Pure red upconversion luminescence and optical thermometry of Er³⁺ doped sensitizer-rich SrYbInO₄ phosphors

Abstract

The structure, upconversion luminescence properties and optical thermometry application of Er3+ doped sensitizer-rich SrYbInO4 phosphors have been investigated.

Combinations of Superior Inorganic Phosphors for Level‐Tunable Information Hiding and Encoding

“…Rich luminous colors are obtained on the basis of different Ln 3+ and their doping contents. To date, diverse cross‐relaxation (CR) and energy back transfer (EBT) processes between the same or various Ln 3+ are proved, including but not limited to (CR1) 4 S 3/2 (Er 3+ ) + 4 I 13/2 (Er 3+ ) → 4 F 9/2 (Er 3+ ) + 4 I 11/2 (Er 3+ ), [ 54 ] (EBT1) 4 S 3/2 (Er 3+ ) + 2 F 7/2 (Yb 3+ ) → 4 I 13/2 (Er 3+ ) + 2 F 5/2 (Yb 3+ ) , [ 81 ] (CR2) 4 F 7/2 (Er 3+ ) + 4 I 11/2 (Er 3+ ) → 4 F 9/2 (Er 3+ ) + 4 F 9/2 (Er 3+ ), [ 82 ] (CR3) 1 G 4 (Tm 3+ ) + 3 F 4 (Tm 3+ ) → 3 F 2,3 (Tm 3+ ) + 3 H 4 (Tm 3+ ), [ 83 ] (CR4) 5 F 4 , 5 S 2 (Ho 3+ ) + 5 I 8 (Ho 3+ ) → 5 I 4 (Ho 3+ ) + 5 I 7 (Ho 3+ ), [ 84 ] and (CR5) 1 G 4 (Tm 3+ ) + 4 I 15/2 (Er 3+ ) → 3 F 4 (Tm 3+ ) + 4 F 9/2 (Er 3+ ). [ 85 ] Due to the influence of these complex energy transfer processes, UCL outputs would be manipulated in different doping systems.…”

Excitation-wavelength-dependent anti-thermal quenching of upconversion luminescence in hexagonal NaGdF4:Nd3+/Yb3+/Er3+ nanocrystals

“…In the past decades, lanthanide-based photon UC has been confirmed to be a promising strategy for addressing many challenging issues, such as highly sensitive temperature sensing, 1,2 dynamic anti-counterfeiting, 3 super-resolution microscopy, 4 deeptissue bio-imaging, [5][6][7] etc. Unfortunately, real-world applications have been hindered due to some limitations (e.g., thermally quenched luminescence 8 ).…”

Modulated Luminescence of Lanthanide Materials by Local Surface Plasmon Resonance Effect

“…Improving the luminescence efficiency and regulating the luminescence properties of lanthanide materials have become the focus on the research of these materials. Many ways to enhance luminescence have been demonstrated, such as high-temperature solid status reaction method [ 6 ], electric field enhancement [ 7 ], aggregation-induced emission [ 8 ], and so on. Remarkable progress has been made over the past ten years in lanthanide materials’ luminescence enhancement, which leads to the modification of the excitation or emission process and the alterations of luminescence lifetimes and quantum yields of lanthanide materials.…”