Physical Properties of KY1-xErxF4 Investigated by Photoluminescence

Ta Ryeong Park

doi:10.4028/www.scientific.net/AMR.717.129

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 717Physical Properties of KY1-xErxF4 Investigated by...

Physical Properties of KY_1-xEr_xF₄ Investigated by Photoluminescence

Abstract:

Trivalent erbium ions, Er³⁺, in KY_1-xEr_xF₄ crystal produce up-converted photoluminescence (PL) band around 406 nm when excited by 488 or 532 nm photons. By using time-resolved spectroscopy, it was found that the up-conversion arises from the energy transfer processes between the excited Er³⁺ ions. Thermal behavior reveals that the 406 nm up-conversion is a phonon-assisted process. There is also a secondary up-conversion by level-crossing where a PL band around 520 nm is produced by the 532 nm excitation. High pressure causes the crystal to undergo a structural phase transition, as monitored by the PL it produces.

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Advanced Materials Research (Volume 717)

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129-132

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.717.129

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Online since:

July 2013

Authors:

Ta Ryeong Park

Keywords:

Erbium, Fluorescence, High-Pressure, Phonon, Photoluminescence (PL), Radiative Process, Structural Phase Transition, Up-Conversion

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