Investigation of host-to-activator energy transfer and surface losses in SrY2O4:Eu under VUV excitation |
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Authors: | Ryan Atkins |
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Institution: | Department of Chemistry, Central Washington University, 400 E. University Way, Ellensburg, WA, USA |
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Abstract: | We have completed a study of the optical properties of SrY2O4:Eu3+ under vacuum ultraviolet (VUV) excitation. Reflectance measurements on the undoped material yield a calculated band gap of about 6.1 eV. Studies on the doped material indicate that Eu3+ occupies the Y(1) and Y(2) sites in this host. Host-to-activator energy transfer calculations indicate a preference for transfer to Eu3+ at the Y(2) site. Modeling of the transfer efficiency data leads us to estimate that about 35% of absorbed radiation is lost to the surface under excitation near the band edge. |
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Keywords: | SrY2O4 Eu3+ VUV spectroscopy Energy transfer Surface loss |
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