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Two-Dimensional Halide Perovskites: Approaches to Improve Optoelectronic Properties
Avija Ajayakumar1,2, Chinnadurai Muthu1,2, Amarjith V Dev1,2
1Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695 019, India.
Chemistry, an Asian Journal
|November 5, 2021
Summary
Two-dimensional (2D) halide perovskites (HPs) offer improved stability over 3D HPs for electronic devices. Strategies are explored to overcome their charge transport limitations for enhanced performance.
Area of Science:
- Materials Science
- Solid-State Chemistry
Background:
- Three-dimensional (3D) halide perovskites (HPs) exhibit promising optoelectronic properties but suffer from instability, hindering commercialization.
- Two-dimensional (2D) HPs offer enhanced stability and tunable properties, making them attractive alternatives.
- The synthesis of 2D HPs is versatile, not limited by the Goldschmidt tolerance factor, allowing for a wide range of organic cations.
Purpose of the Study:
- To review strategies for enhancing charge carrier separation and transport in 2D halide perovskites.
- To address the bottlenecks limiting the device performance of 2D HPs compared to their 3D counterparts.
- To improve the overall optoelectronic properties of 2D perovskites for various applications.
Main Methods:
- Literature review of recent advancements in 2D halide perovskite research.
- Analysis of strategies aimed at improving charge carrier dynamics.
- Discussion of structure-property relationships in 2D HPs.
Main Results:
- 2D HPs demonstrate potential in solar cells, LEDs, transistors, photodetectors, and photocatalysis.
- Key challenges include inefficient charge carrier separation and transport in 2D HPs.
- Various strategies can mitigate these limitations, leading to improved device performance.
Conclusions:
- Addressing charge transport inefficiencies is crucial for unlocking the full potential of 2D HPs.
- Further research into advanced strategies will enhance the optoelectronic properties and device applications of 2D HPs.
- 2D HPs represent a promising class of materials for next-generation optoelectronic devices due to their stability and tunability.
