Author's Accepted Manuscript Energy transfer from Gd 3 þ to Eu 3 þ in silica xerogels Barbara Szpikowska-Sroka, Maria Żądlo, Rozalia Czoik, Lidia Żur, Wojciech A. Pisarski PII: S0022-2313(14)00287-7 DOI: http://dx.doi.org/10.1016/j.jlumin.2014.05.004 Reference: LUMIN12689 To appear in: Journal of Luminescence Received date: 3 February 2014 Revised date: 4 April 2014 Accepted date: 5 May 2014 Cite this article as: Barbara Szpikowska-Sroka, Maria Żądlo, Rozalia Czoik, Lidia Żur, Wojciech A. Pisarski, Energy transfer from Gd 3 þ to Eu 3 þ in silica xerogels, Journal of Luminescence, http://dx.doi.org/10.1016/j.jlumin.2014.05.004 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. www.elsevier.com/locate/jlumin