Solar cells 20x thinner than hair power long-duration drone flights

Autonomous energy is essential to maintain power systems operating independently for extended periods of time, both on Earth and in space. The need is amplified for missions operating, especially in distant or unpredictable situations.

According to the team, the flexible and ultralight solar cell module, 20 times thinner than a human hair strand, can power various electronics anywhere there is light.With a 20.1 percent efficiency and excellent flexibility, the quasi-2D perovskite solar cells are less than 2.5 micrometers thick. Above all, they stand out from other solar cell technologies thanks to their advanced power density of 44 W/g.

Researchers claim that a two-step approach has significantly enhanced the operational stability of these cells. Initially, a transparent aluminum oxide layer is applied to the thin film, followed by meticulous optimization of the solar cell material.Sleekly incorporated into the drone’s structure, twenty-four of these cells accounted for a mere 1/400 of its overall mass.

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