Study of neodymium photoluminescence and energy transfer in silicon-based gels

J.C. Pivin (1) , A. Podhorodecki , R. Kudrawiec , J. Misiewicz

1 CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse

This paper reports an investigation of the three $^4F_{3/2}$–$^4I_{n/2}$ emissions of Nd${3+} ions in the red and near infrared in silica gel films containing quantum dots of silicon, with comparison to those in pure silica. Measurements of excitation efficiency at various wavelengths and of PL yields as a function of the Nd concentration show that Nd is more soluble in the substoichiometric oxide obtained from triethoxysilane gels and that the energy of excitons in Si clusters is transferred to G levels of the lanthanide, with an effect of enhancement of the $^4F_{3/2}$–$^4I_{n/2}$ emissions.

Mots clés: Sol–gel; Ion irradiation; Rare earth; Luminescence

Domaines: Science des matériaux [cond-mat.mtrl-sci]

J.C. Pivin, A. Podhorodecki, R. Kudrawiec, J. Misiewicz. Study of neodymium photoluminescence and energy transfer in silicon-based gels. Third International Conference on Sol-Gel Materials: Research, Technology, Applications SGM'04, Jun 2004, Wroclaw, Poland. pp.1467-1470, ⟨10.1016/j.optmat.2005.01.012⟩. ⟨in2p3-00024236⟩