DataVXACS Energy LettersPaper
journal article·2026-01-09

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

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

ACS Energy Letters· Volume 11· Issue 1
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Source abstract

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 (DMPE 2+ ), which exhibits higher acid dissociation constant and lower deprotonation tendency, was introduced to prepare Dion–Jacobson phase quasi-2D perovskites (DMPE)MA n –1 Pb n I 3 n +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)MA 4 Pb 5 I 16 . The device delivered a power conversion efficiency of 10.41% for solar cells, a detectivity of 2.27 × 10 12 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 N 2 . These findings highlight the potential of phosphorus-based quasi-2D perovskites in high-performance, stable, and multifunctional optoelectronic systems.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · 2D Materials and Applications · Advanced Photocatalysis Techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China

MIIT Key Laboratory of Advanced Display Materials and Devices, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering

Nanjing University of Science and Technology

Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)

Nanjing Tech University

Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device Engineering, School of Physics and Astronomy

Yunnan University

Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi’an 710072, China

Funding

Natural Science Research of Jiangsu Higher Education Institutions of China · Graduate Research and Innovation Projects of Jiangsu Province · Natural Science Foundation of Jiangsu Province · Synergetic Innovation Center for Organic Electronics and Information Displays · Basic Research Program of Jiangsu Province · Nanjing University of Posts and Telecommunications · China Scholarship Council · National Natural Science Foundation of China · Priority Academic Program Development of Jiangsu Higher Education Institutions · Science and Technology Support Program of Jiangsu Province · State Key Laboratory of Organic Electronics and Information Displays

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