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Effect of Pr3+ Doping on the OH Content of Silica Xerogels (1998)

Armellini, C. ; Del Longo, L. ; Ferrari, M. ; [et al.]

Springer

Journal of sol gel science and technology 13 (1998), S. 599-603

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ISSN: 1573-4846

Keywords: silica xerogel ; Pr3+ ; OH contents ; luminescence

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Notes: Abstract Pr2O3-SiO2 xerogels doped with different Pr/Si concentrations were annealed at 900°C for 120 h and then investigated by FTIR, NIR absorption, Raman and luminescence spectroscopies. It is observed that the content of surface silanol groups is lower for higher Pr3+ concentrations. Luminescence measurements indicate that the amount of the residual OH plays an important role in the spectroscopic properties of the Pr3+ ion and in particular the quantum yield of the emission from the 3P0,1 and 1D2 states.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1023/A:1008699412259

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