Observation of Intra‐ and Inter‐Configurational Luminescence of Pr3+‐Doped Strontium Phosphate Glasses

Abstract

Emissions due to inter‐configurational 4f15d1‐4f2 electronic transitions of Pr3+ ions are scarcely observed in phosphate glasses. In this work, the intense UV emissions (at 311 and 327 nm) owing to the inter‐configurational f‐d transitions of Pr3+ have been reported in Pr3+‐doped strontium phosphate glasses. Characteristic blue (481, 488 nm), green (522 nm), orange (597, 610 nm), and red (638 nm) emissions are also observed due to the intra‐configurational f‐f transitions. Possible mechanisms controlling the intra‐ and inter‐configurational transitions of Pr3+ ions are discussed.