title: Surface patterning of nonscattering phosphors for light extraction.
abstract: 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.
authors.affiliation: Smart Lighting Engineering Research Center, Rensselaer Polytechnic Institute, Troy, New York 12180, USA. maoanjoy@gmail.com
authors.forename: An
authors.initials: A
authors.lastname: Mao
authors.forename: Robert F
authors.initials: RF
authors.lastname: Karlicek