Enhanced Efficiency and Stability of Inverted Perovskite Solar Cells Using Highly Crystalline SnO2 Nanocrystals as the Robust Electron-Transporting Layer

Zonglong Zhu; Yang Bai; Xiao Liu; Chu-Chen Chueh; Shihe Yang; Alex K-Y Jen

doi:10.1002/adma.201600619

Enhanced Efficiency and Stability of Inverted Perovskite Solar Cells Using Highly Crystalline SnO2 Nanocrystals as the Robust Electron-Transporting Layer

Adv Mater. 2016 Aug;28(30):6478-84. doi: 10.1002/adma.201600619. Epub 2016 May 11.

Authors

Zonglong Zhu^{1

2}, Yang Bai³, Xiao Liu^{1

2}, Chu-Chen Chueh¹, Shihe Yang³, Alex K-Y Jen^{1

2}

Affiliations

¹ Department of Materials Science and Engineering, University of Washington, Seattle, WA, 98195, USA.
² Department of Chemistry, University of Washington, Seattle, WA, 98195, USA.
³ Department of Chemistry and Energy Institute, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.

PMID: 27168338
DOI: 10.1002/adma.201600619

Abstract

Highly crystalline SnO2 is demonstrated to serve as a stable and robust electron-transporting layer for high-performance perovskite solar cells. Benefiting from its high crystallinity, the relatively thick SnO2 electron-transporting layer (≈120 nm) provides a respectable electron-transporting property to yield a promising power conversion efficiency (PCE)(18.8%) Over 90% of the initial PCE can be retained after 30 d storage in ambient with ≈70% relative humidity.

Keywords: SnO2 nanocrystals; air stability; electron-transporting layers; perovskite solar cells.