Electronic correlations enhance optical absorption in graphene oxide-modified methylammonium lead iodide perovskite

Widianto, Eri and Shobih, Shobih and Nursam, Natalita Maulan and Hanna, Muhammad Yusrul and Kuwat, Triyana and Rusydi, Andrivo and Santoso, Iman (2023) Electronic correlations enhance optical absorption in graphene oxide-modified methylammonium lead iodide perovskite. Journal of Alloys and Compounds, 947: 169634. ISSN 9258388

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Abstract

We reveal unusual optical changes accompanied by spectral weight transfer analysis in methylammonium lead iodide (MAPbI3) as a function small fraction of graphene oxide (GO) concentrations using spectroscopic ellipsometry. Interestingly, we observe the tuneable optical properties of MAPbI3 due to the electronic correlation effect induced by GO using spectral weight transfer analysis. The increase of absorption in the MAPbI3 layer indicates a decrease in the number of holes due to the migration of these holes to the GO layer, suggesting the hole transport properties of GO. This work is the first to study the optical properties of GO combined with MAPbI3, which provides critical information that will be of great interest in the future development of high-performance PSCs, as well as how they reconcile several experimental studies that have demonstrated the positive impact of GO on charge extraction

Item Type: Article
Uncontrolled Keywords: Electronic correlation; Graphene oxide; Optical conductivity; Perovskite
Subjects: Q Science > QC Physics
Divisions: Faculty of Mathematics and Natural Sciences > Physics Department
Depositing User: Wiyarsih Wiyarsih
Date Deposited: 15 Aug 2024 05:32
Last Modified: 15 Aug 2024 05:32
URI: https://ir.lib.ugm.ac.id/id/eprint/3378

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