Review on physical impedance models in perovskite solar cells

TL;DR

This review consolidates the understanding of impedance models in perovskite solar cells, highlighting their role in revealing internal mechanisms and emphasizing the need for a centralized data repository to track progress.

Contribution

It provides a comprehensive overview of physical impedance models, including impedance plots and equivalent circuits, to enhance understanding of PSC operation mechanisms.

Findings

Impedance spectroscopy reveals intricate operational details of PSCs.

Consolidation of impedance data aids in understanding PSC mechanisms.

Highlights the need for a centralized database for impedance data.

Abstract

The significant advancements in perovskite solar cell (PSC) research and development have reignited optimism for the practicality of solar energy. A deeper comprehension of the fundamental mechanisms is essential for enhancing the current solar technology. Impedance spectroscopy (IS) characterization, in conjunction with other analytical methods, stands out as the primary approach for gaining insights into the internal workings of solar cells. The continuous analysis and refinement of electrochemical spectroscopy data for PSCs have unveiled intricate operational details. Despite the ongoing improvements, the absence of a centralized repository for this information poses challenges for tracking progress effectively. This review paper aims to consolidate the physical phenomena behind the development of PSC research, aiming to establish a comprehensive knowledge base on impedance plots, equivalent circuits, and related processes.