NaCaPO 4 :Ce 3+ ,Tb 3+ phosphors were prepared by a solidstate reaction. Their luminescence properties reveal that an efficient energy transfer from the Ce 3+ to Tb 3+ ions occurs, and its mechanism is a resonant type by means of a dipolequadrupole reaction. The critical distance of the energy transfer has been calculated by concentration-quenching and spectral-overlap methods. The varied emitted color of the phosphors from blue to yellow-greenish can be achieved by properly tuning the relative ratio of Ce 3+ and Tb 3+ through

The development of new storage media to meet the demands for diverse information storage scenarios is a great challenge. Here, a series of lanthanide‐based luminescent organogels with ultrastrong mechanical performance and outstanding plasticity are developed for patterned information storage and encryption applications. The organogels possessing outstanding mechanical properties and tunable luminescent colors are prepared by electrostatic and coordinative interactions between natural DNA, synthetic ligands, and rare earth (RE) ions. The organogel‐REs can be stretched by 180 times and show an ultrastrong breaking strength of 80 MPa. A series of applications with both information storage and encryption, such as self‐information pattern, quick response (QR) code, and barcode, are successfully demonstrated by the organogel‐REs. The developed information storage systems have various advantages of good processability, high stretchability, excellent stability, and versatile design of information patterns. Therefore, the organogel‐RE‐based information storage systems are suitable for applications under different scenarios, such as flexible devices under repeating rude operations. The advancements will enable the design and development of luminescent organogel‐REs as information storage and encryption media for various scenarios.