According to Peizhi YANG at Yunnan Normal University, his solar cell based on long-persistent phosphor (LPP) could store sunlight energy in the day and harvest in darkness. All-weather solar cell, comprise a CQD-sensitized mesoscopic titanium dioxide/long-persistence phosphor (m-TiO2/LPP) photoanode, a I–/I3– redox electrolyte, and a platinum counter electrode. In virtue of the light storing and luminescent behaviors of LPPphosphors, the generated all-weather solar cells can not only convert sunlight into electricity on sunny days but persistently realize electricity output in all dark–light conditions. The maximized photoelectric conversion efficiency is as high as 15.1% for so-called all-weather CQD solar cells in dark conditions.

China Bio news release, April 5, 2017