@article{98d888d51ab148f9bba7bff20e83451d,
title = "Impact of Electrode Materials on Process Environmental Stability of Efficient Perovskite Solar Cells",
abstract = "For commercializing perovskite solar cells (PSCs), moisture-tolerant materials are required because a moisture-free environment cannot be maintained on an actual production line (large scale). Recently, PSCs with efficiency exceeding 22% have been fabricated using Li-doped mesoporous TiO2 as an electron transport layer (ETL). However, the use of Li can negatively influence device stability during the fabrication process under humid air because of its hydroscopic property. Here, we report a strategy for improving processing stability without sacrificing the power conversion efficiency (PCE) under a humid atmospheric environment by employing a mesoporous BaSnO3 as an ETL. Using the mesoporous BSO ETL, we achieved a certified efficiency of 21.3% and stabilized efficiency of 21.7%. Furthermore, the BSO-based PSCs also exhibited better processing stability than Li-doped TiO2-based PSCs under humid air. We believe that this strategy of introducing BSO into PSCs will accelerate the commercialization of PSCs.",
keywords = "BaSnO, TiO, metal oxides, perovskite solar cells, stability",
author = "Jaehoon Chung and Shin, {Seong Sik} and Geunjin Kim and Jeon, {Nam Joong} and Yang, {Tae Youl} and Noh, {Jun Hong} and Jangwon Seo",
note = "Funding Information: This work was supported by a grant from the Korea Research Institute of Chemical Technology (KRICT), Republic of Korea (KK1802-A01), the Korea Institute of Energy Technology Evaluation and Planning (KETEP), and the Ministry of Trade Industry & Energy (MOTIE) of the Republic of Korea (No. 20163010012470 and 20183010014470). J.C. S.S.S. and J.S. conceived and designed the experiments. J.C. fabricated and characterized the perovskite solar cells. J.C. synthesized the relevant materials. J.C. and S.S.S. analyzed device data, including impedance and dark current. G.K. measured transient photocurrent decay of devices. S.S.S. J.C. and J.S. wrote the paper. All authors discussed the results. J.S. supervised the research. The authors declare no competing interests. Funding Information: This work was supported by a grant from the Korea Research Institute of Chemical Technology (KRICT), Republic of Korea ( KK1802-A01 ), the Korea Institute of Energy Technology Evaluation and Planning (KETEP), and the Ministry of Trade Industry & Energy (MOTIE) of the Republic of Korea (No. 20163010012470 and 20183010014470 ). ",
year = "2019",
month = aug,
day = "21",
doi = "10.1016/j.joule.2019.05.018",
language = "English",
volume = "3",
pages = "1977--1985",
journal = "Joule",
issn = "2542-4351",
publisher = "Cell Press",
number = "8",
}