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Efficient Monolithic Perovskite/Perovskite Tandem Solar Cells

Efficient Monolithic Perovskite/Perovskite Tandem Solar Cells Organic–inorganic (hybrid) perovskites are at the forefront of emerging photovoltaic materials, thanks to their fast rising and constantly improving power conversion efficiencies (PCEs), which are now exceeding 22%. While the development of novel absorber materials is likely to further enhance the performances of perovskite solar cells, the use of novel architectures such as tandem cells is a proven successful strategy to overcome the Shockley–Queisser limit of single junction devices. Hybrid perovskites are quite unique, being efficient semiconductors whose bandgap can be readily tuned over a wide range, allowing light absorption from near‐infrared to visible wavelengths. For this reason, they are being investigated as top cells in combination with a variety of narrow bandgap solar cells, in particular with silicon and copper indium gallium selenide. The challenges associated with the advance of perovskite tandem solar cells include the development of charge recombination layers (CRLs) between the two subcells with low ohmic losses and of deposition processes that are compatible with the underline photovoltaic cells. Hence, most of the reported tandem devices consist in mechanically stacked semitransparent cells (4‐terminal cells), while only few recent examples have demonstrated the fabrication of monolithic, 2‐terminal photovoltaic devices. An alternative strategy is the development of http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Energy Materials Wiley

Efficient Monolithic Perovskite/Perovskite Tandem Solar Cells

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References (31)

Publisher
Wiley
Copyright
© 2017 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
1614-6832
eISSN
1614-6840
DOI
10.1002/aenm.201602121
Publisher site
See Article on Publisher Site

Abstract

Organic–inorganic (hybrid) perovskites are at the forefront of emerging photovoltaic materials, thanks to their fast rising and constantly improving power conversion efficiencies (PCEs), which are now exceeding 22%. While the development of novel absorber materials is likely to further enhance the performances of perovskite solar cells, the use of novel architectures such as tandem cells is a proven successful strategy to overcome the Shockley–Queisser limit of single junction devices. Hybrid perovskites are quite unique, being efficient semiconductors whose bandgap can be readily tuned over a wide range, allowing light absorption from near‐infrared to visible wavelengths. For this reason, they are being investigated as top cells in combination with a variety of narrow bandgap solar cells, in particular with silicon and copper indium gallium selenide. The challenges associated with the advance of perovskite tandem solar cells include the development of charge recombination layers (CRLs) between the two subcells with low ohmic losses and of deposition processes that are compatible with the underline photovoltaic cells. Hence, most of the reported tandem devices consist in mechanically stacked semitransparent cells (4‐terminal cells), while only few recent examples have demonstrated the fabrication of monolithic, 2‐terminal photovoltaic devices. An alternative strategy is the development of

Journal

Advanced Energy Materials – Wiley

Published: Apr 1, 2017

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