Amidinium-Enhanced Charge Dissociation in Homogeneous Quasi-2-Dimensional Perovskite Solar Cells

Quasi-2-dimensional (quasi-2D) perovskite solar cells (PSCs) have attracted much attention due to their superior stability. However, they suffer from inhomogeneous phase distributions and inefficient exciton dissociations, which hinder charge transport and increase energy loss. Herein, a novel chloride-contained aminidium molecule with Lewis-base properties, butyramidinium chloride (BI), was incorporated into quasi-2D PSCs to improve their performance. Chemical interactions between BI and [PbI 6 ] 4− octahedra were identified, which optimized the crystallization of 2D perovskite. The resultant film showed a favorable crystal orientation and a homogenized energy landscape with a reduced fraction of low- n 2D phases. Moreover, temperature-dependent photoluminescence results indicate reduced exciton binding energy and enhanced charge dissociation after adding BI. Consequently, quasi-2D PSCs ( n = 4) with BI demonstrated a 25% increase in efficiency compared to control devices, attributed to the enhancement of the solar cell’s open-circuit voltage ( V OC ) and fill factor. These results underscore the potential of amidinium-based molecules to improve quasi-2D PSC performance.

Authors

Institutions

Publication Details

Journal
Energy Material Advances
Published
2025-01-01
DOI
https://doi.org/10.34133/energymatadv.0187
Citations
4
Primary Topic
Perovskite Materials and Applications
Type
article
Field-Weighted Citation Impact
2.92
Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Amidinium-Enhanced Charge Dissociation in Homogeneous Quasi-2-Dimensional Perovskite Solar Cells

Fan Xu, Shukui Li, Mingran Du, Jin Jing et al.
4 citations
Energy Material Advances
Perovskite Materials and Applications
2.92
article

Amidinium-Enhanced Charge Dissociation in Homogeneous Quasi-2-Dimensional Perovskite Solar Cells

Fan Xu, Shukui Li, Mingran Du, Jin Jing, Ning Zhou, Shuai Chang, О. С. Кулакович, Tinglu Song, Na Liu, Yang Bai, Qi Chen, Lei Chen, Cheng Zhu, Jiahao Shi, Yuhong Jiang
article en
4 citations

Abstract

Quasi-2-dimensional (quasi-2D) perovskite solar cells (PSCs) have attracted much attention due to their superior stability. However, they suffer from inhomogeneous phase distributions and inefficient exciton dissociations, which hinder charge transport and increase energy loss. Herein, a novel chloride-contained aminidium molecule with Lewis-base properties, butyramidinium chloride (BI), was incorporated into quasi-2D PSCs to improve their performance. Chemical interactions between BI and [PbI 6 ] 4− octahedra were identified, which optimized the crystallization of 2D perovskite. The resultant film showed a favorable crystal orientation and a homogenized energy landscape with a reduced fraction of low- n 2D phases. Moreover, temperature-dependent photoluminescence results indicate reduced exciton binding energy and enhanced charge dissociation after adding BI. Consequently, quasi-2D PSCs ( n = 4) with BI demonstrated a 25% increase in efficiency compared to control devices, attributed to the enhancement of the solar cell’s open-circuit voltage ( V OC ) and fill factor. These results underscore the potential of amidinium-based molecules to improve quasi-2D PSC performance.

Energy Material AdvancesVol. 6
Beijing Institute of Technology (CN), University of Electronic Science and Technology of China (CN), National Academy of Sciences of Belarus (BY), Peking University (CN), Ministry of Education (IR), Beijing Research Institute of Mechanical and Electrical Technology (CN), Advanced Technology & Materials (China) (CN), Institute for Advanced Study (DE), Shenzhen Technology University (CN), Ministry of Education and Child Care (CA)
Affordable and clean energy
Openalex Percentile: Top 10%
Perovskite Materials and Applications
2.92
DOIOpen Access PDFOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.