Issue 40, 2023

Robust electron transport layers of SnO2 for efficient perovskite solar cells: recent advances and perspectives

Abstract

To date, organic–inorganic hybrid perovskite solar cells (PSCs) have achieved certified efficiencies of 26.1%. Electron transport layers (ETLs) are found to be critical for device performance and stability. The most common ETL material is TiO2. However, it suffers from low efficiency for charge extraction at the interface, especially in planar solar cells. SnO2 has similar physical properties to TiO2 and has higher electron mobility, which could improve the charge extraction ability of the interface. In addition, SnO2 has the advantages of low cost, low preparation temperature, and a wide band gap, which makes SnO2 gradually become a stable ETL for high-efficiency PSCs. This article examines the current use of SnO2 as an ETL material in PSCs, covering the preparation procedure and SnO2 performance enhancement technologies. The stability of SnO2-based PSCs is also reviewed as are several scalable process-related preparatory techniques. Finally, we explore the limits of SnO2 as an ETL and make recommendations for further research.

Graphical abstract: Robust electron transport layers of SnO2 for efficient perovskite solar cells: recent advances and perspectives

Article information

Article type
Review Article
Submitted
12 jul 2023
Accepted
15 set 2023
First published
19 set 2023

J. Mater. Chem. C, 2023,11, 13625-13646

Robust electron transport layers of SnO2 for efficient perovskite solar cells: recent advances and perspectives

B. Du, K. He, G. Tian, X. Che and L. Song, J. Mater. Chem. C, 2023, 11, 13625 DOI: 10.1039/D3TC02445H

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