8 June 2018 Optical spectroscopy of excitons with spatially separated electrons and holes in nanosystems containing dielectric quantum dots
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Abstract
It is shown that in the potential energy of an exciton of spatially separated electrons and holes [hole moves in the amount of quantum dots (QDs), the electron is localized on a spherical surface section (QD—dielectric matrix)], taking into account centrifugal, energy gives rise band of the quasistationary surface exciton states that with the increase of the radius of QD becomes stationary state. The mechanisms of formation of the spectra of interband and intraband absorption (emission) of light in nanosystems containing aluminum oxide QDs, placed in the matrix of vacuum oil, are presented. It is shown that the electron transitions in the area of the surface exciton states cause significant absorption in the visible and near-infrared wavelengths and cause the experimentally observed significant blurring of the absorption edge.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Sergey I. Pokutnyi, Sergey I. Pokutnyi, } "Optical spectroscopy of excitons with spatially separated electrons and holes in nanosystems containing dielectric quantum dots," Journal of Nanophotonics 12(2), 026013 (8 June 2018). https://doi.org/10.1117/1.JNP.12.026013 . Submission: Received: 19 March 2018; Accepted: 22 May 2018
Received: 19 March 2018; Accepted: 22 May 2018; Published: 8 June 2018
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