Copolymer‐templated nickel oxide for high‐efficiency mesoscopic perovskite solar cells in inverted architecture

Sadegh, Faranak; Akin, Seckin; Moghadam, Majid; Keshavarzi, Reza; Mirkhani, Valiollah; Ruiz‐Preciado, Marco A.; Akman, Erdi; Zhang, Hong; Amini, Mina; Tangestaninejad, Shahram; Mohammadpoor‐Baltork, Iraj; Graetzel, Michael; Hagfeldt, Anders; Tress, Wolfgang

doi:10.1002/adfm.202102237

Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-23274

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Copolymer‐templated nickel oxide for high‐efficiency mesoscopic perovskite solar cells in inverted architecture
Authors:	Sadegh, Faranak Akin, Seckin Moghadam, Majid Keshavarzi, Reza Mirkhani, Valiollah Ruiz‐Preciado, Marco A. Akman, Erdi Zhang, Hong Amini, Mina Tangestaninejad, Shahram Mohammadpoor‐Baltork, Iraj Graetzel, Michael Hagfeldt, Anders Tress, Wolfgang
et. al:	No
DOI:	10.1002/adfm.202102237 10.21256/zhaw-23274
Published in:	Advanced Functional Materials
Volume(Issue):	31
Issue:	33
Issue Date:	2021
Publisher / Ed. Institution:	Wiley
ISSN:	1616-301X 1616-3028
Language:	English
Subject (DDC):	620.11: Engineering materials
Abstract:	Despite the outstanding role of mesoscopic structures on the efficiency and stability of perovskite solar cells (PSCs) in the regular (n–i–p) architecture, mesoscopic PSCs in inverted (p–i–n) architecture have rarely been reported. Herein, an efficient and stable mesoscopic NiOx (mp-NiOx) scaffold formed via a simple and low-cost triblock copolymer template-assisted strategy is employed, and this mp-NiOx film is utilized as a hole transport layer (HTL) in PSCs, for the first time. Promisingly, this approach allows the fabrication of homogenous, crack-free, and robust 150 nm thick mp-NiOx HTLs through a facile chemical approach. Such a high-quality templated mp-NiOx structure promotes the growth of the perovskite film yielding better surface coverage and enlarged grains. These desired structural and morphological features effectively translate into improved charge extraction, accelerated charge transportation, and suppressed trap-assisted recombination. Ultimately, a considerable efficiency of 20.2% is achieved with negligible hysteresis which is among the highest efficiencies for mp-NiOx based inverted PSCs so far. Moreover, mesoscopic devices indicate higher long-term stability under ambient conditions compared to planar devices. Overall, these results may set new benchmarks in terms of performance for mesoscopic inverted PSCs employing templated mp-NiOx films as highly efficient, stable, and easy fabricated HTLs.
URI:	https://digitalcollection.zhaw.ch/handle/11475/23274
Fulltext version:	Published version
License (according to publishing contract):	CC BY-NC 4.0: Attribution - Non commercial 4.0 International
Departement:	School of Engineering
Organisational Unit:	Institute of Computational Physics (ICP)
Appears in collections:	Publikationen School of Engineering

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Sadegh, F., Akin, S., Moghadam, M., Keshavarzi, R., Mirkhani, V., Ruiz‐Preciado, M. A., Akman, E., Zhang, H., Amini, M., Tangestaninejad, S., Mohammadpoor‐Baltork, I., Graetzel, M., Hagfeldt, A., & Tress, W. (2021). Copolymer‐templated nickel oxide for high‐efficiency mesoscopic perovskite solar cells in inverted architecture. Advanced Functional Materials, 31(33). https://doi.org/10.1002/adfm.202102237

Sadegh, F. et al. (2021) ‘Copolymer‐templated nickel oxide for high‐efficiency mesoscopic perovskite solar cells in inverted architecture’, Advanced Functional Materials, 31(33). Available at: https://doi.org/10.1002/adfm.202102237.

F. Sadegh et al., “Copolymer‐templated nickel oxide for high‐efficiency mesoscopic perovskite solar cells in inverted architecture,” Advanced Functional Materials, vol. 31, no. 33, 2021, doi: 10.1002/adfm.202102237.

SADEGH, Faranak, Seckin AKIN, Majid MOGHADAM, Reza KESHAVARZI, Valiollah MIRKHANI, Marco A. RUIZ‐PRECIADO, Erdi AKMAN, Hong ZHANG, Mina AMINI, Shahram TANGESTANINEJAD, Iraj MOHAMMADPOOR‐BALTORK, Michael GRAETZEL, Anders HAGFELDT und Wolfgang TRESS, 2021. Copolymer‐templated nickel oxide for high‐efficiency mesoscopic perovskite solar cells in inverted architecture. Advanced Functional Materials. 2021. Bd. 31, Nr. 33. DOI 10.1002/adfm.202102237

Sadegh, Faranak, Seckin Akin, Majid Moghadam, Reza Keshavarzi, Valiollah Mirkhani, Marco A. Ruiz‐Preciado, Erdi Akman, et al. 2021. “Copolymer‐Templated Nickel Oxide for High‐Efficiency Mesoscopic Perovskite Solar Cells in Inverted Architecture.” Advanced Functional Materials 31 (33). https://doi.org/10.1002/adfm.202102237.

Sadegh, Faranak, et al. “Copolymer‐Templated Nickel Oxide for High‐Efficiency Mesoscopic Perovskite Solar Cells in Inverted Architecture.” Advanced Functional Materials, vol. 31, no. 33, 2021, https://doi.org/10.1002/adfm.202102237.