A TiO2 nanotube network electron transport layer for high efficiency perovskite solar cells

Xianfeng Gao; Jianyang Li; Sam Gollon; Ming Qiu; Dongsheng Guan; Xiaoru Guo; Junhong Chen; Chris Yuan

doi:10.1039/C6CP07733A

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A TiO₂ nanotube network electron transport layer for high efficiency perovskite solar cells†

Xianfeng Gao,^ab Jianyang Li,^b Sam Gollon,^b Ming Qiu,^b Dongsheng Guan,^b Xiaoru Guo,

^b Junhong Chen^b and Chris Yuan

*^ab

Author affiliations

* Corresponding authors

^a Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Ohio, USA
E-mail: chris.yuan@case.edu

^b Department of Mechanical Engineering, University of Wisconsin Milwaukee, Wisconsin, USA

Abstract

The electron transport layer (ETL) plays a critical role in high efficiency perovskite solar cells. In this study, an anodic TiO₂ nanotube film was transformed into a TiO₂ nanotube network film, which maintained its advantage as an efficient ETL for perovskite solar cells. Compared with the mesoporous TiO₂ nanoparticle ETL, the TiO₂ nanotube network ETL can increase the efficiency of perovskite solar cells by 26.6%, which is attributed to its superior charge collection property and light trapping ability. The results confirm the importance of optimizing the electron collecting layer and suggest another way to design and fabricate novel perovskite solid state solar cells, potentially by using a TiO₂ nanotube network film as an alternative high efficiency electrode.

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Article information

DOI: https://doi.org/10.1039/C6CP07733A
Article type: Communication
Submitted: 11 Nov 2016
Accepted: 04 Jan 2017
First published: 02 Feb 2017

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Phys. Chem. Chem. Phys., 2017,19, 4956-4961

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A TiO₂ nanotube network electron transport layer for high efficiency perovskite solar cells

X. Gao, J. Li, S. Gollon, M. Qiu, D. Guan, X. Guo, J. Chen and C. Yuan, Phys. Chem. Chem. Phys., 2017, 19, 4956 DOI: 10.1039/C6CP07733A

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