【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。更多还原

【Abstract】 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.更多还原