物理学报Issue(12)：1-8,8.DOI:10.7498/aps.64.127302
热处理温度对量子点粒度分布的影响∗
Influence of annealing temp erature on the distribution of particle sizes of quantum dots dop ed glass
摘要
Abstract
In order to understand the influence of annealing temperature on PbSe quantum dots doped glass produced by a melt-annealing technique, experiments are carried out to compare the influences of different nucleation durations, crystallization temperatures and time on the particle size, distribution and absorption spectrum. Under the condition of the same nucleation temperatures and different crystallization temperatures, the transmission electron microscope images of all samples show that a certain quantity of PbSe crystals are crystallized in the glass. While the particle sizes and densities are slightly different. The calculated distribution of the particle sizes quantitatively indicates that the particle size will be enlarged with the increase of crystallization temperature and the crystal particle density. The measured absorption spectrum shows that the peak value of absorption spectrum increases gradually with increasing the crystallization temperature. At the same time, the peak value shows a red-shift phenomenon. While under the relatively low crystallization temperature, the infrared absorption peak cannot be obtained in spite that some crystals have grown inside the glass. The absorption spectrum is covered up by the background signals because of the relatively smaller particle size and density. This work will be benefit of producing different size quantum dots with a certain density, and realizing stronger absorption and emission in multiband.关键词
PbSe量子点/粒径/退火温度/吸收光谱Key words
PbSe quantum dots/particle size/annealing temperature/absorption spectrum引用本文复制引用
徐军,陈钢..热处理温度对量子点粒度分布的影响∗[J].物理学报,2015,(12):1-8,8.基金项目
浙江工业大学校基金重点项目(批准号:2013XZ010)和浙江省科技厅项目(批准号：Y200908017)资助的课题.* Supported by the Key Program of the Science Foundation of Zhejiang University of Technology, China (Grant No.2013XZ010) and the Program for the Science and Technology Department of Zhejiang Province, China (Grant No. Y200908017) （批准号:2013XZ010）
