SnO2 : A Wonderful Electron Transport Layer for Perovskite Solar Cells

Qi Jiang; Xingwang Zhang; Jingbi You

doi:10.1002/smll.201801154

SnO₂ : A Wonderful Electron Transport Layer for Perovskite Solar Cells

Small. 2018 Jun 25:e1801154. doi: 10.1002/smll.201801154. Online ahead of print.

Authors

Qi Jiang^{1

2}, Xingwang Zhang^{1

2}, Jingbi You^{1

2}

Affiliations

¹ Key Lab of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P. R. China.
² College of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.

PMID: 29939472
DOI: 10.1002/smll.201801154

Abstract

The highest power conversion efficiency of perovskite solar cells is beyond 22%. Charge transport layers are found to be critical for device performance and stability. A traditional electron transport layer (ETL), such as TiO₂ , is not very efficient for charge extraction at the interface, especially in planar structure. In addition, the devices using TiO₂ suffer from serious degradation under ultraviolet illumination. SnO₂ owns a better band alignment with the perovskite absorption layer and high electron mobility, which is helpful for electron extraction. In this Review, recent progresses in efficient and stable perovskite solar cells using SnO₂ as ETL are summarized.

Keywords: SnO2; electron transport layer; perovskite solar cells.

Publication types

Review