Salt-embedded carbon nanodots as a UV and thermal stable fluorophore for light-emitting diodes
Salt-embedded carbon nanodots as a UV and thermal stable fluorophore for light-emitting diodes
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DOI：
10.1016/j.jlumin.2014.04.002
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发表时间：
2014-10-01
影响因子：
3.6
通讯作者：
Li, Qin
中科院分区：
文献类型：
--
作者：
Kim, Tak H.;Wang, Fu;Li, Qin
研究了在离子盐晶体(如氯化钠、氯化钾、溴化钾)中包埋碳点制备的紫外光和热稳定性光致发光碳点。盐晶包埋基质不干扰硫化镉的强发射，有效保护硫化镉不受环境影响。盐包裹的硫化镉(S-硫化镉)在紫外光和热辐射下的初始发光强度的衰减分别比二氧化硅中的硫化镉慢15倍和6倍。我们还证明了S-硫化镉可以作为典型的GaN紫外光发光二极管(LED)的变色荧光粉，在稳定性和可加工性方面都有显著的改善。(C)2014爱思唯尔B.V.保留所有权利。
UV and thermal stable, photoluminescent carbon dots (CDs) prepared by embedding CDs in ionic salt crystals such as NaCl, KCL, KBr are demonstrated. The salt crystal embedding matrix does not interfere with CDs strong emission, and provides effective protection to CDs from the environment. The degradation of 20% of the initial luminescence intensity of salt-encapsulated CDs (S-CDs) is 15 times slower under UV and 6 times slower under heat compared to that of CDs in silica matrix. We also demonstrate that the S-CDs can be applied as a color-converting phosphor for typical GaN UV light emitting diodes (LEDs) with significant improvements in stability as well as processability. (C) 2014 Elsevier B.V. All rights reserved.