Lead-Free Perovskite Solar Cells: The Impact of Se–Te–Cu2O as HTL
Syed M. HASNAIN, M. Amin. MIR, Irfan QASIM, Abid IQBAL
Abstract. Using SCAPS-1D, a numerical study on a new perovskite double-absorber solar cell with structure FTO/CdS/RbGeI 3 /MASnI 3 /Se–Te–Cu 2 O/Au is conducted. Most importantly, the Se–Te–Cu 2 O HTL, providing efficient hole extraction and minimizing recombination losses at the back contact, plays a key role. The thickness of the hole transport layer achieved was optimized for low series resistance and high hole mobility. The optimized configuration gave a power conversion efficiency of 33.22%, with V oc of 0.748 V, J sc of 58.42 mA cm -2 , and a fill factor of 76.81%. The Se–Te–Cu 2 O hole transport layer aided charge extraction, good thermal stability from 260–340 K, excellent external quantum efficiency with >95% in the 300–900 nm range. The results show that advanced hole transport layer materials can significantly contribute the development of higher efficiency lead-free perovskite solar cells.
Keywords
Solar Cells, Se–Te–Cu2O, RbGeI3, MASnI3, 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, Lead-Free Perovskite Solar Cells: The Impact of Se–Te–Cu2O as HTL, Materials Research Proceedings, Vol. 64, pp 591-598, 2026
DOI: https://doi.org/10.21741/9781644904091-74
The article was published as article 74 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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