摘要
CdSe量子棒是一种具有良好光学特性的半导体纳米材料,不同长径比的量子棒可应用于光电材料及器件制备。采用高温油相合成法制备CdSe量子棒,在只改变前体反应时间的前提下,探究其对于CdSe量子棒长径比的变化机理并对其光学特性进行对比分析。实验结果表明CdSe量子棒随着反应时间的增长粒径增大并且发射峰的峰位产生了红移的现象。通过透射电子显微镜表征后发现量子棒随着前体反应时间的增加长度逐渐变长,长径比逐渐变大。因此可以用该方法可以控制量子棒的生长。
Cadmium selenide(CdSe) quantum rods are semiconductor nanomaterials with good optical properties. Quantum rods with different aspect ratios can be applied to optoelectronic materials and device fabrication. The CdSe quantum rods were prepared by high temperature oil phase synthesis. Under the premise of changing the reaction time of the precursors, the change mechanism of the length-diameter ratio of CdSe quantum rods was investigated and the optical properties were compared. The results show that the particle size of CdSe quantum rod increases with the increase of reaction time and the peak position of the emission peak produces a red shift phenomenon. After characterization by transmission electron microscopy, it was found that the quantum rod gradually became longer as the reaction time of the precursor increased, and the aspect ratio gradually became larger. Therefore, the growth of the quantum rod can be controlled by this method.
作者
冯可
王玥
李金华
楚学影
胡思怡
林志远
FENG Ke;WANG Yue;LI Jinhua;CHU Xueying;HU Siyi;LIN Zhiyuan(College of Science, Changchun University of Science and Technology, Changchun 130022, Jilin, China;Medical Diagnostics Department, Suzhou Institute of Biomedical Engineering and Technology, CAS, Suzhou 215163, Jiangsu, China)
出处
《化工学报》
EI
CAS
CSCD
北大核心
2019年第7期2795-2801,共7页
CIESC Journal
基金
教育部“111”创新引智项目(D17017)
国家自然科学基金项目(21703017,11604024)
武器装备预研基金重点项目(6140414020102)
吉林省科技发展计划项目(20180519017JH)
吉林省国际科技合作项目(20190701029GH)
吉林省教育厅项目(JJKH20190551KJ,JJKH20170611KJ,JJKH20181101KJ,JJKH20181106KJ)
长春理工大学科技创新基金项目(XQNJJ-2016-14)
关键词
量子棒
纳米材料
纳米粒子
长径比
前体反应时间
吸收
quantum rods
nanomaterials
nanoparticles
aspect ratio
precursor reaction time
absorption
