期刊
CHEMICAL ENGINEERING JOURNAL
卷 358, 期 -, 页码 30-39出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2018.09.149
关键词
CsPbX3; Perovskite quantum dots; Mesoporous MOF-5; Improved stability; Light-emitting diodes
资金
- National Natural Science Funds of China [51672115, 21501080]
- Fundamental Research Funds for the Central Universities [lzujbky-2016-235]
CsPbX3 (X = Cl, Br, and I) perovskite quantum dots (PeQDs) possess outstanding optical properties. However, the poor stability hinders the application of CsPbX3 PeQDs. Here we report a new strategy to enhance the stability of the PeQDs by embedding CsPbX3 PeQDs into the mesostructure zinc-based metal organic framework (MOF-5) crystals. First, the pore structure of MOF-5 crystals is expanded to mesopores by using templating agents cetyltrimethylammonium bromide and 1,3,5-trimethylbenzene. And then, the CsPbX3 /MOF-5 composites are obtained by the physical mixing of CsPbX3 PeQDs with the mesoporous MOF-5 crystals in solution. The mesoporous structured MOF-5 crystals worked as an excellent dispersion medium to endow CsPbX3 PeQDs with improved stability (thermal-stability, photo-stability and long-term stability) and the property against anion exchange. Using CsPbX3 /MOF-5 composites, a warm white LED is obtained with the color temperature of 3607 K and a wide color gamut (124% of National Television Standards Committee). This study proposes a new strategy to improve the stability of PeQDs, which eliminates the obstacles to the applications of PeQDs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据