The influence of the Pr3+ 4f15d1 configuration on the 1S0 emission efficiency and lifetime in LaPO4
作者： A.M. Srivastava , A.A. Setlur , H.A. Comanzo , W.W. Beers , U. Happek
DOI: 10.1016/J.OPTMAT.2010.08.026
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摘要: Abstract The photoluminescence and excitation spectra of Pr3+ activated LaPO4 has been investigated in the 1.6–300 K temperature region. At room temperature, luminescence LaPO4:Pr3+ is composed interconfigurational 4f15d1 → 4f2 emission transitions. However, 1.6–60 K range, spectrum also consists intraconfigurational transitions that emanate from 1S0 state. A radiative lifetime 145 ns measured for 1S0 → 1I6 transition LaPO4. This one shortest observed this a solid. energy position state established by high-resolution at 46 375 ± 5 cm−1. detailed analysis thermal quenching intensity presented. It proposed lowest relaxed 4f15d1 configuration situated energetically below
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