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

Q2 Engineering

Optical Materials: X Pub Date : 2024-05-01 DOI:10.1016/j.omx.2024.100328

A. Shakhno , S. Witkiewicz-Łukaszek , V. Gorbenko , T. Zorenko , Yu. Zorenko

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Abstract

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 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.

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基于 Ca3Sc2Si3O12:Ce 单晶膜的复合色彩转换器

本研究致力于研究基于掺杂 Ce3+ 的 Ca3Sc2Si3O12（CSSG：Ce）石榴石单晶薄膜的外延转换器的结构、发光和光电转换特性。这些不同厚度的 SCF 采用液相外延法生长在：(i) 未掺杂的 Gd3Ga2.5Al2.5O12 (GAGG (2.5)) 基底上；(ii) 掺杂 Ce3+ 的 Gd3Ga2.5Al2.5O12 (GAGG:Ce (2.5) 和 Gd3Ga3Al2O12 (GAGG:Ce (3)) 基底上。我们首次考察了上述薄膜和薄膜晶体转换器在蓝光 LED 激发下的荧光粉转换特性。我们通过系统地改变 CSSG:Ce 薄膜/GAGG(2.5) 晶体、CSSG:Ce 薄膜/GAGG:Ce(2.5) 晶体和 CSSG:Ce 薄膜/GAGG:Ce(3) 晶体复合转换器的薄膜厚度，分别在 2-30μm、17-22μm 和 7-22μm 范围内建立了色坐标图趋势线。

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来源期刊

Optical Materials: X Engineering-Electrical and Electronic Engineering

CiteScore

3.30

自引率

0.00%

发文量

审稿时长

91 days