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Optical temperature sensing based on thermal, non-thermal coupled levels and tunable luminescent emission colors of Er3+/Tm3+/Yb3+ tri-doped Y7O6F9 phosphor

PhotonicsOptical MaterialsEngineeringOptical PropertiesLuminescent GlassOptical SensorApplied PhysicsUpconversion LuminescenceOptical TemperatureLuminescence PropertyOptoelectronicsPhosphorescence