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

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 wavelengths from 400 to 420 nm) remain under development still. 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, have been extracted and validated from 9551 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 the future development of phosphors for pc-WLEDs based on artificial intelligence methods. The datasets in this article are listed in Science Data Bank at http://doi.org/10.57760/sciencedb.34314.