Nanocrystal hybridized scintillators for enhanced detection and imaging on Si platforms in UV

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Mutlugun E. , Soganci I. M. , Demir H. V.

OPTICS EXPRESS, vol.15, no.3, pp.1128-1134, 2007 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 15 Issue: 3
  • Publication Date: 2007
  • Doi Number: 10.1364/oe.15.001128
  • Title of Journal : OPTICS EXPRESS
  • Page Numbers: pp.1128-1134


We report on the conception, design, fabrication, experimental characterization, and theoretical analysis of nanocrystal scintillators hybridized on Si detectors and CCDs for enhanced detection and imaging in UV. Integrating luminescent CdSe/ZnS core-shell nanocrystals (NCs of 3.2 and 5.2 nm in diameter with 5% size distribution) to efficiently convert incident UV radiation to visible emission, we demonstrate hybrid NC-Si photodetectors that exhibit significantly improved responsivity between 200-240nm, experimentally with a two orders of magnitude peak enhancement and theoretically with a three orders of magnitude peak enhancement. Such nanocrystal based scintillators hold great promise in UV detection and imaging on Si platforms. (c) 2007 Optical Society of America.