Work

Exploring Charge Transport and Hysteresis Effects in Perovskite Solar Cells Through Dynamic Measurements and Analytical Modeling

Year: 2025

Type: article

Abstract: Perovskite solar cells (PSCs) have emerged as a promising photovoltaic technology, already achieving efficiencies surpassing 26%. However, effects such as hysteresis are commonly observed due to the interplay of ionic and electronic transport occurring over different timescales. In this work, we presented a unified analytical framework for characterizing charge transport and hysteresis in PSCs, validated through experiments on standard n‐i‐p mesoporous devices. Beyond small‐signal impedance spectroscopy, our model also explains the large‐signal response under pulsed and sinusoidal voltage inputs. Sinusoidal I–V analysis combined with the Fourier transform revealed the system's transition from capacitive to inductive‐like response, depending on excitation frequency. Therefore, this work provides not only theoretical insights but also a step‐by‐step methodology. By combining small‐ and large‐signal experiments within a single interpretive framework, our approach offers a physically grounded and experimentally accessible strategy for decoding and managing nonlinear and memory‐driven effects in PSCs.

Source: Solar RRL

DOI: 10.1002/solr.202500562

Authors: Gabriel L. Nogueira, Victor Lopez‐Richard, Luiz A. Meneghetti, Fabian Hartmann, Carlos F. O. Graeff

Institutions: Universidade Estadual Paulista (Unesp), Universidade Federal de São Carlos, University of Würzburg, Complexity, Topology and Dynamics in Quantum Matter

Language: English

Topic: Perovskite Materials and Applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $4,640