Researchers have developed a very promising prototype of a new solar celll. The material gallium phosphide enables their solar cell to produce the clean fuel hydrogen gas from liquid water. Processing the gallium phosphide in the form of very small nanowires is novel and helps to boost the yield by a factor of ten. And does so using ten thousand times less precious material.

Source: Nanowires give ‘solar fuel cell’ efficiency a tenfold boost: Researchers make important step towards a solar cell that generates hydrogen