ErF3 microcrystals controllably deposited in perfluoride glass for upconversion red emission
Optics Letters(2023)
Abstract
To the best of our knowledge, this paper first reports ErF3 microcrystals controllably deposited in perfluoride glass using phase-separation engineering techniques. The sample exhibited strong upconversion red-light emission owing to the small distance between Er3+ ions and low phonon energy (585 cm-1). The sample has a high red/green ratio of up to 18.6, which, to our knowledge, is the highest reported value in Er3+-doped fluoride glass ceramics. Furthermore, the sample has a long fluorescence lifetime (3.18 ms @660 nm), good color saturation (0.6255,0.3707), and good thermal stability ( increment E = 0.31eV). Therefore, this sample has the potential for application across multiple fields, such as color display, visible laser, and lighting. (c) 2023 Optica Publishing Group
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Key words
perfluoride glass,emission,red,up-conversion
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