photo-, phot-, -photic
(Greek: light; ultraviolet and infrared radiation; radiant energy)
thermophotovoltaic cell (TPV)
A device concentrating sunlight onto a absorber that heats it to a high temperature.
The thermal radiation emitted by the absorber is used as the energy source for a photovoltaic cell that is designed to maximize conversion efficiency at the wavelength of the thermal radiation.
The directed movement or orientation of a motile organism towards the source of a light stimulus.