Structures, photoluminescence, and principles of self-activated phosphors. Issue 3 (5th January 2023)

• Record Type: Journal Article
• Authors: Zhang, Jiawei; Song, Ziling; Cai, Peiqing; Wang, Xiangfu
• Is Part Of: Physical chemistry chemical physics. Volume 25:Issue 3(2023)
• Page Start: 1565
• Page End: 1587
• Publication Date: 2023-01-05
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/d2cp03742d
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : We reviewed the structures, photoluminescence principles, properties, and applications of state-of-the-art self-activated phosphors, such as rare-earth and transition metal ions, some oxide compounds, and all-inorganic semiconductors. Abstract : Self-activated phosphors without any luminescent dopants, usually display excellent optical properties, such as high oscillator strength, large Stokes shift, and strong luminescence efficiency, and thus have been widely investigated by researchers for several decades. However, their recent advancements in scintillators, white-light illumination, displays and optical sensors compel us to urgently understand the basic principles and significant technological relevance of this worthy family of materials. Herein, we review the structures, photoluminescence principles, and applications of state-of-the-art self-activated phosphors, such as borate, gallate, niobate, phosphate, titanate, vanadate, tungstate, nitrides, oxyfluoride, perovskite, metal halides, and carbon dots. The photoluminescence principles of self-activated phosphors are mainly summarized as transitions between energy levels of rare-earth and transition metal ions, charge transfer transitions of some oxide compounds, and luminescence in all-inorganic semiconductors. The different self-activated phosphors exhibit various structures and site-dependent spectra. Additionally, we discuss the application prospect and main challenges of self-activated phosphors.