Issue

Vol. 15 (2023)

A Review on Interface Engineering of MXenes for Perovskite Solar Cells

https://doi.org/10.1007/s40820-023-01083-9
Srikanta Palei
Department of Chemistry, Inha University, 100 Inharo, Incheon 22212, South Korea
G. Murali
Department of Polymer Science and Engineering, Department of IT‑Energy Convergence (BK21 Four), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, South Korea
Choong‑Hee Kim
Department of Chemistry, Inha University, 100 Inharo, Incheon 22212, South Korea
Insik In
Department of Polymer Science and Engineering, Department of IT‑Energy Convergence (BK21 Four), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, South Korea
Seul‑Yi Lee
Department of Chemistry, Inha University, 100 Inharo, Incheon 22212, South Korea
Soo‑Jin Park
Department of Chemistry, Inha University, 100 Inharo, Incheon 22212, South Korea

Corresponding Author: Soo‑Jin Park

sjpark@inha.ac.kr

Nano-Micro Letters, Vol. 15 (2023), Article Number: 123

Abstract

With an excellent power conversion efficiency of 25.7%, closer to the Shockley–Queisser limit, perovskite solar cells (PSCs) have become a strong candidate for a next-generation energy harvester. However, the lack of stability and reliability in PSCs remained challenging for commercialization. Strategies, such as interfacial and structural engineering, have a more critical influence on enhanced performance. MXenes, two-dimensional materials, have emerged as promising materials in solar cell applications due to their metallic electrical conductivity, high carrier mobility, excellent optical transparency, wide tunable work function, and superior mechanical properties. Owing to different choices of transition elements and surface-terminating functional groups, MXenes possess the feature of tuning the work function, which is an essential metric for band energy alignment between the absorber layer and the charge transport layers for charge carrier extraction and collection in PSCs. Furthermore, adopting MXenes to their respective components helps reduce the interfacial recombination resistance and provides smooth charge transfer paths, leading to enhanced conductivity and operational stability of PSCs. This review paper aims to provide an overview of the applications of MXenes as components, classified according to their roles as additives (into the perovskite absorber layer, charge transport layers, and electrodes) and themselves alone or as interfacial layers, and their significant importance in PSCs in terms of device performance and stability. Lastly, we discuss the present research status and future directions toward its use in PSCs.


Highlights:


1 This review discusses the roles of MXenes in different positions/layers in perovskite solar cells.
2 The issues in different layers/interfaces and their addressal with the incorporations of MXenes in perovskite solar cells are elaborately discussed.

Keywords

MXenes Perovskite solar cells Additives Interfacial layer Electrodes
Palei, Srikanta, G. Murali, Choong‑Hee Kim, Insik In, Seul‑Yi Lee, and Soo‑Jin Park. 2023. “A Review on Interface Engineering of MXenes for Perovskite Solar Cells”. Nano-Micro Letters 15 (May):123. https://doi.org/10.1007/s40820-023-01083-9.
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