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  • Composite color converters ...
    Shakhno, A.; Witkiewicz-Łukaszek, S.; Gorbenko, V.; Zorenko, T.; Zorenko, Yu

    Optical materials. X, 20/May , Letnik: 22
    Journal Article

    The study is dedicated to investigation of the structural, luminescent and photoconversion properties of epitaxial converters based on the single crystalline films of Ce3+ doped Ca3Sc2Si3O12 (CSSG:Ce) garnet. These SCFs with different thicknesses were grown using the liquid phase epitaxy method onto: (i) undoped Gd3Ga2.5Al2.5O12 (GAGG (2.5)) substrates; (ii) Ce3+ doped Gd3Ga2.5Al2.5O12 (GAGG:Ce (2.5) and Gd3Ga3Al2O12 (GAGG:Ce (3) substrates. For the first time, we have examined the phosphor conversion properties of the mentioned film and film-crystal converters under the excitation of a blue LED. We have established a trend line in the color coordinate diagram by systematically varying the film thickness in the 2–30 μm, 17–22 μm and 7–22 μm ranges for CSSG:Ce film/GAGG (2.5) crystal, CSSG:Ce film/GAGG:Ce (2.5) crystal and CSSG:Ce film/GAGG:Ce (3) crystal composite converters, respectively. •Ca3Sc2Si3O12:Ce (CSSG:Ce) single-crystalline films (SCFs) grown onto Gd3Ga2.5Al2.5O12 (GAGG) crystal substrates by the liquid phase epitaxy (LPE) technique.•The optical behavior of the CSSG:Ce SCFs onto GAGG substrates was investigated using absorption and cathodoluminescence spectra.•Prototypes of a white LED based on the film and composite phosphor-converters and a blue LED were developed.