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Journal of Materials Science

Erschienen in:

12.06.2020 | Energy materials

Performance improvement of perovskite solar cells via spiro-OMeTAD pre-crystallization

verfasst von: Minghan Li, Yanyan Wang, Haoyuan Xu, Houcheng Zhang, Jing Zhang, Yuejin Zhu, Ziyang Hu

Erschienen in: Journal of Materials Science | Ausgabe 26/2020

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Abstract

Meticulous choice of hole transport materials (HTMs) is a crucial factor for carrier extraction and device stability in solar cells. 2,2′,7,7′-tetrakis-(N,N-di-4-methoxyphenylamine)-9,9′-spirobifluorene (spiro-OMeTAD) as a HTM is a milestone in the development of perovskite solar cells (PSCs). Here, the photovoltaic performance of perovskite solar cells (PSCs) was improved by solvent treatment of spiro-OMeTAD film processed from non-benzene solvent (ethyl acetate). This treatment results in the pre-crystallization of spiro-OMeTAD, and thus an increased conductivity of the spiro-OMeTAD film. Via the solvent-treatment time, the highest power conversion efficiency of PSCs is improved to ~ 19%, accompany with the enhancements of short-circuit current, open-circuit voltage, and fill factor. These improvements attribute to the reduced carrier accumulation and decreased serial resistance at the perovskite/spiro-OMeTAD interface. Thermal stability and lifetime of the PSCs based on the pre-crystallization spiro-OMeTAD are also improved. This solvent treatment to adjust the spiro-OMeTAD crystallization offers a facile yet effective way to fabricate high conduction layers toward environmentally friendly PSCs.

Vorheriger Artikel Gel polymer electrolyte with high performances based on polyacrylonitrile composite natural polymer of lignocellulose in lithium ion battery

Nächster Artikel TiO2 coupled to predominantly metallic MoS2 for photocatalytic degradation of rhodamine B

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Titel: Performance improvement of perovskite solar cells via spiro-OMeTAD pre-crystallization
verfasst von: Minghan Li
Yanyan Wang
Haoyuan Xu
Houcheng Zhang
Jing Zhang
Yuejin Zhu
Ziyang Hu
Publikationsdatum: 12.06.2020
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 26/2020
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-020-04896-w

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