UV Modulated Photoluminescence of Ce Doped ZnO Nanoparticles for Photocatalytic and White Light Emitting Diode Applications

IF 1.4 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Iranian Journal of Science and Technology, Transactions A: Science Pub Date : 2025-04-01 DOI:10.1007/s40995-025-01809-x

N. Lavanya, N. K. Deepak

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Abstract

This work investigates the effect of Ce doping in ZnO by sol–gel combustion method on its photocatalytic activity and optoelectronic application. XRD, TEM analysis confirmed the wurtzite hexagonal structure of ZnO. EDX analysis depicted the presence of Ce in addition to Zn and O. UV–Vis studies revealed a decrement in energy band gap on introduction of Ce. PL data analysis showed the existence of various defects which upgrades enhancement of visible emission via activation through diverse wavelengths. The photocatalytic activity of the synthesized nanoparticles was studied by evaluating the degradation of methylene blue (MB) under solar and methyl orange (MO) under xenon light irradiation. Zn_0.99Ce_0.01O showed an efficiency of 96.9% under solar irradiation compared to 41.5% using a light source for the same duration of exposure. Hence sunlight could be considered as the best light source for the elimination of dyes from the water sources in the environment. Moreover, the CIE coordinates of Zn_0.97Ce_0.03O were obtained to be (0.36, 0.38) with CCT of 4574 K at 325 nm which shows warm white light validating its application in household optoelectronic devices.

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Ce掺杂ZnO纳米粒子在光催化和白光发光二极管中的紫外调制发光研究

本文研究了溶胶-凝胶燃烧法在ZnO中掺杂Ce对其光催化活性和光电应用的影响。XRD、TEM分析证实ZnO为纤锌矿六方结构。EDX分析表明，除了Zn和o外，还存在Ce。UV-Vis研究表明，Ce的引入使能带隙减小。PL数据分析表明，存在各种缺陷，通过不同波长的激活提高了可见光发射的增强。通过对合成的纳米粒子在日光下降解亚甲基蓝（MB）和氙光照射下降解甲基橙（MO）的光催化活性进行研究。zn0.99 ce0.010在太阳照射下的效率为96.9%，而在相同曝光时间下使用光源的效率为41.5%。因此，阳光可以被认为是消除环境中水源中染料的最佳光源。zn0.97 ce0.030的CIE坐标为（0.36,0.38），CCT为4574 K，在325 nm处显示出暖白光，验证了其在家用光电器件中的应用。

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来源期刊

Iranian Journal of Science and Technology, Transactions A: Science MULTIDISCIPLINARY SCIENCES-

CiteScore

4.00

自引率

5.90%

发文量

122

审稿时长

>12 weeks

期刊介绍： The aim of this journal is to foster the growth of scientific research among Iranian scientists and to provide a medium which brings the fruits of their research to the attention of the world’s scientific community. The journal publishes original research findings – which may be theoretical, experimental or both - reviews, techniques, and comments spanning all subjects in the field of basic sciences, including Physics, Chemistry, Mathematics, Statistics, Biology and Earth Sciences