Metal-Free Interconnecting Layer for Monolithic Perovskite/Organic Tandem Solar Cells with Enhanced Outdoor Stability

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Date

2022-11-28

Author

Xu, Han
Merino, Luis Torres
Koc, Mehmet
Aydin, Erkan
Zhumagali, Shynggys
Haque, Md Azimul
Yazmaciyan, Aren
Sharma, Anirudh
Villalva, Diego Rosas
Hernandez, Luis Huerta
De Bastiani, Michele
Babics, Maxime
Isikgor, Furkan H.
De Wolf, Stefaan
Yerci, Selçuk
Troughton, Joel
Baran, Derya

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Photovoltaics with monolithically connected tandem architectures have the potential to achieve high efficiencies owing to enhanced spectral absorption and reduced thermal losses. To achieve this, photoactive layers with complementary absorption and interconnecting layers, which are robust, transparent, and energetically suitable, are essential. Here, we investigate a strategy to create an efficient, highly transparent, ohmic, and chemically robust interconnecting layer based on atomic layer-deposited tin oxide (SnO2) and solution-processed diluted poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), eliminating the need of widely reported parasitically absorbing metal recombination layers. Monolithic perovskite/organic tandem devices built on a metal-free interface (SnO2/PEDOT:PSS) compared to its counterpart (SnO2/metal/PEDOT:PSS) show no significant difference in PCE, but a remarkable enhancement in photostability. Furthermore, tandem solar cells were tested under outdoor conditions for 2 weeks, showing improved stability and solar power conversion than single-junction perovskite and organic devices, underscoring the potential of monolithic tandem solar cells.

Subject Keywords

tandem solar cell, interconnecting layer, photostability, outdoor testing, perovskite tandem, EFFICIENCY, ACCEPTOR, DESIGN, interconnecting layer, outdoor testing, perovskite tandem, photostability, tandem solar cell

URI

https://hdl.handle.net/11511/101784

Journal

ACS APPLIED ENERGY MATERIALS

DOI

https://doi.org/10.1021/acsaem.2c01749

Collections

Department of Physics, Article

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Citation Formats

H. Xu et al., “Metal-Free Interconnecting Layer for Monolithic Perovskite/Organic Tandem Solar Cells with Enhanced Outdoor Stability,” ACS APPLIED ENERGY MATERIALS, vol. 5, no. 11, pp. 14035–14044, 2022, Accessed: 00, 2023. [Online]. Available: https://hdl.handle.net/11511/101784.