Scientists of Shanghai University grew a series of (Lu_1-xYb_x)₂O₃ single crystals (x = 0.002, 0.005, 0.01, 0.02, 0.1, 1) using a ScIDre HKZ for the optical floating zone crystal growth.

X-ray excited luminescence and vacuum ultraviolet spectroscopy were used to characterize the optical properties and to investigate the influence of Yb³⁺ concentration and temperature on the luminescence behavior.

A luminescence model was proposed to explain the charge transfer emission and non-radiative quenching processes. The study provides insight into optimizing Yb-doped Lu₂O₃ as an ultrafast scintillator.

https://www.sciencedirect.com/science/article/abs/pii/S0272884225021182