%0 Journal Article %T Achieving LongŠ\Term Operational Stability of Perovskite Solar Cells with a Stabilized Efficiency Exceeding 20% after 1000 h %A HeeŠ\Won Shin %A Nam Joong Jeon %A Seong Sik Shin %A TaeŠ\Youl Yang %A Young Yun Kim %J Archive of "Advanced Science". %D 2019 %R 10.1002/advs.201900528 %K iodine migration %K longŠ\term operational stability %K oxygen %K perovskite solar cells %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6661943/