In our previous report, we developed several temperature sensing charts showing phosphorescence afterglows ranging from blue to green. Considering the remarkable difference in the phosphorescence afterglows of TPXZPhCor as a function of temperature, the temperature sensing charts using the 30 wt% TPXZPhCor doped mCP films exhibit a much wider color palate than that in our previous study, ranging from cyan at 298 K to orange at 77 K (Figure ). To the best of our knowledge, there are only a limited number of reports of temperature sensing based on phosphorescence afterglow materials. Lee et al. reported a temperature sensor in a microfluidic device based on an organic RTP compound, Br6A, doped in a temperature-sensitive polymer matrix; however, no temperaturedependent emission color change was observed. Qin et al. demonstrated that a fluorine-substituted organic phosphor is thermo-responsive in both crystals and doped films, where the phosphorescence lifetime was found to increases linearly with decreasing temperature; however, no afterglow color change was observed, which limits its application as a rapid naked eye temperature sensor.