A perovskite solar cell can be printed from a liquid ink and processed below 150 degrees Celsius, cool enough for some plastic substrates, and the resulting film is about 100 times thinner than a human hair yet converts sunlight to electricity at efficiencies now rivalling rigid silicon cells made from crystals grown near 1,414 degrees

Perovskite solar cells self-assemble from a liquid ink at oven temperatures, coat films thinner than a wavelength of light, and — stacked on silicon — have now reached certified efficiencies above 35%, well past what any single silicon cell can achieve. The post A perovskite solar cell can be printed from a liquid ink and processed below 150 degrees Celsius, cool enough for some plastic…