{"title":"光电用TiO2/WO3/Co3O4/聚乙烯醇（PVA）复合材料的光学和介电性能","authors":"Fwzah H. Alshammari","doi":"10.1007/s10854-025-14216-0","DOIUrl":null,"url":null,"abstract":"<div><p>Polymeric composites based on PVA doped with TiO<sub>2</sub>, WO<sub>3</sub>, and Co<sub>3</sub>O<sub>4</sub> are the subject of the study. A range of physicochemical techniques was used to examine the structure of PVA-based composites. A changing absorption edge for PVA is also seen in the optical studies; it begins at 3.8 eV and drops to 2.4 eV for the PVA-TiO<sub>2</sub>-WO<sub>3</sub> combination. Furthermore, the indirect band gap for all composites doped with TiO<sub>2</sub>, WO<sub>3</sub>, and Co<sub>3</sub>O<sub>4</sub> lowers, reaching 2.8 eV in the PVA-TiO<sub>2</sub>-WO<sub>3</sub> composite. Pure PVA has the greatest value (5.7 eV). The refractive index, on the other hand, shows 1.67 in PVA and 2.08 in PVA-TiO<sub>2</sub>-WO<sub>3</sub> composite. Additionally, the dielectric constant decreased from roughly 28 for PVA and PVA-TiO<sub>2</sub>-WO<sub>3</sub>- Co<sub>3</sub>O<sub>4</sub> composite to less than 20 in PVA-TiO<sub>2</sub>-WO<sub>3</sub>, but increased to ~ 45 in PVA-TiO<sub>2</sub> composite. PVA composites exhibited distinct behavior consistent with previous research, according to optical and dielectric measurements. As a result, the studied NCs offer a potentially helpful composition for optoelectronic applications.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 2","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Optical and dielectric properties of TiO2/WO3/Co3O4/polyvinyl alcohol (PVA) composites for optoelectronic utilizations\",\"authors\":\"Fwzah H. Alshammari\",\"doi\":\"10.1007/s10854-025-14216-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Polymeric composites based on PVA doped with TiO<sub>2</sub>, WO<sub>3</sub>, and Co<sub>3</sub>O<sub>4</sub> are the subject of the study. A range of physicochemical techniques was used to examine the structure of PVA-based composites. A changing absorption edge for PVA is also seen in the optical studies; it begins at 3.8 eV and drops to 2.4 eV for the PVA-TiO<sub>2</sub>-WO<sub>3</sub> combination. Furthermore, the indirect band gap for all composites doped with TiO<sub>2</sub>, WO<sub>3</sub>, and Co<sub>3</sub>O<sub>4</sub> lowers, reaching 2.8 eV in the PVA-TiO<sub>2</sub>-WO<sub>3</sub> composite. Pure PVA has the greatest value (5.7 eV). The refractive index, on the other hand, shows 1.67 in PVA and 2.08 in PVA-TiO<sub>2</sub>-WO<sub>3</sub> composite. Additionally, the dielectric constant decreased from roughly 28 for PVA and PVA-TiO<sub>2</sub>-WO<sub>3</sub>- Co<sub>3</sub>O<sub>4</sub> composite to less than 20 in PVA-TiO<sub>2</sub>-WO<sub>3</sub>, but increased to ~ 45 in PVA-TiO<sub>2</sub> composite. PVA composites exhibited distinct behavior consistent with previous research, according to optical and dielectric measurements. As a result, the studied NCs offer a potentially helpful composition for optoelectronic applications.</p></div>\",\"PeriodicalId\":646,\"journal\":{\"name\":\"Journal of Materials Science: Materials in Electronics\",\"volume\":\"36 2\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-01-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Science: Materials in Electronics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10854-025-14216-0\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science: Materials in Electronics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10854-025-14216-0","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Optical and dielectric properties of TiO2/WO3/Co3O4/polyvinyl alcohol (PVA) composites for optoelectronic utilizations
Polymeric composites based on PVA doped with TiO2, WO3, and Co3O4 are the subject of the study. A range of physicochemical techniques was used to examine the structure of PVA-based composites. A changing absorption edge for PVA is also seen in the optical studies; it begins at 3.8 eV and drops to 2.4 eV for the PVA-TiO2-WO3 combination. Furthermore, the indirect band gap for all composites doped with TiO2, WO3, and Co3O4 lowers, reaching 2.8 eV in the PVA-TiO2-WO3 composite. Pure PVA has the greatest value (5.7 eV). The refractive index, on the other hand, shows 1.67 in PVA and 2.08 in PVA-TiO2-WO3 composite. Additionally, the dielectric constant decreased from roughly 28 for PVA and PVA-TiO2-WO3- Co3O4 composite to less than 20 in PVA-TiO2-WO3, but increased to ~ 45 in PVA-TiO2 composite. PVA composites exhibited distinct behavior consistent with previous research, according to optical and dielectric measurements. As a result, the studied NCs offer a potentially helpful composition for optoelectronic applications.
期刊介绍：
The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.
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