Abstract
Tin oxide (SnO2) is widely used in perovskite solar cells (PSCs) as an electron transport layer (ETL) material. Ethanol usually serves as a solvent of ETL but no one discussed the possible influences caused by ethanol. In this work, the effects of ethanol were investigated systematically. It is clear that ethanol treatment (EtOH-SnO2) can remove surface disorder of mesoporous SnO2 and thus enhance the conductivity as well. As a result, the champion PCE of 21.62% is obtained in PSC with EtOH-SnO2 ETL, which is higher than that of control device (20.70%) due to improved film quality. Meanwhile, compared with control PSCs, the stability of the perovskite layer deposited on EtOH-SnO2 ETL is gradually improved both for the light and thermal stability. Therefore, we make clear that the ethanol treatment can improve the quality of mesoporous SnO2 and perovskite films for optoelectronic device.
Original language | English |
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Article number | 101584 |
Journal | Surfaces and Interfaces |
Volume | 28 |
DOIs | |
Publication status | Published - Feb 2022 |
Keywords
- Electron transport layer
- Ethanol treatment
- Perovskite solar cell
- Tin oxide
ASJC Scopus subject areas
- Surfaces, Coatings and Films