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Photoexcitation of perovskite precursor solution to induce high-valent iodoplumbate species for wide bandgap perovskite solar cells with enhanced photocurrent
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Document Title
Photoexcitation of perovskite precursor solution to induce high-valent iodoplumbate species for wide bandgap perovskite solar cells with enhanced photocurrent
Author
Naikaew A., Krajangsang T., Srathongsian L., Seriwattanachai C., Sakata P., Burimart S., Sanglee K., Khotmungkhun K., Ruankham P., Romphosri S., Limmanee A., Kanjanaboos P.
Affiliations
National Energy Technology Center (ENTEC), National Science and Technology Development Agency, Pathum Thani, 12120, Thailand; School of Materials Science and Innovation, Faculty of Science, Mahidol University, Nakhon Pathom, 73170, Thailand; Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence for Innovation in Chemistry (PERCH-CIC), Ministry of Higher Education, Science, Research and Innovation, Bangkok, 10400, Thailand
Type
Article
Source Title
Scientific Reports
ISSN
20452322
Year
2023
Volume
13
Issue
1
Page
-
Open Access
All Open Access, Gold, Green
Publisher
Nature Research
DOI
10.1038/s41598-023-32468-w
Format
Abstract
Solution-processed organic–inorganic hybrid perovskite solar cells are among the candidates to replace the traditional silicon solar cells due to their excellent power conversion efficiency (PCE). Despite this considerable progress, understanding the properties of the perovskite precursor solution is critical for perovskite solar cells (PSCs) to achieve high performance and reproducibility. However, the exploration of perovskite precursor chemistry and its effects on photovoltaic performances has been limited thus far. Herein, we modified the equilibrium of chemical species inside the precursor solution using different photoenergy and heat pathways to identify the corresponding perovskite film formation. The illuminated perovskite precursors exhibited a higher density of high-valent iodoplumbate species, resulting in the fabricated perovskite films with reduced defect density and uniform distribution. Conclusively, the perovskite solar cells prepared by the photoaged precursor solution had not only improved PCE but also enhanced current density, confirmed by device performance, conductive atomic force microscopy (C-AFM), and external quantum efficiency (EQE). This innovative precursor photoexcitation is a simple and effective physical process for boosting perovskite morphology and current density. © 2023, The Author(s).
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
Funding Sponsor
National Science and Technology Development Agency; Faculty of Science, Mahidol University; Center of Excellence for Innovation in Chemistry; Ministry of Higher Education, Science, Research and Innovation, Thailand
Publication Source
WOS