Kumar, Ashish2025-05-292025-05-292025-05http://hdl.handle.net/123456789/4364enTransmission electron microscopy (TEM)Power-dependent measurementsLuminescence propertiesDISTDS1703APHSynthesis and upconversion emission studies of Er3+, Yb3+ DOPED Na(Ln)F4 (Ln = Gd, Y) nanophosphors for contactless optical thermometry applicationThesis