title: Material and Device Stability in Perovskite Solar Cells.
abstract: Organic-inorganic halide perovskite solar cells have attracted great attention because of their superb efficiency reaching 22 % and low-cost, facile fabrication processing. Nevertheless, stability issues in perovskite solar cells seem to block further advancements toward commercialization. Thus, device stability is one of the important topics in perovskite solar cell research. In the beginning, the poor moisture resistivity of the perovskite layer was considered as a main problem that hindered further development of perovskite solar cells, which encouraged engineering of the perovskite or protection of the perovskite by a buffer layer. Soon after, other parameters affecting long-term stability were sequentially found and various attempts have been made to enhance intrinsic and extrinsic stability. Here we review the recent progresses addressing stability issues in perovskite solar cells. In this report, we investigated factors affecting stability from material and device points of view. To gain a better understanding of the stability of the bulk perovskite material, decomposition mechanisms were investigated in relation to moisture, photons, and heat. Stability of full device should also be carefully examined because its stability is dependent not only on bulk perovskite but also on the interfaces and selective contacts. In addition, ion migration and current-voltage hysteresis were found to be closely related to stability.
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
authors.forename: Hui-Seon
authors.initials: HS
authors.lastname: Kim
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
authors.forename: Ja-Young
authors.initials: JY
authors.lastname: Seo
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea. npark@skku.edu.
authors.forename: Nam-Gyu
authors.initials: NG
authors.lastname: Park
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D004355:Drug Stability; D011211:Electric Power Supplies; D004738:Engineering; D010087:Oxides / Q000737:chemistry*; D012993:Solar Energy; D014025:Titanium / Q000737:chemistry*
chemical_list: D017610:Calcium Compounds; D010087:Oxides; C059910:perovskite; D014025:Titanium
keywords: ion migration; perovskite; selective contacts; solar cells; stability