High efficiency planar-type perovskite solar cells with negligible hysteresis using EDTA-complexed SnO2
| dc.contributor.author | Yang, Dong | en |
| dc.contributor.author | Yang, Ruixia | en |
| dc.contributor.author | Wang, Kai | en |
| dc.contributor.author | Wu, Congcong | en |
| dc.contributor.author | Zhu, Xuejie | en |
| dc.contributor.author | Feng, Jiangshan | en |
| dc.contributor.author | Ren, Xiaodong | en |
| dc.contributor.author | Fang, Guojia | en |
| dc.contributor.author | Priya, Shashank | en |
| dc.contributor.author | Liu, Shengzhong (Frank) | en |
| dc.date.accessioned | 2018-09-19T14:49:08Z | en |
| dc.date.available | 2018-09-19T14:49:08Z | en |
| dc.date.issued | 2018-08-13 | en |
| dc.description.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. | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | https://doi.org/10.1038/s41467-018-05760-x | en |
| dc.identifier.uri | http://hdl.handle.net/10919/85048 | en |
| dc.identifier.volume | 9 | en |
| dc.language.iso | en_US | en |
| dc.publisher | Springer Nature | en |
| dc.rights | Creative Commons Attribution 4.0 International | en |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en |
| dc.title | High efficiency planar-type perovskite solar cells with negligible hysteresis using EDTA-complexed SnO2 | en |
| dc.title.serial | Nature Communications | en |
| dc.type | Article - Refereed | en |
| dc.type.dcmitype | Text | en |