Photodynamic therapy (PDT) is a promising technique for the treatment of skin ulcers infected with multidrug-resistant bacteria because of its ability to prevent the emergence of new multidrug-resistant bacteria. We aim to use portable and disposable organic light-emitting diodes (OLEDs) as a PDT light source for home treatment of infected skin ulcers. OLEDs, as flexible surface light sources, provide uniform and widespread light delivery by adhering to the skin. However, OLEDs emit