Er/Mn Co‐Activated SrZnOS Multimodal Luminescence Materials for Optical Sensing

Multimodal luminescence materials are very important for advanced anti‐counterfeiting, intelligent optical sensing, and so on. However, the integration of multimodal response and multicolor luminescence into a single material is still a huge challenge. Based on the Mn 2+ and Er 3+ dual‐activator strategy, a multimodal luminescence material of piezoelectric SrZnOS with force, thermal, light, and high‐energy radiation response is successfully designed and prepared. It is of note that the color‐tunable ratiometric mechanoluminescence is realized under the stimulation of force. In addition, the microcrystal can be applied to the upconversion luminescence temperature measurement technology, achieving the non‐contact real‐time detection of temperature in the wide temperature range of 303 to 543 K with a relative sensitivity reaching 1.099%·K −1 . More importantly, the SrZnOS:Er/Mn@polydimethylsiloxane film exhibits a good linear response to X‐ray dose, with the light yield of 26260 Ph MeV −1 (≈2.6 times that of commercial BGO) and detection limit as low as 1.08 µGy air s −1 . This work introduces an important reference for exploring advanced multimodal luminescence materials and shows great potential for integrated multifunctional optical sensing.