Perovskite solar cells achieve over 25% efficiency and long lifespan simultaneously

A KAIST research team has solved the "solar cell dilemma," in which increasing efficiency shortens lifespan, while extending lifespan lowers efficiency. The team developed a technology to precisely control the internal structure of a surface passivation layer in perovskite solar cells, successfully achieving both high efficiency exceeding 25% and long-term stability at the same time. The study is published in the journal Joule.