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Updated: Mar 8, 2026

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
Published on: March 2, 2021
A TiO2 nanotube network electron transport layer for high efficiency perovskite solar cells
Xianfeng Gao1, Jianyang Li2, Sam Gollon2
1Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Ohio, 44106, USA. chris.yuan@case.edu and Department of Mechanical Engineering, University of Wisconsin Milwaukee, Wisconsin, 53211, 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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