A new red phosphor for high time-resolved thermal sensitivity and plant growth.

Luminous materials with a rapid lifetime response have garnered significant interest in sensing technology. In this work, the transition element Mn doped phosphor SrTiO:Mn was synthesized by a traditional high temperature solid phase method. The emission peak of SrTiO:0.009Mn aligns closely with the absorption peak of phytochrome P. The temperature-dependent photoluminescence (PL) spectra and lifetime of SrTiO:0.009Mn were examined within the temperature range of 273-323 K. The temperature sensing characteristics based on the lifetime were analyzed, and the maximum relative sensitivity was 14.93% K at 309 K. The high sensitivity of the SrTiO:0.009Mn phosphor makes it a promising material for temperature sensing applications.