NDLI: TiO<sub>2</sub>/SnO<sub>2</sub> Bilayer Electron Transport Layer for High Efficiency Perovskite Solar Cells.

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TiO₂/SnO₂ Bilayer Electron Transport Layer for High Efficiency Perovskite Solar Cells.

Content Provider	Europe PMC
Author	Sun, Xiaolin Li, Lu Shen, Shanshan Wang, Fang
Editor	Mora-Seró, Iván
Copyright Year	2023
Abstract	The electron transport layer (ETL) has been extensively investigated as one of the important components to construct high-performance perovskite solar cells (PSCs). Among them, inorganic semiconducting metal oxides such as titanium dioxide (TiO2), and tin oxide (SnO2) present great advantages in both fabrication and efficiency. However, the surface defects and uniformity are still concerns for high performance devices. Here, we demonstrated a bilayer ETL architecture PSC in which the ETL is composed of a chemical-bath-deposition-based TiO2 thin layer and a spin-coating-based SnO2 thin layer. Such a bilayer-structure ETL can not only produce a larger grain size of PSCs, but also provide a higher current density and a reduced hysteresis. Compared to the mono-ETL PCSs with a low efficiency of 16.16%, the bilayer ETL device features a higher efficiency of 17.64%, accomplished with an open-circuit voltage of 1.041 V, short-circuit current density of 22.58 mA/cm2, and a filling factor of 75.0%, respectively. These results highlight the unique potential of TiO2/SnO2 combined bilayer ETL architecture, paving a new way to fabricate high-performance and low-hysteresis PSCs.
Journal	Nanomaterials (Basel, Switzerland)
Volume Number	13
PubMed Central reference number	PMC9862634
Issue Number	2
PubMed reference number	36678002
e-ISSN	20794991
DOI	10.3390/nano13020249
Language	English
Publisher	MDPI
Publisher Date	2023-01-06
Access Restriction	Open
Rights License	Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2023 by the authors.
Subject Keyword	perovskite solar cells electron transport layer low hysteresis SnO2 TiO2
Content Type	Text
Resource Type	Article
Subject	Chemical Engineering Materials Science

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TiO2/SnO2 Bilayer Electron Transport Layer for High Efficiency Perovskite Solar Cells.

TiO₂/SnO₂ Bilayer Electron Transport Layer for High Efficiency Perovskite Solar Cells.