<human>: How does a solar panel convert sunlight into electricity?
<bot>: A solar panel is made up of several layers. The top layer is the photovoltaic (PV) cells, which absorb light and convert it into electrical energy. The next layer is the backsheet, which protects the PV cells from environmental damage. The middle layer is the encapsulant, which seals the PV cells in place. Finally, there is the frame, which holds everything together and provides structural support.