Near infrared to near infrared (NIR–NIR) photo-stimulated persistent luminescence (PSPL) has shown excellent potential in high-resolution bioimaging for deep tissues. However, the PSPL in NIR-Ⅱ region (900–1700 nm) is still lacking. In this work, Ca₂Ga₂GeO₇:Yb³⁺,Tb³⁺ (CGGYT) phosphor with unique low-dimensional crystal structure was synthesized by high-temperature solid–state reaction. Thanks to the carriers transferring from deep traps to shallow ones induced by low energy light, the 978 nm PSPL originating from ²F_5/2 to ²F_7/2 transition of Yb³⁺ induced by multimode stimulating (980 nm or WLED) is successfully realized after pre-excited by UV lamp. The NIR PSPL of the specimen can be repeatedly stimulated after placed in dark for 12 h. Moreover, the results indicate that codoping with Tb³⁺ can significantly enhance the NIR-II PSPL owing to the quantum cutting persistent energy transfer (QC PET) from Tb³⁺ to Yb³⁺. Our study points to a new direction for the future development of multimode PSPL materials for bioimaging or multimode optical storage applications.

近红外到近红外 (NIR-NIR) 光刺激持久发光 (PSPL) 在深层组织的高分辨率生物成像中显示出巨大的潜力。然而，NIR-Ⅱ区（900-1700 nm）的PSPL仍然缺乏。本工作通过高温固相反应合成了具有独特低维晶体结构的Ca ₂ Ga ₂ GeO ₇ :Yb ³⁺ ,Tb ³⁺ (CGGYT)荧光粉。由于低能量光诱导载流子从深陷阱转移到浅陷阱，978 nm PSPL 源自Yb ^{3+ 的2} F _5/2到² F _7/2跃迁通过紫外灯预激发后，成功实现了多模刺激（980 nm 或 WLED）诱导。样品的 NIR PSPL 在避光 12 h 后可反复刺激。此外，结果表明，用铽共掺杂³⁺可以在NIR-II PSPL由于量子切割持久能量转移（QC PET）从铽显著提高³⁺到的Yb ³⁺。我们的研究为用于生物成像或多模光存储应用的多模 PSPL 材料的未来发展指明了新的方向。