Surface patterning of nonscattering phosphors for light extraction

Surface patterning of nonscattering phosphors for light extraction

A two-dimensional TiO₂ photonic crystal layer is fabricated on Y3Al5O12:Ce3+ (YAG:Ce) yellow ceramic plate phosphor (CPP) to enhance its forward emission. A triangle lattice pattern is defined by molecular transfer lithography with polyvinyl alcohol nanostructured templates. A 4.5 improvement in yel...

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Veröffentlicht in:Optics letters 2013-08, Vol.38 (15), p.2796-2799
Hauptverfasser: Mao, An, Karlicek, Jr, Robert F
Format: Artikel
Sprache:eng
Schlagworte:
Ceramics
Emission
Lithography
Patterning
Phosphors
Photonic crystals
Titanium dioxide
Triangles
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Zusammenfassung:A two-dimensional TiO₂ photonic crystal layer is fabricated on Y3Al5O12:Ce3+ (YAG:Ce) yellow ceramic plate phosphor (CPP) to enhance its forward emission. A triangle lattice pattern is defined by molecular transfer lithography with polyvinyl alcohol nanostructured templates. A 4.5 improvement in yellow emission is achieved from photonic-crystal-structure (PhC) patterned YAG:Ce CPP compared to a nonpatterned one. The PhC-patterned YAG:Ce CPP shows a collimated far-field intensity emission pattern compared to the random-patterned and nonpatterned one.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.38.002796