Luminescence properties and NIR-II ratiometric thermometry of Er³ ⁺/Ho³ ⁺/Yb³ ⁺-doped Bi₄Ti₃O₁₂ perovskite

2026-08-03

PRE

Zhiqi Yao

Kejie Li

Jiaqi Zhao

Haicheng Xia

Zuoling Fu *

Sung Heum Park *

DOI：10.1016/j.materresbull.2026.114366

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• A RE-doped Bi4Ti3O12 perovskite-based luminescence material is developed. • Dual NIR-II emissions of Ho3+/Er3+ are achieved under 980 nm excitation. • High performance (Sr=1.3% K-1) phonon-assisted ratiometric thermometer is constructed.

Keywords:

Perovskite

Down-shifting luminescence

Ratiometric thermometer

Luminescence properties and NIR-II ratiometric thermometry of Er³ ⁺/Ho³ ⁺/Yb³ ⁺-doped Bi₄Ti₃O₁₂ perovskite

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