Progress of Ce3+/Eu2+ doped phosphors for violet chip based full-spectra lighting

Abstract

White light-emitting diode (WLED) has been used in various lighting scenes because of its merits as low energy consumption, high brightness, long lifetime, portable size, etc. In a recent development, full-spectra WLED with uniform spectra and a high color rendering index (CRI) attracted more attention. The discovery and design of phosphor materials suitable for full-spectra WLED is a more recent research hotspot. In this review, the evolution of artificial lighting and the requirements for full-spectra WLED fabrication are outlined. The research progress of Ce3+/Eu2+ doped phosphors that can be excited by violet light, including the structural models and spectral regulation are summarized. Secondly, high-performance multi-color phosphors with high quantum efficiency and luminescence thermal stability are screened for full-spectra WLED. Finally, the development prospects and challenges of Ce3+/Eu2+ doped phosphors for full-spectra lighting are demonstrated. This review will not only promote the research of Ce3+/Eu2+ doped phosphors for full-spectra WLED but also contribute to a thorough comprehension of full-spectra lighting. It also avails to develop more Ce3+/Eu2+ doped phosphors with better luminescence properties meeting the full-spectra WLED encapsulation.