam, we could estimate an EEA rate of 2 ...
A. Plaud +7 more
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Exciton transport in amorphous polymers and the role of morphology and thermalisation
New Journal of Physics, 2021 Understanding the transport mechanism of electronic excitations in conjugated polymers is key to advancing organic optoelectronic applications, such as solar cells, organic light-emitting diodes and flexible electronics. While crystalline polymers can be
Francesco Campaioli, Jared H Cole
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Nanomaterials, 2023 The current work used the effective mass approximation conjoined with the finite element method to study the exciton states in a conical GaAs quantum dot.
Sargis P. Gavalajyan +6 more
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Boosting quantum yields in two-dimensional semiconductors via proximal metal plates
Nature Communications, 2021 The short exciton lifetime and strong exciton-exciton interaction in transition metal dichalcogenides limit the efficiency of exciton emission. Here, the authors show that exciton-exciton interaction in monolayer WS2 can be screened using proximal metal ...
Yongjun Lee +12 more
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