The photoelectric effect is the emission of electrons or other free carriers when light shines on a material. It is the basis of many technologies, such as solar cells and photodiodes.
The photovoltaic effect is the opposite of the photoelectric effect. It is the generation of electricity when light shines on a semiconductor material. This is the basis of solar panels, which convert sunlight into electricity.
The photoelectric effect and the photovoltaic effect are both based on the interaction of light with matter. However, they have opposite effects. The photoelectric effect is the emission of electrons when light shines on a material, while the photovoltaic effect is the generation of electricity when light shines on a material.
