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Dynamics of single InGaN quantum dots
Authors:R A Taylor  J W Robinson  J H Rice  A Jarjour  J D Smith  R A Oliver  G A D Briggs  M J Kappers  C J Humphreys  Y Arakawa
Institution:a Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, UK;b Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK;c Department of Materials, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, UK;d Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
Abstract:Decay dynamics for single InGaN quantum dots are presented using time-resolved photoluminescence. The recombination is shown to be characterized by a single exponential decay, in contrast to the non-exponential recombination dynamics seen in the 2D wetting layer. The lifetimes of single dots in the temperature range 4–60 K decrease with increasing temperature. Different dots show similar lifetimes of 2 ns.
Keywords:Author Keywords: InGaN  Single quantum dots  Time-resolved luminescence
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