{"title":"界面电荷分离对新型WO3·H2O/W18O49异质结优越介电性能的影响","authors":"Surbhi Sharma, Jaspreet Kaur, Rajesh Kumar","doi":"10.1007/s12034-025-03471-w","DOIUrl":null,"url":null,"abstract":"<div><p>The elementary and critical process in dielectric capacitors is interfacial charge separation. In this work, we propose the synthesis and investigation of the optical, electrical and dielectric properties of a WO<sub>3</sub>·H<sub>2</sub>O/W<sub>18</sub>O<sub>49</sub> heterojunction with optimized oxygen vacancies for efficient charge storage applications. Tungsten-oxide-based heterojunctions were synthesized via a co-precipitation method using varying HCl concentrations. XRD analysis confirmed the formation of distinct phases, while XPS and Raman spectra revealed effective charge transfer and structural defects. UV-DRS studies highlighted the formation of oxygen-deficient m-W<sub>18</sub>O<sub>49</sub>. Enhanced dielectric constant, low impedance and increased conductivity were observed, particularly with low HCl concentrations, due to improved interfacial charge separation in WO<sub>3</sub>·H<sub>2</sub>O/W<sub>18</sub>O<sub>49</sub> heterojunction. These properties make the WO<sub>3</sub>·H<sub>2</sub>O/W<sub>18</sub>O<sub>49</sub> heterojunction a promising candidate for energy storage applications, offering significant advantages such as improved cyclic stability, power density and reduced heat generation.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 4","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of interfacial charge separation on the superior dielectric properties of novel WO3·H2O/W18O49 heterojunction\",\"authors\":\"Surbhi Sharma, Jaspreet Kaur, Rajesh Kumar\",\"doi\":\"10.1007/s12034-025-03471-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The elementary and critical process in dielectric capacitors is interfacial charge separation. In this work, we propose the synthesis and investigation of the optical, electrical and dielectric properties of a WO<sub>3</sub>·H<sub>2</sub>O/W<sub>18</sub>O<sub>49</sub> heterojunction with optimized oxygen vacancies for efficient charge storage applications. Tungsten-oxide-based heterojunctions were synthesized via a co-precipitation method using varying HCl concentrations. XRD analysis confirmed the formation of distinct phases, while XPS and Raman spectra revealed effective charge transfer and structural defects. UV-DRS studies highlighted the formation of oxygen-deficient m-W<sub>18</sub>O<sub>49</sub>. Enhanced dielectric constant, low impedance and increased conductivity were observed, particularly with low HCl concentrations, due to improved interfacial charge separation in WO<sub>3</sub>·H<sub>2</sub>O/W<sub>18</sub>O<sub>49</sub> heterojunction. These properties make the WO<sub>3</sub>·H<sub>2</sub>O/W<sub>18</sub>O<sub>49</sub> heterojunction a promising candidate for energy storage applications, offering significant advantages such as improved cyclic stability, power density and reduced heat generation.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":502,\"journal\":{\"name\":\"Bulletin of Materials Science\",\"volume\":\"48 4\",\"pages\":\"\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2025-09-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of Materials Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12034-025-03471-w\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12034-025-03471-w","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Impact of interfacial charge separation on the superior dielectric properties of novel WO3·H2O/W18O49 heterojunction
The elementary and critical process in dielectric capacitors is interfacial charge separation. In this work, we propose the synthesis and investigation of the optical, electrical and dielectric properties of a WO3·H2O/W18O49 heterojunction with optimized oxygen vacancies for efficient charge storage applications. Tungsten-oxide-based heterojunctions were synthesized via a co-precipitation method using varying HCl concentrations. XRD analysis confirmed the formation of distinct phases, while XPS and Raman spectra revealed effective charge transfer and structural defects. UV-DRS studies highlighted the formation of oxygen-deficient m-W18O49. Enhanced dielectric constant, low impedance and increased conductivity were observed, particularly with low HCl concentrations, due to improved interfacial charge separation in WO3·H2O/W18O49 heterojunction. These properties make the WO3·H2O/W18O49 heterojunction a promising candidate for energy storage applications, offering significant advantages such as improved cyclic stability, power density and reduced heat generation.
期刊介绍：
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.
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