Whether Addition of Phenethylammonium Ion is Always Beneficial to Stability Enhancement of MAPbI3 Perovskite Film?
Source abstract
Abstract
Abstract The recent studies widely believe that the stability of (PEA)2PbI4/MAPbI3 perovskite solar cells (PSCs) can be progressively increased with the addition of phenethylammonium ion (PEA+). Herein, it is reported on the stability variations after the addition of PEA+ into the MAPbI3 film and it is demonstrated that excess PEA+ has negative effect on the stability of (PEA)2PbI4/MAPbI3 perovskite film. X‐ray photoelectron spectroscopy, nuclear magnetic resonance, and X‐ray absorption fine structure spectroscopy are utilized to testify that the excess PEA+ damages the MAPbI3 crystal structure and generates defects due to the strong coordination between NH3+ from PEA+ and I− from [PbI6]4−. This work reveals that the stability of (PEA)2PbI4/MAPbI3 perovskite films is not proportional to the addition of PEA+, which is of interest for the developing of stable 2D/3D PSCs.
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Research context
OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Luminescence and Optical Information Ministry of Education Department of Physics School of Science Beijing Jiaotong University Beijing 100044 China
Funding
Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · International Science and Technology Cooperation Programme · Ministry of Science and Technology of the People's Republic of China · Beijing Jiaotong University
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