Time-resolved photoluminescence spectroscopy for investigation of semiconductor modern pigments.
Artesani A., Mosca S., Austin N., Valentini G., Comelli D.
We propose a prospective scenario for the application of the time-resolved photoluminescence technique on cultural heritage materials. Illustrative examples of micro-imaging will be provided through the analysis of the stratigraphic corpus from precious modern paintings. A particular attention will be paid to the capability to discriminate between different luminescent painted layers. Further, time-resolved spectroscopy will be proved to be an effective method for the detection of changes induced by material degradation. Remarkable examples will be provided on mock-up and historical samples of zinc white paints in which carboxylates formation has been detected.