量子尺寸效应的宏观荧光原位监测实验教学探讨  

Discussion on the Experimental Teaching of Quantum Size Effect by Macroscopic Fluorescence In situ Monitoring

作　　者：尹正茂 孙琼[1] 王莉[1] 石良 于立岩[1] 李桂村[1] 王兆波[1] 杜芳林[1] YIN Zheng-mao;SUN Qiong;WANG Li;SHI Liang;YU Li-yan;LI Gui-cun;WANG Zhao-bo;DU Fang-lin(College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao,Shandong 266042,China)

机构地区：[1]青岛科技大学材料科学与工程学院,山东青岛266042

出　　处：《教育教学论坛》2020年第28期388-390,共3页Education And Teaching Forum

基　　金：2018年度教育部产学合作协同育人项目“新能源材料与器件专业创新实践基地建设”(201802124011);2017年度青岛科技大学本科高水平教学团队项目“新能源材料与器件专业核心课程教学团队”(2017-81-12);2018年度青岛科技大学教学改革研究项目“‘在新旧动能转换’发展战略下新能源材料与器件专业的创新发展”(2018YC02)。

摘　　要：针对量子尺寸效应导致量子点的荧光随粒径不同而变化的现象,设计开发了一套利用荧光原位监测碲化镉量子点生长过程的教学实验系统。该教学实验直观反映了量子尺寸效应导致碲化镉量子点随反应时间延长其粒径长大而荧光光谱发生红移的现象,全时段监测并采集荧光,数据连续准确密集,并设置了数据分析和讨论,完全满足本科研究性实验教学要求。该文对此进行了专题研究。Quantum size effect can generate the phenomenon that the fluorescence of quantum dots varies with different particle sizes. An experimental teaching system is designed and developed to in situ monitor the growth process of CdTe quantum dots by fluorescence. This teaching experiment directly reflects the phenomenon that the quantum size effect lead to the red shift of the fluorescence spectra of CdTe quantum dots as their particle size growing with the extension of the reaction time. Fluorescence spectra have been monitored and collected during the whole process. And the data is continuous and accurate. Besides, data analysis and discussion are set up. The experimental teaching can meet the requirements of undergraduate research experimental teaching.

关 键 词：量子尺寸效应 荧光原位监测 碲化镉量子点 实验教学 

分 类 号：G642[文化科学—高等教育学]