Journal article
Flexible inorganic CsPbI3 perovskite nanocrystal-PMMA composite films with enhanced stability in air and water for white light-emitting diodes
Nanotechnology, v 31(22), pp 225602-225602
13 Mar 2020
PMID: 32053812
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Perovskite nanocrystals are a new type of fluorescent material with the advantages of facile preparation process, bright tunable color with high quantum yield. They are ideal candidates for optoelectronic devices such as light-emitting diode (LED) and display. However, for practical applications of iodine-based perovskite nanocrystals, the photostability remains a great challenge because of their sensitivity to environmental factors such as oxygen, humidity etc. In this paper, we improve the photostability of CsPbI3 by introducing the polymethyl methacrylate (PMMA) as a matrix to form flexible perovskite/PMMA composite films. The composite films maintain good photoluminescence quantum yield for 25 d in air and 4 d in water. Furthermore, these films are flexible and can sustain multiple bending and folding while maintaining their photoluminescence properties. This photostability against mechanical deformation allows for the development of flexible devices. As an example, flexible white light-emitting diodes (WLED) were produced with chromaticity coordination (0.31, 0.32), color temperature 6735 K and good stability over time.
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Details
- Title
- Flexible inorganic CsPbI3 perovskite nanocrystal-PMMA composite films with enhanced stability in air and water for white light-emitting diodes
- Creators
- Changsong Chen - Shanghai Second Polytechnic UniversityDan Li - Shanghai Second Polytechnic UniversityYihua Wu - Shanghai Second Polytechnic UniversityCheng Chen - Shanghai Second Polytechnic UniversityZhi-Gang Zhu - Research Center of Resource Recycling Science and Engineering, Shanghai Polytechnic University, Shanghai, 201209, People's Republic of ChinaWan Y Shih - Drexel UniversityWei-Heng Shih - Drexel University
- Publication Details
- Nanotechnology, v 31(22), pp 225602-225602
- Publisher
- IOP Publishing
- Number of pages
- 11
- Grant note
- 51590902; 61471233 / National Natural Science Foundation of China (https://doi.org/10.13039/501100001809)
- 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:000521483000001
- Scopus ID
- 2-s2.0-85082093069
- Other Identifier
- 991019167591104721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied