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Evolution of Luminescence Properties of CdTe Quantum Dots in Liquid/Solid Environment

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We studied the luminescence behavior of different sized CdTe quantum dots (QDs) dispersed in liquid solution, close-packed films and layer-by-layer assembled films respectively. The changes of emission color from CdTe QDs in water droplets during the evaporation of solvent have been observed. The quenching of the emission from small dots accompanied by the enhancement of the emission from large dots indicate that Förster resonance energy transfer processes occur from donors (small dots) to acceptors (large dot) for CdTe QDs system. Excitation (PLE) spectra confirm that the changes of the luminescence were attributed to the resonance energy transfer between small and larger dots in a mixed QD system.
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Document Type: Research Article

Publication date: 01 November 2011

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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