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The Effect of Defects on Inorganic Luminescent Materials

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Wide-Gap Luminescent Materials: Theory and Applications

Part of the book series: Electronic Materials: Science and Technology ((EMST,volume 2))

Abstract

Defects present in host crystals can have a strong effect on the luminescent properties of dopant ions in these materials. These effects manifest both in the optical and electrical properties of these crystals.

In this chapter, we will present optical and electrical techniques to determine the defect state of a crystal host and its luminescent dopants. First, we will consider how electrical conductivity measurements can determine the defect structure of the host crystal and its relationship to the optical properties of the dopants. Then, we will discuss how different dopants, and sometimes even the same dopant, can interfere with the expected property of a luminescent ion. These interactions can be seen by site selection spectroscopy and by the dynamic analysis of energy transfer between ions. Finally, we will show how cathodoluminescent measurements demonstrate the competition between defects and dopants for energy in luminescent properties. We present the experimental methods in this chapter as examples of the increasingly sophisticated techniques being used to understand the effect of defects on luminescence activity.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, P.O. Box 653, 84105, Beer-Sheva, Israel

    S. R. Rotman

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  1. Ben Gurion University of the Negev, Israel

    Stanley R. Rotman

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Rotman, S.R. (1997). The Effect of Defects on Inorganic Luminescent Materials. In: Rotman, S.R. (eds) Wide-Gap Luminescent Materials: Theory and Applications. Electronic Materials: Science and Technology, vol 2. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-4100-4_3

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  • DOI: https://doi.org/10.1007/978-1-4615-4100-4_3

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-0-7923-9837-0

  • Online ISBN: 978-1-4615-4100-4

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