退火温度对溶胶-凝胶合成法制备的CdZrS纳米颗粒性能的影响。

Effect of annealing temperatures on the properties of CdZrS nanoparticles prepared by sol-gel synthesis method.

作者信息

Yimamu A U, Adoons V N, Phokojoe R A

机构信息

Department of Physics, University of the Free State, QwaQwa Campus, Phuthaditjhaba, 9866, South Africa.

Department of Physics, Dire Dawa University, Dire Dawa, Ethiopia.

出版信息

Heliyon. 2024 Nov 19;10(23):e40514. doi: 10.1016/j.heliyon.2024.e40514. eCollection 2024 Dec 15.

DOI:10.1016/j.heliyon.2024.e40514

PMID:39654781

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11625278/

Abstract

Cadmium zirconium sulphide (CdZrS) nanoparticles (NPs) were prepared using a sol-gel method. The effect of different annealing temperatures on the structural, morphological, optical, and compositional properties of CdZrS NPs was investigated. The structural investigation revealed that the CdZrS samples exhibit hexagonal and cubic structures in both the as-prepared and annealed samples. The crystallite sizes of CdZrS nanoparticles decreased with increasing annealing temperature. The scanning electron microscopy (SEM) images showed a highly agglomerated particle at 500C. Energy dispersive X-ray spectroscopy (EDS) confirmed the presence of Cd, Zr and S in all samples. UV-Vis analysis confirmed a red shift from 2.61 to 1.62 eV when the annealing temperature was increased. Photoluminescence (PL) emission spectra showed a peak at 462 nm attributed to excitonic recombination of CdZrS and a peak at 557 nm corresponding to interstitial sulfur sites. These materials have potential applications for biosensors or solar cells technology.

摘要

采用溶胶-凝胶法制备了硫化镉锆（CdZrS）纳米颗粒（NPs）。研究了不同退火温度对CdZrS NPs的结构、形态、光学和组成性质的影响。结构研究表明，CdZrS样品在制备态和退火态样品中均呈现六方和立方结构。CdZrS纳米颗粒的微晶尺寸随退火温度的升高而减小。扫描电子显微镜（SEM）图像显示在500℃时颗粒高度团聚。能量色散X射线光谱（EDS）证实所有样品中均存在Cd、Zr和S。紫外-可见分析证实，当退火温度升高时，发生从2.61到1.62 eV的红移。光致发光（PL）发射光谱显示在462 nm处有一个峰，归因于CdZrS的激子复合，在557 nm处有一个峰，对应于间隙硫位点。这些材料在生物传感器或太阳能电池技术方面具有潜在应用。