The Effect of MASnI₃–RbGeI₃ Optical Absorber Layers Thickness on the Electronic Characteristics of PSCs
Syed M. HASNAIN, M. Amin. MIR, Irfan QASIM, Abid IQBAL
Abstract. Recently, PSCs have been in the spotlight of solar material design and solar cell research as an attractive emerging solar photovoltaic technology due to low cost of production and a high power conversion efficiencies. This thesis investigated the performance of a lead-free PSC comprising a dual absorption layer of RbGeI₃ and MASnI₃, using SCAPS-1D simulation software. In the proposed structure, the electron-transport layer (ETL) was based on C₆₀ due to its high mobility characteristics, and ideal energy levels for electron transport, while Cu₂O was used as the hole-transport layer (HTL) as it has high hole mobility, and is also chemically stable. The front and back electrodes were indium doped tin oxide and gold, respectively. The dual-absorption layer of RbGeI₃ and MASnI₃ improved light absorption and the generation of charge carriers, and yielded a respectable PCE of 20.2%. The studied device had an Voc of 0.91 V, a Jsc of 32.7 mA/cm², and a FF of 65.2%. These simulation results imply that dual-absorber architectures provide a positive pathway toward enhanced environmentally stable, and high-performance perovskite solar technologies.
Keywords
Solar cells, MASnI3, RbGeI3, Cu₂O, C60, SCAPS-1D
Published online 4/25/2026, 8 pages
Copyright © 2026 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Syed M. HASNAIN, M. Amin. MIR, Irfan QASIM, Abid IQBAL, The Effect of MASnI₃–RbGeI₃ Optical Absorber Layers Thickness on the Electronic Characteristics of PSCs, Materials Research Proceedings, Vol. 64, pp 607-614, 2026
DOI: https://doi.org/10.21741/9781644904091-76
The article was published as article 76 of the book Energy Futures
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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