{"id":"doi:10.1038/s41467-018-05760-x","kind":"article","title":"High efficiency planar-type perovskite solar cells with negligible hysteresis using EDTA-complexed SnO2","authors":["Dong Fang Yang","Ruixia Yang","Kai Wang","Congcong Wu","Xuejie Zhu","Jiangshan Feng","Xiaodong Ren","Guojia Fang","Shashank Priya","Shengzhong Frank Liu"],"author_count":10,"year":2018,"published":"2018-08-07","venue":"Nature Communications","cited_by":1401,"doi":"10.1038/s41467-018-05760-x","arxiv_id":null,"nct_id":null,"source_url":"https://doi.org/10.1038/s41467-018-05760-x","archive_url":"https://space-kitty.com/papers/doi:10.1038/s41467-018-05760-x","updated":null,"pmid":"30104663","pmcid":null,"openalex_id":"W2885088646","pdf_url":"https://www.nature.com/articles/s41467-018-05760-x.pdf","abstract":"Abstract Even though the mesoporous-type perovskite solar cell (PSC) is known for high efficiency, its planar-type counterpart exhibits lower efficiency and hysteretic response. Herein, we report success in suppressing hysteresis and record efficiency for planar-type devices using EDTA-complexed tin oxide (SnO2) electron-transport layer. The Fermi level of EDTA-complexed SnO2 is better matched with the conduction band of perovskite, leading to high open-circuit voltage. Its electron mobility is about three times larger than that of the SnO2. The record power conversion efficiency of planar-type PSCs with EDTA-complexed SnO2 increases to 21.60% (certified at 21.52% by Newport) with negligible hysteresis. Meanwhile, the low-temperature processed EDTA-complexed SnO2 enables 18.28% efficiency for a flexible device. Moreover, the unsealed PSCs with EDTA-complexed SnO2 degrade only by 8% exposed in an ambient atmosphere after 2880 h, and only by 14% after 120 h under irradiation at 100 mW cm−2.","abstract_license":"CC-BY (publisher license, via OpenAlex)","license":"cc-by","is_open_access":true,"retracted":false,"peer_reviewed":null,"categories":["Perovskite Materials and Applications"],"details":null,"provenance":"openalex","attribution":"Abstract of \"High efficiency planar-type perovskite solar cells with negligible hysteresis using EDTA-complexed SnO2\" by Dong Fang Yang, Ruixia Yang, Kai Wang et al., https://doi.org/10.1038/s41467-018-05760-x, used under its Creative Commons Attribution license (CC-BY); markup removed, otherwise unmodified.","topics":[{"slug":"advanced-photovoltaics","name":"Perovskite & Tandem Photovoltaics","domain_slug":"energy"}],"cited_in_dossiers":[]}