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Porosity Control and Optical Characterization of Luminophore Layers Based on PtOEP

In this paper we propose two methods to fabricate the luminophore layer for an optical oxygen sensor to gain the maximum permeability of oxygen molecules into the sensing layer as well as the optimum quenching mechanism by selecting the appropriate matrix layer and the Oxygen Sensing Probe (OSP). We show the FE-SEM images of the resulting sensing layers that indicate the porosity of the layer. Furthermore, we measure the photoluminescence (PL) emission of the resulting sensing layer in ambient condition and Nitrogen atmosphere, which shows a significant reduction in the PL emission peak intensity that is attributed to the quenching mechanism due to the presence of oxygen in air.