Linked from
The 17 pages that link to Photovoltaics, each with the reason it gives.
SunBroader topic: Photovoltaic cells provide a direct technological use of sunlight.
IrradianceRelated: Irradiance sets the available optical power for a photovoltaic device.
Solar energyRelated: Solar cells use this effect to convert sunlight directly into electricity.
SunlightRelated: Photovoltaic cells turn sunlight directly into electricity.
MicrogenerationRelated: Solar panels are a common way to generate electricity at a building.
Energy sourceRelated: Photovoltaic cells turn sunlight into electricity without a heat-engine stage.