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Dot-in-a-dot: electronic and photonic confinement in all three dimensions |
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| Authors: | Woggon U Wannemacher R Artemyev MV Möller B LeThomas N Anikeyev V Schöps O |
| Institution: | (1) Fachbereich Physik, Universität Dortmund, Otto-Hahn Str. 4, 44221 Dortmund, Germany;(2) Fakultät für Physik und Geowissenschaften, Universität Leipzig, Linnéstr. 5, 04103 Leipzig, Germany;(3) Institute for Physico-Chemical Problems of Belarussian State University, Leningradskaya str., 14, 220080 Minsk, Belarus |
| Abstract: | We have studied the optical properties of three-dimensionally confined photon states in a spherical microcavity (the photonic dots) resonantly excited by photons emitted from semiconductor nanocrystals (the quantum dots). Glass and polymer microspheres with sizes of 2 <R<10 are characterized by spatially and temporally resolved micro-photoluminescence. The role of nanocrystal position and orientation is analyzed experimentally and theoretically. The emission spectra of single, bulk and hollow microspheres impregnated with CdSe quantum dots and quantum rods are investigated and the modification of the quantum dot radiative lifetime by the three-dimensional photon confinement is discussed. PACS 78.66.Hf; 61.46.+w; 42.60.Da |
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