Synthesis and Size Control of Carbon Quantum Dots by Tailoring Laser Parameters

摘要：

Carbon quantum dots (C-dots) were synthesized by laser irradiation graphite flakes in polymer solution and display size and excitation wavelength dependent photoluminescence (PL) behavior. Our studies show that the size distribution of C-dots can be controlled by tuning laser pulse width and affects fluorescence quantum yield (FQY) of C-dots. FQY of Cdots from 0.4 ms pulse width is above five times higher than that from 2.0 ms pulse width. The possible mechanism of one-step synthesis and size control of C-dots via laser irradiation was also proposed in the present work.

关键词： Carbon quantum dot Fluorescence, Laser ablation Size control

作者: Shengliang Hu Yan Guo Ruixue Tian

作者单位: School of Material Science and Engineering North University of China, Taiyuan 030051, P. R. China

会议类型: 国际会议

会议名称: 2011 International Conference on Electronics and Optoelectronics(2011电子学与光电子学国际会议 ICEOE 2011)

会议地点: 大连

会议语种:英文

页码: 283-285

在线出版日期: 2011-07-29（万方平台首次上网日期，不代表论文的发表时间）