NREL scientists turned to quantum dots to remove the unstable organic component and open the door to high- efficiency quantum dot optoelectronics that can be used in LED lights and solar photovoltaics.
In recent years, perovskite solar cells have raced to the front of emerging photovoltaics, already competing on efficiency against well-established solar technologies.
The research, funded by the U.S. Department of Energy SunShot Initiative, involved hybrid halide perovskite solar cells and revealed treating them with a specific solution of methyl ammonium bromide (MABr) would repair defects, improving efficiency.
Perovskite solar cells are the rising star in the photovoltaic landscape. Since their invention, less than ten years ago, their efficiency has doubled twice and it is now over 22%.
Perovskite compounds commonly are comprised of a hybrid organic-inorganic lead or tin halide-based material and have been pursued as potential materials for solar cells for several years.
It turns out that the first perovskite solar cells were dye-sensitized cells where the dye was replaced by small perovskite particles.