Hemispherical solar cells produce more electricity. Solar modules installed on facades or outside windows also allow for increased energy generation, albeit their weight is a drawback.
The gossamer thin, translucent perovskite solar cells made by a Singapore research team, however, could generate hundreds of megawatt hours per year on large buildings.
The fineness of the parts was achieved through a process of thermal evaporation. Cells measuring 10, 30 and 60 nanometres recorded efficiencies of 7%, 11% and 12% respectively.
Translucency and targeted light spectrum can be adjusted during evaporation, meaning cells still function in indirect sunlight or murky light. Plans are underway to test long-term durability and standardise the manufacturing process.
Other cells could soon replace batteries in mobile devices.
