Scientists say concavities in perovskite films may improve solar cell stability

Hong Kong University of Science and Technology (HKUST) researchers have gained insights into perovskite microstructure. After removing grain surface concavities in the crystalline grains of perovskite, they fabricated a solar cell with improved efficiency retention under standardized thermal cycling, damp heat, and maximum-power-point tracking tests. Scientists from the School of Engineering of the HKUST have revealed the existence and impact of surface concavities on individual crystal grains of perovskite thin films. They claimed in "Elimination of Grain Surface Concavities for Improved Perovskite ...

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