Journal article
Sodium doped CsPbI3-PMMA composite electrospun fibrous membranes for aqueous photocatalyst and LED
Materials science & engineering. B, Solid-state materials for advanced technology, v 312, 117835
Feb 2025
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
All-inorganic CsPbI3 halide perovskite nanocrystals exhibit excellent photoluminescent properties, but their ambient instability presents a challenge. Adding dopants has been an effective way to improve stability. However, very few work was done for CsPbI3, which is relevant for optoelectronic and photovoltaic applications. Here sodium doped CsPbI3 nanocrystals were precipitated in situ in PMMA polymer matrix at room temperature using an electrospinning technique. It was found that the sodium doping improved the photoluminescence intensity and stability of Na-doped CsPbI3@PMMA electrospun fibrous membranes (EFMs) both in air and in water with an optimal concentration of Na/Pb = 0.75. It is speculated that sodium doping creates a core–shell structure with the sodium passivates the shell while the emission wavelength of the core blue-shifts due to the quantum confinement effect. Furthermore, EFMs can be used as photocatalysts to degrade methylene orange and to create white-LED with CIE of (0.2935, 0.3304) and color temperature of 7227 k.
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Details
- Title
- Sodium doped CsPbI3-PMMA composite electrospun fibrous membranes for aqueous photocatalyst and LED
- Creators
- Haohan Yang - School of Energy and Materials, Shanghai Thermophysical Properties Big Data Professional Technical Service Platform, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, ChinaKe Li - School of Energy and Materials, Shanghai Thermophysical Properties Big Data Professional Technical Service Platform, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, ChinaYuang Ji - School of Energy and Materials, Shanghai Thermophysical Properties Big Data Professional Technical Service Platform, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, ChinaDonghai Lin - School of Energy and Materials, Shanghai Thermophysical Properties Big Data Professional Technical Service Platform, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, ChinaWan Y. Shih - Drexel UniversityWei-Heng Shih - Department of Materials Science and Engineering, Drexel University, USA
- Publication Details
- Materials science & engineering. B, Solid-state materials for advanced technology, v 312, 117835
- Publisher
- Elsevier
- Number of pages
- 8
- Grant note
- Overseas Famous Scholar program of Shanghai City GovernmentProgram for Professor of Special Appointment (Eastern Scholar) at SIHLProject of Shanghai Municipal Science and Technology Commission: 22DZ2291100 Science Fund for Distinguished Young Scholars of Fujian Province: 2019 J06027 Gaoyuan Discipline of Shanghai-Materials Science and Engineering
Wei-Heng Shih thanks the support of the Overseas Famous Scholar program of Shanghai City Government. Donghai Lin thanks the support of Program for Professor of Special Appointment (Eastern Scholar) at SIHL, Project of Shanghai Municipal Science and Technology Commission (22DZ2291100), Science Fund for Distinguished Young Scholars of Fujian Province (2019 J06027) and Gaoyuan Discipline of Shanghai-Materials Science and Engineering.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems; Materials Science and Engineering
- Web of Science ID
- WOS:001366997600001
- Scopus ID
- 2-s2.0-85209906242
- Other Identifier
- 991021963113304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Physics, Condensed Matter