Abstract
Warm white light-emitting diodes (LEDs) based on blue LED chips require abundant red light emission, and the conversion of the blue light emitted by the chips to a red light is closely related to their performances. Using a single-phase phosphor with abundant red emission in combination with blue LED chips is a potential way to achieve warm white LEDs. In our experiments, to obtain an orange phosphor suitable for warm white LEDs, phosphor samples with nominal compositions of (Ca3−3xCe0.06Lu3x−0.06)(Sc2−2xMg2x)(Si3−xAlx)O12 (x = 0.2−1.0) were synthesized by conventional solid-state reaction. With increasing the value of x in the nominal composition, the emission spectrum of the samples under blue light (450 nm) excitation is gradually red-shifted, and the corresponding emission color gradually changes from green to orange. White LEDs were fabricated by combining the prepared orange phosphor sample (x = 1.0) with blue InGaN LED chips. The measured luminescence performances of white LEDs demonstrate the potential of this orange phosphor for use in warm white LEDs.
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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Funding
This study was supported by Natural Science Foundation of Inner Mongolia (Grant Numbers 2020MS01017, 2022QN01006) and Innovation Foundation of Inner Mongolia University of Science and Technology (Grant Number 2019QDL-B37).
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by SJ, JQ, SH, JL, and YM. The first draft of the manuscript was written by JQ and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Qiao, J., Jia, S., He, S. et al. Modification of the green CSS:Ce3+ phosphor by ion substitution for obtaining an orange phosphor for white LEDs. J Mater Sci: Mater Electron 34, 1127 (2023). https://doi.org/10.1007/s10854-023-10493-9
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DOI: https://doi.org/10.1007/s10854-023-10493-9