Performance evaluation of modified WO3-based electron transport layers against standard TiO2 for perovskite solar cells

IF 3.1 3区化学 Q3 CHEMISTRY, PHYSICAL

Chemical Physics Letters Pub Date : 2025-09-11 DOI:10.1016/j.cplett.2025.142423

Ali Mujtaba , M.I. Khan , Lamia ben Farhat , Badriah S. Almutairi , A. Nazir , Abdullah A.

引用次数: 0

Abstract

This study investigates WO₃-based composite electron transport layers (ETLs) incorporating CeO₂ and In₂O₃ for CsPbIBr₂ perovskite solar cells (PSCs). XRD confirmed mixed-phase systems, with In₂O₃–WO₃ showing higher crystallinity (49.1 nm), lower defect density, and contracted lattice, promoting superior energy alignment. Optical studies revealed a bandgap (2.63 eV), redshifted absorption, and higher refractive index, enhancing light harvesting and charge transport. TiO₂\In₂O₃–WO₃ PSCs achieved improved PCE (11.74 %) compared to TiO₂\CeO₂–WO₃ (10.49 %), due to reduced recombination and better EQE. These results demonstrate In₂O₃–WO₃ as promising ETL modification, with potential for further efficiency gains via interface engineering and stability optimization.

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钙钛矿太阳能电池中改性wo3基电子传输层对标准TiO2的性能评价

这项研究研究了CsPbIBr₂钙钛矿太阳能电池（PSCs）基于WO₃的复合电子传输层（ETLs），其中含有CeO₂和In₂O₃。XRD证实了混合相体系，In₂O₃-WO₃具有较高的结晶度（49.1 nm）、较低的缺陷密度和收缩的晶格，促进了较好的能量排列。光学研究表明，该材料具有2.63 eV的带隙、红移吸收和更高的折射率，增强了光收集和电荷输运。由于减少了重组和更好的EQE，与TiO₂\CeO₂-WO₃（10.49%）相比，TiO₂\In₂O₃-WO₃PSCs实现了更好的PCE（11.74%）。这些结果表明In₂O₃-WO₃是一种有前途的ETL改进型，通过界面工程和稳定性优化具有进一步提高效率的潜力。

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来源期刊

Chemical Physics Letters 化学-物理：原子、分子和化学物理

CiteScore

5.70

自引率

3.60%

发文量

798

审稿时长

33 days

期刊介绍： Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.