Common luminescence intensity fluctuations of single particle and single molecules in non-conducing matrices

C. von Borczyskowski, F. Cichos, J. Martin, J. Schuster, A. Issac, J. Brabandt

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Optical spectroscopy in combination with wide field or confocal optical microscopy enables the investigation of single quantum objects such asorganic molecules, II/VI semiconductor quantum dots and silicon nanocrystals.They all have fluctuations of luminescence intensities on time scales longerthan μs in common. A comparison reveals that despite the large differences of the nature of the respective quantum objects, the intensity fluctuations are related to a slow ionisation process followed by a trapping of the photoejected charge in the non-conducing environment. Detailed aspects of the dynamics are controlled by the dielectric propertiesof the matrix.

Original languageEnglish
Pages (from-to)13-25
Number of pages13
JournalEuropean Physical Journal: Special Topics
Issue number1
Publication statusPublished - May 2007


ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry

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