High‐Efficiency Solar Cell Enabled by MAPbI <sub>3</sub> Perovskite–PbS Nanostructure Stack: A Theoretical Design
This study proposes a perovskite solar cell architecture integrating quantum dots (QDs) to harness additional sub‐bandgap photons. A thin low‐bandgap (1.35 eV) PbS‐QD layer is embedded within a wide‐bandgap (1.6 eV) MAPbI 3 absorber, forming a quantum well (QW) structure. Acting as a broadband multi‐bandgap absorber, this design enables additional absorption of sub‐bandgap photons (1.35–1.6 eV), with carrier transport occurring via thermionic emission across the QW barrier. The standard p–i–n MAPbI 3 device achieved a simulated efficiency of 25.6%, while the QW‐integrated device reached 28.1%. These results highlight the potential of quantum well architectures to advance next‐generation high‐efficiency perovskite photovoltaics.
Authors
- P. Karthikeyan
- R. Thandaiah Prabu (ORCID: https://orcid.org/0000-0002-5727-2977)
- Atul Kumar (ORCID: https://orcid.org/0000-0002-5100-0938)
- M. Benisha
Institutions
- National Institute of Technology Tiruchirappalli (IN)
- Sathyabama Institute of Science and Technology (IN)
- Saveetha University (IN)
- Koneru Lakshmaiah Education Foundation (IN)
Publication Details
- Journal
- physica status solidi (a)
- Published
- 2025-12-17
- DOI
- https://doi.org/10.1002/pssa.202500786
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00