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Single dye molecules in an oxygen-depleted environment as photostable organic triggered single-photon sources

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2 Author(s)
Lill, Y. ; Nano-Optics Group, National Center of Competence in Nanoscience, Institute of Physics, University of Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland ; Hecht, B.

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We demonstrate, that under nitrogen atmosphere, 20% of single DiIC18(3) (1,1-dioctadecyl-3,3,3,3-tetramethylindocarbocyanine perchlorate) molecules in poly(methylmethacrylate) show an extremely low photobleaching quantum yield of (4.66±0.07)×10-8 together with a reasonably short triplet lifetime. We exploit these properties to demonstrate that the system can be used to produce a triggered single-photon source based exclusively on organic materials. © 2004 American Institute of Physics.

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Applied Physics Letters  (Volume:84 ,  Issue: 10 )