NREL Research Boosts Stability of Perovskites, Helps Silicon Solar Cells

A change in chemical composition enabled scientists to boost the longevity and efficiency of a perovskite solar cell developed at the U.S. Department of Energy’s (DOE’s) National Renewable Energy Laboratory (NREL).

Perovskite/silicon tandem solar cells are contenders for the next-generation photovoltaic technology, with the potential to deliver module efficiency gains at minimal cost. Researchers developed a new triple-halide perovskite alloy that enabled increased power conversion efficiency and photo stability. Photo by Dennis Schroeder, NREL

The new formula enabled the solar cell to resist a stability problem that has so far thwarted the commercialization of perovskites. The problem is known as light-induced phase-segregation, which occurs when the alloys that make up the solar cells break down under exposure to continuous light.

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