材料科学
荧光
拉曼光谱
碳纤维
X射线光电子能谱
化学工程
量子点
结晶度
纳米技术
发光
量子产额
光电子学
复合材料
光学
物理
工程类
复合数
作者
Hui Dang,Li-Kai Huang,Yan Zhang,Cai‐Feng Wang,Su Chen
标识
DOI:10.1021/acs.iecr.6b00894
摘要
We first used oligomer polyamide resin as carbon source to prepare carbon dots (CDs) that can emit white fluorescence via one step ultrasound at room temperature. We have had a further understanding in the surface morphology and chemical characteristics of the CDs by performing TEM, XPS, XRD, FT-IR, and Raman spectroscopy. It has been found that such carbon dots have good dispersion, low crystallinity, rich surface functional groups, and easy large-scale production. The quantum yield of the white fluorescent CDs was further enhanced from 3.3% to 28.3% by adding a silane coupling agent as a co-passivating agent and conducting ultrasonic treatment. We successfully prepared white-light-emitting diodes using these carbon dots as light conversion materials. To further broaden the applications of white fluorescent carbon dots, we employed the as-prepared CD solution as ink to prepare luminescent patterns, along with favorable versatile effect.
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