Solar electric propulsion
Solar electric propulsion typically refers to the combination of solar cells and ion drive for propelling a spacecraft through outer space. This technology has been studied by NASA and is considered promising.
The main concept is a nexus of Solar panels on spacecraft and ion thruster. However, there is a number of other Electrically powered spacecraft propulsion such as the Arcjet (It may not imply an ion drive, of which there is a variety of types also.)
It is also possible to generate electricity from the Sun without using photovoltaic panels, such as with solar concentrators and a Stirling engine.