如果在掺杂Eu3+的基质中，用短波长激发，出现了明显的所谓的photo-degradation，那么这大概率是属于长余辉的trapping/OSL detrapping。比如[Unique photoluminescence degradation/recovery phenomena in trivalent ion-activated phosphors]中，用氙灯280 nm照TGG:Eu3+样品1分钟，就有60%以上的强度衰减。

up/downward charging curve:

• [Wavelength dependent loading of traps in the persistent phosphor SrAl2O4:Eu2+, Dy3+]

downward charging curve:

• [Importance of Evaluating the Intensity Dependency of the Quantum Efficiency: Impact on LEDs and Persistent Phosphors]
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Tb³⁺-Eu³⁺ photo-degradation

在Jonas的[Broadband infrared LEDs based on europium-toterbium charge transfer luminescence]中，存在如下的MMCT(electron hopping)$$ \mathrm{Eu}^{2+} \mathrm{Tb}^{3+} \leftrightarrow \mathrm{Eu}^{3+} \mathrm{Tb}^{2+} $$

在[Sensitizing Eu³⁺ with Ce³⁺ and Tb³⁺ to Make Narrow-Line Red Phosphors for Light Emitting Diodes]中，通过掺入bridge ions Gd³⁺，实现Ce³⁺-(Tb³⁺)_n-Eu³⁺的能量传递，否则的话Ce³⁺-Eu³⁺的能量传递会有mutual quenching。

在[Unique photoluminescence degradation/recovery phenomena in trivalent ion-activated phosphors]中，

在[Abnormal photoluminescence phenomena in (Tb3+, Eu3+) codoped Ga2O3 phosphor]

la2wo6 eu3+

在[Crystal Structure, Electronic Structure, and Photoluminescence Properties of La3BW1−xMoxO9:Eu3+ Red Phosphor]