The merit of perovskite's dimensionality; Can this replace the 3D halide perovskite?

Lioz Etgar*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

197 Scopus citations


This perspective paper focuses on the dimensionality of organic-inorganic halide perovskites and their relevant advantages over 3D perovskites. The charges in two-dimensional (2D) materials are restricted in their movement to the two-dimensional plane; however, their confined structure allows one to tune the optical and electronic properties by varying their thickness. Here we focus on the main advantages of 2D halide perovskites including their enhanced stability; several recent reports discussing this point are summarized. It was observed that 2D perovskites exhibit enhanced moisture resistivity, starting from films to complete solar cells. The power conversion efficiency of photovoltaic solar cells based on 2D- and quasi-2D perovskites (2D + 3D perovskites) as light harvesters has been increasing but still not as much as 3D perovskites. However, their other advantages (e.g., stability, tuning of optical and electronic properties, and the large amount of possible organic cations that can be integrated into their structure) make them a stable alternative for efficient and large-scale module solar cells, which may constitute the next step for commercializing perovskite-based solar cells. To sum up, several strategies for improving the photovoltaic performance of low dimensional perovskites are discussed.

Original languageAmerican English
Pages (from-to)234-242
Number of pages9
JournalEnergy and Environmental Science
Issue number2
StatePublished - Feb 2018

Bibliographical note

Publisher Copyright:
© 2018 The Royal Society of Chemistry.


Dive into the research topics of 'The merit of perovskite's dimensionality; Can this replace the 3D halide perovskite?'. Together they form a unique fingerprint.

Cite this