Database of Eu2+ and Ce3+ Doped Phosphors for Development of Violet-light Excited White LEDs

doi:10.15541/jim20250116

Abstract

Abstract: Commercial phosphor-converted white LEDs (pc-WLEDs) face two inherent limitations, namely, blue light hazard and low color rendering index, due to the use of blue LEDs as excitation source. To address these challenges, violet LEDs are proposed as an alternative solution. Currently, phosphors that can be efficiently excited by violet light (with wavelength from 400 to 420 nm) remain under development. In this study, we utilize large language models to construct a comprehensive database of Eu²⁺ and Ce³⁺ doped phosphors for discovering novel violet-excited phosphors. A total of 822 phosphor data entries, including elemental compositions, crystal structures, and excitation/emission wavelengths, are extracted and validated from 9,551 research papers. Compared with Ce³⁺ doped phosphors, the Eu²⁺ are in general more suited for violet-excited phosphors, as well as red-emitting phosphors. In particular, Eu²⁺ doped nitrides and sulfides are worth of exploration for violet-excited phosphors. This database is expected to be useful in future development of phosphors for pc-WLEDs based on artificial intelligence methods.

Key words: phosphor, violet LED, large language model, database

CLC Number:

TB34

ZHOU Zichun, ZHANG Xiang, MING Chen, SUN Yiyang. Database of Eu²⁺ and Ce³⁺ Doped Phosphors for Development of Violet-light Excited White LEDs[J]. Journal of Inorganic Materials, DOI: 10.15541/jim20250116.

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Database of Eu²⁺ and Ce³⁺ Doped Phosphors for Development of Violet-light Excited White LEDs

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