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The Effect of α-Fe2O3 and Fe3O4 as Transport Layer on the Photovoltaic Performance of Perovskite-Based Solar Cells

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Abstract:

In this work, iron oxide materials α-Fe2O3 and Fe3O4 were investigated as alternative electron and hole transport layers (ETL and HTL) in planar perovskite solar cells (PSCs). Devices were fabricated with the configuration ITO/α-Fe2O3/PCBM/Perovskite/Fe3O4/PEDOT:PSS/Ag using a spin-coating method. Structural, optical, and electrical properties were characterized by X-ray diffraction (XRD), UV–Vis spectroscopy, and current–voltage (J–V) measurements. XRD confirmed the presence of distinct α-Fe2O3 and Fe3O4 crystalline phases, while UV–Vis analysis revealed enhanced absorption and a reduced optical bandgap of 2.04 eV. Devices incorporating both oxide layers achieved improved charge separation and interfacial contact, leading to a power conversion efficiency (PCE) of 0.83%, nearly 30 times higher than the reference device without oxide layers. These findings highlight α-Fe2O3 and Fe3O4 as promising low-cost, stable transport layers for enhancing the efficiency and sustainability of PSCs.

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Periodical:

Materials Science Forum (Volume 1196)

Pages:

175-182

DOI:

https://doi.org/10.4028/p-INHA0e

Citation:

Cite this paper

Online since:

June 2026

Authors:

Yus Rama Denny*, Tubagus Hafid, Muhammad Iman Santoso, Indrianto Indrianto, Meyhart Bangkit Sitorus, Rocky Alfanz, Jakobus Kariongan, Asan Asan

Keywords:

Crystal Structure, Fe3O4, PEDOT:PSS, Perovskite Solar Cell, Power Conversion Efficiency, α-Fe2O3

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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