西北师范大学学报（自然科学版）2017，Vol.53Issue(5)：34-40,7.DOI:10.16783/j.cnki.nwnuz.2017.05.007
具有双重荧光发射的碳量子点的制备及其荧光起源探讨
Preparation of carbon quantum dots with dual emissionand their fluorescence origin
摘要
Abstract
Three kinds of carbon quantum dots(CQDs) are prepared by refluxing activated carbon in HNO3 with different concentration.The photoluminescence(PL) spectra of the CQDs shows obvious dual emission structure,that is,the blue emission does not move with the change of the excitation wavelength,but the long wavelength emission moves obviously.According to the micro structure of active carbon,the formation mechanism of CQDs is presented.Then,through detailed morphology and spectroscopy characterization,the origins of the blue emission and the long wavelength emission are analyzed.关键词
碳量子点/光致发光/量子限制效应/拓扑缺陷Key words
carbon quantum dot/photoluminescence(PL)/quantum confinement effect/topological defect分类
数理科学引用本文复制引用
郝艳玲,张星..具有双重荧光发射的碳量子点的制备及其荧光起源探讨[J].西北师范大学学报（自然科学版）,2017,53(5):34-40,7.基金项目
贵州省教育厅自然科学研究项目(黔教合KY字[2013]192) （黔教合KY字[2013]192）
贵州省科学技术基金资助项目(黔科合LH字[2014]7407) （黔科合LH字[2014]7407）
