High-sensitivity and wide-temperature-range dual-mode optical thermometry under dual-wavelength excitation in a novel double perovskite tellurate oxide

The high-sensitivity and wide-temperature-range dual-mode optical thermometry for novel double perovskite SrLaLiTeO 6 :Mn 4+ ,Dy 3+ phosphor was exploited. Notably, the relative sensitivity ( S R ) values can be manipulated by different excitation wavelength.