Characterisation of medieval yellow silver stained glass from Convento de Cristo in Tomar, Portugal

Joana M. Delgado, Márcia Gomes Vilarigues, Andreia Filipa Cardoso Ruivo, Victoria Corregidor, Raquel da Silva, Luís Cerqueira Alves

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Yellow decoration effects in stained glasses using silver staining were first applied in the beginning of the 14th century. The glass piece being decorated was usually painted on its side intended to be facing the exterior environment, and then fired to temperatures between 500 and 650 degrees C, resulting in colours ranging from pale lemon to deep orange. Stained glass fragments painted by this process and belonging to the Convento de Cristo, in Tomar, Portugal, were characterised using micro-PIXE, and complemented with other analytical techniques, namely UV-Vis spectroscopy and XRF. Preliminary analysis showed that a mixture of Ag and Cu was used for the production of the yellow staining. In order to understand this staining process and the influence of the firing temperature on the resulting colours, several soda and potash glasses with compositions similar to those of medieval glasses were produced and characterised. The role played by the addition of Cu in the final colours was also investigated.
Original languageEnglish
Pages (from-to)2383-2388
Number of pages6
JournalNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Issue number20
Publication statusPublished - 15 Oct 2011


  • Silver stained glass
  • UV-Vis
  • Colloids
  • Convento de Cristo
  • Ion microprobe
  • Nanoparticles


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