High luminescence of CdTe/CdSe/CdS core/shell/shell QDs: synthesis via a simple photochemical approach and gamma dosimetry application

被引：2

作者：

Dehghan, Sima ^{[1
]}

Molaei, Mehdi ^{[1
]}

Alehdaghi, Hassan ^{[2
]}

Karimipour, Masoud ^{[1
]}

机构：

[1] Vali e Asr Univ, Fac Sci, Dept Phys, Rafsanjan, Iran

[2] Hakim Sabzevari Univ, Fac Sci, Dept Phys, Sabzevar, Iran

来源：

JOURNAL OF COORDINATION CHEMISTRY | 2022年 / 75卷 / 5-6期

关键词：

CdTe; CdSe; CdS; high luminescence; gamma irradiation; dosimetry; SHELL QUANTUM DOTS; PHOTOLUMINESCENCE PROPERTIES; OPTICAL-PROPERTIES; CDS NANOCRYSTALS; GREEN SYNTHESIS; CORE; CDTE; GROWTH; ZNSE; NANOPARTICLES;

D O I：

10.1080/00958972.2022.2067988

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this research CdTe/CdSe/CdS core/shell/shell quantum dots (QDs) were synthesized by a photochemical approach using thioglycolic acid as capping agent and S2- source for CdS shell growth. X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform-infrared spectroscopy (FT-IR), and Raman results confirmed formation of CdTe/CdSe/CdS core/shell/shell structure. Photoluminescence (PL) quantum yield (QY) of the CdTe QDs was 23% and 50 and 70% for CdTe/CdSe and CdTe/CdSe/CdS QDs, respectively. Effect of Co-60 gamma irradiation on optical and structural properties of CdTe and CdTe/CdSe/CdS core/shell/shell QDs was investigated. The obtained results indicated stability of crystalline structure of QDs after gamma irradiation but PL intensity of the CdTe/CdSe/CdS QDs decreased gradually after receiving different doses of gamma irradiation with a red shift in PL peak position. The obtained results suggested these luminescence QDs as potential materials for gamma dosimetry.

引用

页码：862 / 872

页数：11

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