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Accepted (AM)Open Access (License Unspecified), Open
Journal article
Cesium lead iodide electrospun fibrous membranes for white light-emitting diodes
Nanotechnology, v 33(38)
10 Jun 2022
PMID: 35688069
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Inorganic perovskite cesium lead iodide nanocrystals (CsPbI3 NCs) are good candidates for optoelectronic devices because of their excellent properties of remarkable luminous performance (high luminous efficiency, narrow luminous spectral line), and high photoelectric conversion efficiency by using simple preparation method. But their inherent poor stability greatly limits its practical applications. In this paper, electrospinning is used to grow fibrous membranes with embedded cesium lead iodide perovskite nanocrystals (PNCs) formed in situ in a one-step process. It was found that cubic -CsPbI3 PNCs were formed in polymer fibers, showing bright and uniform fluorescence signals. Furthermore, the water wetting angles were increased by the fibrous structure enhancing the hydrophobicity thus stability of the fibrous membranes in water. The electrospun fibrous membrane containing CsPbI3 was combined with another membrane containing CsPbBr3 under a blue LED to create a white-light LED in air successfully with CIE coordinates (0.3020, 0.3029), and a correlated color temperature (CCT) of 7527K, indicating high purity of WLED. Our approach provides a new way to create highly stable, photoluminescent water-resistant perovskite nanocrystalline films.
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Details
- Title
- Cesium lead iodide electrospun fibrous membranes for white light-emitting diodes
- Creators
- Qi Wang - Shanghai Polytechnic University, School of Energy and Materials, Shanghai, Shanghai, 201209, CHINAKe Li - Shanghai Polytechnic University, School of Energy and Materials, Shanghai, Shanghai, 201209, CHINAHaohan Yang - Shanghai Polytechnic University, School of Energy and Materials, Shanghai, Shanghai, 201209, CHINADonghai Lin - Shanghai Polytechnic University, Shanghai Engineering Research Center of Advanced Thermal Functional Materials, Research Center of Resource Recycling Science and Engineering, School of Energy and Materials, Shanghai Polytechnic University, Shanghai 201209, China, Shanghai, 201209, CHINAWan Y Shih - Drexel UniversityWei-Heng Shih - Drexel University
- Publication Details
- Nanotechnology, v 33(38)
- Publisher
- Institute of Physics (IOP)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Global Studies and Modern Languages; School of Biomedical Engineering, Science, and Health Systems; Materials Science and Engineering
- Web of Science ID
- WOS:000819743500001
- Scopus ID
- 2-s2.0-85134083222
- Other Identifier
- 991019168078604721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied