Dion–Jacobson Phase Perovskites with Organophosphorus Spacers for Photovoltaic–Detection–Emission Applications

Although two-dimensional (2D) perovskites theoretically exhibit the longest operational lifetimes among perovskite architectures, their practical stability remains limited, probably by the spontaneous deprotonation of amine-cation ligands into volatile amines. Herein, phosphorus-incorporated organic cation template 1,2-bis(dimethylphosphonium)ethane (DMPE2+), which exhibits higher acid dissociation constant and lower deprotonation tendency, was introduced to prepare Dion–Jacobson phase quasi-2D perovskites (DMPE)MAn–1PbnI3n+1. The DMPE-based perovskites possess a lower formation energy and higher thermal stability, suggesting an enhanced structural rigidity. Interestingly, photovoltaic–detection–emission three-in-one function was realized within a monolithic architecture with n = 5 (DMPE)MA4Pb5I16. The device delivered a power conversion efficiency of 10.41% for solar cells, a detectivity of 2.27 × 1012 Jones for photodetectors, and an electroluminescent quantum efficiency of 2.39% for the light-emitting diode. The device retained 85% of initial efficiency after 3000 h of storage in N2. These findings highlight the potential of phosphorus-based quasi-2D perovskites in high-performance, stable, and multifunctional optoelectronic systems.

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Publication Details

Journal
ACS Energy Letters
Published
2025-12-18
DOI
https://doi.org/10.1021/acsenergylett.5c03510
Primary Topic
Perovskite Materials and Applications
Type
article
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article

Dion–Jacobson Phase Perovskites with Organophosphorus Spacers for Photovoltaic–Detection–Emission Applications

Junmin Xia, Shufen Chen, Jian Xu, Zeyao Han et al.
ACS Energy Letters
Perovskite Materials and Applications
article

Dion–Jacobson Phase Perovskites with Organophosphorus Spacers for Photovoltaic–Detection–Emission Applications

Junmin Xia, Shufen Chen, Jian Xu, Zeyao Han, Yangzhi Ma, Nan Meng, Wei Shen, Bo Cai, Yang Bing, Haibo Zeng, Yuelong Ma, Wei Huang, Jian Wu, Lihui Liu, Juan Song, Jie Qian, Quan Chen, Jinyu Wu, Kun Cao, Yong‐Biao Zhao
article en

Abstract

Although two-dimensional (2D) perovskites theoretically exhibit the longest operational lifetimes among perovskite architectures, their practical stability remains limited, probably by the spontaneous deprotonation of amine-cation ligands into volatile amines. Herein, phosphorus-incorporated organic cation template 1,2-bis(dimethylphosphonium)ethane (DMPE2+), which exhibits higher acid dissociation constant and lower deprotonation tendency, was introduced to prepare Dion–Jacobson phase quasi-2D perovskites (DMPE)MAn–1PbnI3n+1. The DMPE-based perovskites possess a lower formation energy and higher thermal stability, suggesting an enhanced structural rigidity. Interestingly, photovoltaic–detection–emission three-in-one function was realized within a monolithic architecture with n = 5 (DMPE)MA4Pb5I16. The device delivered a power conversion efficiency of 10.41% for solar cells, a detectivity of 2.27 × 1012 Jones for photodetectors, and an electroluminescent quantum efficiency of 2.39% for the light-emitting diode. The device retained 85% of initial efficiency after 3000 h of storage in N2. These findings highlight the potential of phosphorus-based quasi-2D perovskites in high-performance, stable, and multifunctional optoelectronic systems.

ACS Energy LettersVol. 11(1)
Nanjing Tech University (CN), Northwestern Polytechnical University (CN), Yunnan University (CN), Nanjing University of Science and Technology (CN), Nanjing University of Posts and Telecommunications (CN), Division of Materials Science and Engineering (AU), The Synergetic Innovation Center for Advanced Materials (CN), Ministry of Industry and Information Technology (CN)
Openalex Percentile: Top 58%
Perovskite Materials and Applications
DOISourceOpenAlex
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