Synthesis of CdS/ZnS core-shell quantum dots in reverse micelle system and its optical property research

LI Jiangsu; CHANG Shuquan; KANG Bin; DAI Yaodong

您当前的位置：

首页 >

文章列表页 >

Synthesis of CdS/ZnS core-shell quantum dots in reverse micelle system and its optical property research

更新时间：2025-12-10

- Synthesis of CdS/ZnS core-shell quantum dots in reverse micelle system and its optical property research
- CIESC Journal Issue 2, Pages: 519-523(2009)
- 作者机构：
  
  南京航空航天大学材料科学与技术学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 February 2009，
  
  Published：05 February 2009
- 稿件说明：
移动端阅览
LI Jiangsu, CHANG Shuquan, KANG Bin, et al. Synthesis of CdS/ZnS core-shell quantum dots in reverse micelle system and its optical property research[J]. CIESC Journal, 2009, (2): 519-523.
DOI：

LI Jiangsu, CHANG Shuquan, KANG Bin, et al. Synthesis of CdS/ZnS core-shell quantum dots in reverse micelle system and its optical property research[J]. CIESC Journal, 2009, (2): 519-523. DOI：

摘要

通过反胶束法成功制备了CdS及CdS/ZnS核壳结构量子点，采用紫外-可见吸收光谱(UV-Vis)、透射电子显微镜(TEM)、能量色散型X射线能谱(EDX)以及荧光光谱(PL)等对其结构和性能进行了研究。与CdS量子点相比，CdS/ZnS量子点的粒径明显变大，本文估算了粒子的粒径，TEM图像很好的印证了估算的结果；结合EDX的测试结果可以推断CdS/ZnS量子点的结构是ZnS包裹在CdS表面的核壳结构；CdS/ZnS量子点的荧光强度与CdS量子点相比有了明显的提高，原因主要是壳层的ZnS消除了CdS量子点表面上存在的无辐射复合中心。

Abstract

CdS and CdS/ZnS quantum dots were synthesized by the microemulsion method in sulfosuccinic acid bis(2-ethylhexyl)ester sodium salt(AOT) surfactant reverse micelles containing water.The products were characterized by UV-Vis spectrometer

transmission electronmicroscopy (TEM)

energy dispersive X-ray spectroscope (EDX)and photoluminescence(PL) spectroscope.The diameter of CdS/ZnS nanoparticle was obvious larger than that of CdS nanoparticle.The diameter of the nanoparticle was estimated

which was confirmed by the images of TEM.The existence of core-shell structure was established by the result of energy dispersive X-ray analysis. PL studies of the samples showed that the luminescence from CdS was enhanced by the ZnS shell.A possible reason was that the ZnS shell reduced the number of defects on the surface of CdS quantum dots

which were assumed to act as centers for radiation-free recombination.

关键词

Keywords

references

Views

198

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effect of ODA content in mixed solvent of ODA and OD on luminescence of CdSe quantum dots

Study on performance enhancement and cold retention characteristics of solid packed bed cold energy storage

Engineering verification and NO emission control of rare earth Y2O3-based catalytic coatings on a metal fiber surface burner

Study on microwave enhanced removal performance of organic matter in coking waste salt

Oxygen mass transfer performance of hollow fiber non-bubble aeration membrane based on gas/liquid-phase measurement method

Related Author

JI Tianhao

LIANG Hui

SUN Jiayue

SUN Baoguo

ZHU Jun

GE Guanglu

Related Institution

北京工商大学化学与环境工程学院

国家纳米科学中心

⁰