{"title":"掺锶氧化锌纳米粒子的结构、光学和电化学特性","authors":"I.S. Karthigayan , D. Gopinath , P.Baby Shalini , L.Bruno Chandrasekar , S.Rafi Ahamed","doi":"10.1016/j.solidstatesciences.2024.107651","DOIUrl":null,"url":null,"abstract":"<div><p>The Sr-doped ZnO nanoparticles have been synthesized by the chemical precipitation method at room temperature. The prepared nanoparticles are annealed at 500 °C for 4 h. The nanoparticles have been characterized using X-ray diffraction (XRD) technique, scanning electron microscope and UV–Vis spectroscopy. The XRD studies reveal the formation of a wurtzite geometry. The crystallite size, dislocation density and strain are examined as a function of Sr-doping concentration. The band gap of the prepared nanoparticles ranges from 3.46 eV to 3.56 eV. The nanoparticles have a higher hole concentration than electron concentration. Supercapacitor cells have been prepared by using synthesized nanoparticle electrodes and it is characterized using cyclic voltammetry (CV) by using KOH as an electrolyte solution. The calculated specific capacitance is high at a high doping concentration of ‘Sr’.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"155 ","pages":"Article 107651"},"PeriodicalIF":3.4000,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Structural, optical and electrochemical properties of Sr-doped ZnO nanoparticles\",\"authors\":\"I.S. Karthigayan , D. Gopinath , P.Baby Shalini , L.Bruno Chandrasekar , S.Rafi Ahamed\",\"doi\":\"10.1016/j.solidstatesciences.2024.107651\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The Sr-doped ZnO nanoparticles have been synthesized by the chemical precipitation method at room temperature. The prepared nanoparticles are annealed at 500 °C for 4 h. The nanoparticles have been characterized using X-ray diffraction (XRD) technique, scanning electron microscope and UV–Vis spectroscopy. The XRD studies reveal the formation of a wurtzite geometry. The crystallite size, dislocation density and strain are examined as a function of Sr-doping concentration. The band gap of the prepared nanoparticles ranges from 3.46 eV to 3.56 eV. The nanoparticles have a higher hole concentration than electron concentration. Supercapacitor cells have been prepared by using synthesized nanoparticle electrodes and it is characterized using cyclic voltammetry (CV) by using KOH as an electrolyte solution. The calculated specific capacitance is high at a high doping concentration of ‘Sr’.</p></div>\",\"PeriodicalId\":432,\"journal\":{\"name\":\"Solid State Sciences\",\"volume\":\"155 \",\"pages\":\"Article 107651\"},\"PeriodicalIF\":3.4000,\"publicationDate\":\"2024-08-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Solid State Sciences\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1293255824002164\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid State Sciences","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1293255824002164","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
摘要
掺锶氧化锌纳米粒子是在室温下通过化学沉淀法合成的。利用 X 射线衍射(XRD)技术、扫描电子显微镜和紫外可见光谱对纳米颗粒进行了表征。X 射线衍射研究表明,纳米粒子形成了渥兹石几何形状。晶体尺寸、位错密度和应变是掺锶浓度的函数。制备的纳米粒子的带隙范围为 3.46 eV 至 3.56 eV。纳米粒子的空穴浓度高于电子浓度。使用合成的纳米粒子电极制备了超级电容器电池,并以 KOH 作为电解质溶液,使用循环伏安法(CV)对其进行了表征。当 "Sr "的掺杂浓度较高时,计算得出的比电容较高。
Structural, optical and electrochemical properties of Sr-doped ZnO nanoparticles
The Sr-doped ZnO nanoparticles have been synthesized by the chemical precipitation method at room temperature. The prepared nanoparticles are annealed at 500 °C for 4 h. The nanoparticles have been characterized using X-ray diffraction (XRD) technique, scanning electron microscope and UV–Vis spectroscopy. The XRD studies reveal the formation of a wurtzite geometry. The crystallite size, dislocation density and strain are examined as a function of Sr-doping concentration. The band gap of the prepared nanoparticles ranges from 3.46 eV to 3.56 eV. The nanoparticles have a higher hole concentration than electron concentration. Supercapacitor cells have been prepared by using synthesized nanoparticle electrodes and it is characterized using cyclic voltammetry (CV) by using KOH as an electrolyte solution. The calculated specific capacitance is high at a high doping concentration of ‘Sr’.
期刊介绍:
Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments.
Key topics for stand-alone papers and special issues:
-Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials
-Physical properties, emphasizing but not limited to the electrical, magnetical and optical features
-Materials related to information technology and energy and environmental sciences.
The journal publishes feature articles from experts in the field upon invitation.
Solid State Sciences - your gateway to energy-related materials.