Composite color converters based on the Ca3Sc2Si3O12:Ce single crystalline films

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Composite color converters based on the Ca3Sc2Si3O12:Ce single crystalline films

Version 1.1

Shakhno, Anna; Witkiewicz-Łukaszek, Sandra; Gorbenko, Vitalii; Zorenko, Tetiana; Zorenko, Yuriy, 2025, "Composite color converters based on the Ca3Sc2Si3O12:Ce single crystalline films", https://doi.org/10.18150/2LZGMJ, RepOD, V1

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Description

The study is dedicated to the 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 Gd₃Ga_2.5Al_2.5O₁₂ (GAGG (2.5)) substrates; (ii) Ce³⁺ doped Gd₃Ga_2.5Al_2.5O₁₂ (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.

(2024-05-29)

Subject

Physics

Keyword

Ca-Si based garnets, Ce3+ dopant, Liquid phase epitaxy, Luminescence, Phosphor-converters, WLED

Related Publication

A. Shakhno, S. Witkiewicz-Łukaszek, V. Gorbenko, T. Zorenko, Yu. Zorenko, Composite color converters based on the Ca3Sc2Si3O12:Ce single crystalline films, Optical Materials: X 22 (2024) 100328.. https://doi.org/10.1016/j.omx.2024.100328 https://www.sciencedirect.com/science/article/pii/S2590147824000408 doi: 10.1016/j.omx.2024.100328

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CC0 Creative Commons Zero 1.0

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		Figures.docx MS Word (docx) - 1.1 MB - Mar 14, 2025 - 0 Downloads MD5: a619d863f2919fb95869c76540a74aff License: CC0 Creative Commons Zero 1.0 The file contains data of composite color converters based on CSSG:Ce SCFs grown on GAGG-based substrates for use in white LED (WLED) applications. The file includes the following components: Figure 1 presents XRD patterns of CSSG:Ce SCFs grown on a GAGG (2.5) substrate, confirming structural integrity. Figure 2 compares room-temperature (RT) absorption spectra (log scale) of CSSG:Ce films grown on different GAGG-based substrates. Figure 3 illustrates RT cathodoluminescence (CL) spectra of CSSG:Ce SCFs on GAGG substrates, compared with GAGG:Ce crystals of varying gallium content. Figure 4 showcases the emission spectrum and chromaticity diagram of a WLED prototype utilizing a 450 nm LED chip with CSSG:Ce thin films on GAGG substrates. Figure 5 maps chromaticity coordinates of WLEDs fabricated with CSSG:Ce SCFs on different GAGG substrates, comparing color properties and efficiency. This dataset provides insights into the potential of CSSG:Ce as a color converter for WLEDs, highlighting the tunable optical properties of the material when integrated with different substrates.	Download
		Figures.pdf Adobe PDF - 498.7 KB - Mar 14, 2025 - 0 Downloads MD5: 301fa289e2eef0214ac73f4411136d59 License: CC0 Creative Commons Zero 1.0 The file contains data of composite color converters based on CSSG:Ce SCFs grown on GAGG-based substrates for use in white LED (WLED) applications. The file includes the following components: Figure 1 presents XRD patterns of CSSG:Ce SCFs grown on a GAGG (2.5) substrate, confirming structural integrity. Figure 2 compares room-temperature (RT) absorption spectra (log scale) of CSSG:Ce films grown on different GAGG-based substrates. Figure 3 illustrates RT cathodoluminescence (CL) spectra of CSSG:Ce SCFs on GAGG substrates, compared with GAGG:Ce crystals of varying gallium content. Figure 4 showcases the emission spectrum and chromaticity diagram of a WLED prototype utilizing a 450 nm LED chip with CSSG:Ce thin films on GAGG substrates. Figure 5 maps chromaticity coordinates of WLEDs fabricated with CSSG:Ce SCFs on different GAGG substrates, comparing color properties and efficiency. This dataset provides insights into the potential of CSSG:Ce as a color converter for WLEDs, highlighting the tunable optical properties of the material when integrated with different substrates.	Preview Download
		Tables.docx MS Word (docx) - 18.9 KB - Mar 14, 2025 - 0 Downloads MD5: 8c53cbef7a6834bb77ae41d76b67b7dc License: CC0 Creative Commons Zero 1.0 The file contains data about the composition of CSSG:Ce SCFs and their application in white light-emitting diodes (WLEDs). It includes the following tables: Table 1: Shows the nominal and real compositions of LPE-grown CSSG:Ce SCFs in A, B, and C series. This includes details on the elements used and their proportions in the melt-solution process. Table 2: Compares the Color Rendering Index (CRI), Correlated Color Temperature (CCT), and CIE coordinates of epitaxial structures based on CSSG:Ce SCF samples grown on GAGG substrates (with different gallium content: GAGG (2.5), GAGG:Ce (2.5), and GAGG:Ce (3.0)). These values help assess the color quality and performance of the films for LED applications. This dataset provides insights into the potential of CSSG:Ce as a color converter for WLEDs.	Download
		Tables.pdf Adobe PDF - 173.6 KB - Mar 14, 2025 - 0 Downloads MD5: 37b6128b278f7864f5f3e5e41c567f01 License: CC0 Creative Commons Zero 1.0 The file contains data about the composition of CSSG:Ce SCFs and their application in white light-emitting diodes (WLEDs). It includes the following tables: Table 1: Shows the nominal and real compositions of LPE-grown CSSG:Ce SCFs in A, B, and C series. This includes details on the elements used and their proportions in the melt-solution process. Table 2: Compares the Color Rendering Index (CRI), Correlated Color Temperature (CCT), and CIE coordinates of epitaxial structures based on CSSG:Ce SCF samples grown on GAGG substrates (with different gallium content: GAGG (2.5), GAGG:Ce (2.5), and GAGG:Ce (3.0)). These values help assess the color quality and performance of the films for LED applications. This dataset provides insights into the potential of CSSG:Ce as a color converter for WLEDs.	Preview Download

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