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| 高分子聚合物封装对(PEA)2PbI4荧光稳定性的改善 |
| Research on improving the photoluminescence stability of (PEA)2PbI4 by macromolecular polymer encapsulation |
| 投稿时间：2021-03-10 |
| DOI：10.3969/j.issn.1005-5630.2021.05.011 |
| 中文关键词: 二维钙钛矿 高分子聚合物 封装 荧光稳定性 |
| 英文关键词:two-dimensional perovskite high molecular polymers encapsulation photoluminescence stability |
| 基金项目:上海市自然科学基金（20ZR437400） |
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| 中文摘要: |
| 采用聚苯乙烯（PS）、聚甲基丙烯酸甲酯（PMMA）、环烯烃聚合体（COP）三种高分子聚合物封装技术改善二维钙钛矿（(PEA)2PbI4）薄膜荧光的稳定性。将液相合成获得的二维钙钛矿用PS、PMMA、COP三种高分子聚合物进行封装，研究结果表明，三者分别对二维钙钛矿实现3倍、4倍与8倍的稳定性改善，有效地减弱了光照引发的晶格畸变，降低了有机分子的扩散与挥发，从而减缓了二维钙钛矿的降解。该方法简单、成本低，是一种改善二维钙钛矿荧光稳定性的有效方法。 |
| 英文摘要: |
| In this paper, the optical stability of two-dimensional perovskite (PEA) 2PbI4 film was improved by three polymer packaging technologies: polystyrene (PS), polymethyl methacrylate (PMMA), and cycloolefin polymer (COP). It's shown that the photoluminescence stability improvement of (PEA) 2PbI4 by PS, PMMA and COP is 3 times, 4 times and 8 times respectively. Because they can reduce the light-induced lattice distortion, the diffusion and volatilization of organic molecules is slowed down, and thus the degradation of two-dimensional perovskite is relieved. The best performance of COP may be originate from its lower oxygen and water-vapor permeability, and lower water absorption, which can enhance the improvement effect. This paper provides a simple, low cost and obvious improvement method for the application of two-dimensional perovskite. |
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