荧光粉
材料科学
发光
复合数
光致发光
猝灭(荧光)
荧光
量子产额
水溶液
碳纤维
化学工程
固态
量子点
纳米技术
光电子学
复合材料
有机化学
物理化学
化学
光学
工程类
物理
作者
Qihui Ding,Shilong Zhong,Yingying Lv,Leshu Yu,Junyan Wang,Siyan Peng,Liusai Yang
出处
期刊:NANO
[World Scientific]
日期:2022-11-30
卷期号:17 (13)
标识
DOI:10.1142/s1793292022501004
摘要
Carbon dots (CDs), as an emerging carbon material, have attracted considerable interest for their promising luminescent properties. However, the inevitable aggregation of CDs in solid-state results in some bottleneck problems such as aggregation-induced quenching and foster resonance energy transfer. Therefore, developing solid-sate CDs with good luminescent performance is still a challenge. Herein, a simple and low-cost approach is presented to prepare the solid-state CDs/SiO 2 composite in which the CDs were well dispersed and embedded in inorganic silica gel, hence restraining the natural issues of the solid-state CDs. As expected, the CDs/SiO 2 composite phosphors showed higher fluorescence intensity about twice than the CDs aqueous solution, and a high photoluminescence quantum yield of 21%. This work would be of significance for the preparation of CDs and even their practical applications.
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