Journal
EPL
Volume 84, Issue 6, Pages -Publisher
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
DOI: 10.1209/0295-5075/84/67017
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The photoluminescence emission of SiGe quantum dot arrays prepared by templated self-assembly, combining extreme-ultraviolet interference lithography and molecular beam epitaxy, were studied. The PL spectra obtained from areas with ordered dots show a pronounced SiGe-quantum-dot-related signal. The corresponding no-phonon and assisted transversal optical phonon recombinations are well resolved due to the narrow-size distribution of the fabricated quantum dot arrays. Additionally, the dependence of the photoluminescence emission on dot size and Ge concentration is discussed as well as effects of laser power excitation. Copyright (C) EPLA, 2008
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