Photoelectric transducering element

The present invention relates to a photoelectric transducering element, which comprises a solar epitaxial layer, a combination layer and an LED epitaxial layer which are stacked in sequence, wherein the combination layer is provided with a plurality of holes allowing light rays to run through, so that the solar epitaxial layer can absorb ambient light rays to generate electrical energy. The electrical energy can be stored through an external secondary battery, so that the electrical energy can be supplied through the external secondary battery to drive the LED epitaxial layer to generate the light rays when the ambient light rays are not available. Therefore, the photoelectric transducering element can be used as billboards, traffic signs, alarm lamps and the like without considering the problem of power supply when arranged outdoors.