具有强绿光发射的碳点@NaCl 复合荧光粉的制备与应用。
Preparation and application of carbon-nanodot@NaCl composite phosphors with strong green emission.
机构信息
State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China.
State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China.
出版信息
J Colloid Interface Sci. 2017 Jul 1;497:165-171. doi: 10.1016/j.jcis.2017.03.007. Epub 2017 Mar 2.
Luminescent carbon nanodots (CDots) have attracted much attention, but their luminescence is usually quenched in solid state. Efficient green or yellow emissive CDot-based phosphors are scarce. In this work, green emissive CDot@NaCl composite phosphors were fabricated through a convenient, low cost and eco-friendly way by embedding green emissive CDots (g-CDot) in NaCl crystals. With the protection of NaCl host, the g-CDot@NaCl composite phosphors exhibit good photostability, significant resistance to organic solvents, and improved photoluminescence quantum yields up to 25%. White light-emitting diodes with tunable color temperatures (3944-5478K) and CIE coordinates have been realized based on the g-CDot@NaCl composite phosphors.
发蓝色光的碳纳米点（CDots）受到了广泛关注，但它们的发光通常在固态下会被猝灭。高效的绿色或黄色发光的基于 CDot 的荧光粉比较稀缺。在这项工作中，通过一种简便、低成本且环保的方法，将绿色发光的 CDots（g-CDot）嵌入到 NaCl 晶体中，制备了发绿色光的 CDot@NaCl 复合荧光粉。在 NaCl 基质的保护下，g-CDot@NaCl 复合荧光粉表现出良好的光稳定性、对有机溶剂的显著抗性，以及高达 25%的光致发光量子产率的提升。基于 g-CDot@NaCl 复合荧光粉，实现了具有可调色温（3944-5478K）和 CIE 坐标的白色发光二极管。
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