Two‐Dimensional Halide Perovskites in Solar Cells: 2D or not 2D?

Two‐dimensional (2D) halide perovskites have recently emerged as a more stable and more versatile family of materials than three‐dimensional (3D) perovskite solar cell absorbers. Although solar cells made with 2D perovskites have yet to improve their power conversion efficiencies to compete with 3D...

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Bibliographic Details
Published in:ChemSusChem 2019-04, Vol.12 (8), p.1560-1575
Main Authors: Ortiz‐Cervantes, Carmen, Carmona‐Monroy, Paulina, Solis‐Ibarra, Diego
Format: Article
Language:English
Subjects:
2D perovskites
Absorbers
Dimensional stability
Energy conversion efficiency
lead-free
Perovskites
Photovoltaic cells
Solar cells
stability
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Summary:Two‐dimensional (2D) halide perovskites have recently emerged as a more stable and more versatile family of materials than three‐dimensional (3D) perovskite solar cell absorbers. Although solar cells made with 2D perovskites have yet to improve their power conversion efficiencies to compete with 3D perovskite solar cells, their immense diversity offers great opportunities and avenues for research that will likely close the gap between these two. Further, 2D perovskites can have various roles within a solar cell, either as the primary light absorber, as a capping layer, passivating layer, or within a mixed 2D/3D perovskite solar cell absorber. In this Minireview, we will review the history of 2D perovskites in solar cells, the relevant properties of such materials, the different roles that they can play in a solar cell, as well as current trends and challenges. 2D or not 2D? Two‐dimensional perovskites offer improved stability and a more diverse chemistry than three‐dimensional perovskites; yet, they remain vastly unexplored. In this Minireview the basics of 2D perovskites for solar cells, current state‐of‐the‐art, and future avenues of research are explained.
ISSN:1864-5631
1864-564X
DOI:10.1002/cssc.201802992