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Updated: Jun 25, 2025
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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
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Interfacial host-guest complexation for inverted perovskite solar cells
Kevin Ballestas1, Jovana V Milić2, Daniel Ramírez1
1Centro de Investigación, Innovación y Desarrollo de Materiales (CIDEMAT), Faculty of Engineering, Universidad de Antioquia, Calle 70 #52-21, Medellín, Colombia.
The Journal of Chemical Physics
|May 31, 2024
Summary
Host-guest complexation using dibenzo-24-crown-8 enhances stability in inverted perovskite solar cells. This strategy reduces trap states, improving both efficiency and operational longevity for next-generation solar technologies.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Perovskite solar cells (PSCs) show rapid development but suffer from poor operational stability.
- Host-guest complexation is a promising strategy for enhancing PSC stability.
- Its application in inverted p-i-n PSCs remains largely unexplored.
Purpose of the Study:
- To investigate the efficacy of interfacial host-guest complexation in inverted PSCs.
- To explore the use of dibenzo-24-crown-8 for stabilizing perovskite films.
- To assess the impact on device performance and stability under stress conditions.
Main Methods:
- Fabrication of inverted PSCs using methylammonium and formamidinium-cesium halide perovskite compositions.
- Post-treatment of perovskite films with dibenzo-24-crown-8.
- Surface characterization to observe nanostructure formation.
- Performance and stability testing under ISOS-D-2I and ISOS-L-2I protocols.
Main Results:
- Formation of surface nanostructures on perovskite films after treatment.
- Significant reduction in trap states at the perovskite/electron transport layer interface.
- Enhanced power conversion efficiencies (PCEs) in the treated devices.
- Improved operational stability demonstrated through rigorous testing protocols.
Conclusions:
- Interfacial host-guest complexation is a viable strategy for enhancing inverted PSC stability.
- Dibenzo-24-crown-8 effectively passivates trap states and improves device performance.
- This approach offers a promising pathway for developing durable perovskite solar cells.
