{"title":"实现 Hf1-xZrxO2 薄膜能量转换性能的超低工作电压","authors":"","doi":"10.1016/j.jmat.2024.01.001","DOIUrl":null,"url":null,"abstract":"<div><p>Emerging ferroelectric and antiferroelectric HfO<sub>2</sub>-based thin films are attractive candidates for energy conversion and storage applications. In this work, the polar phase transformation between tetragonal and orthorhombic phases associated with ferroelectric or antiferroelectric behaviors is utilized to manipulate the electrocaloric cooling and energy storage performances in Zr-doped, woken up HfO<sub>2</sub> ultrathin films. A giant electrocaloric temperature change of up to 11.85 K in Hf<sub>0.5</sub>Zr<sub>0.5</sub>O<sub>2</sub> with the morphotropic phase boundary (MPB) state and a high energy storage density of 39.34 J/cm<sup>3</sup> in the tetragonal phase-dominant Hf<sub>0.25</sub>Zr<sub>0.75</sub>O<sub>2</sub> system are obtained. More interestingly, contrary to overdoping and excessive electric fields, an appropriate Zr concentration of 0.5 and an applicable driving field of 1.91 MV/cm are desired for the electrocaloric effect, resulting in an ultralow operating voltage as low as 1.3 V in this 6.8 nm thick Hf<sub>0.5</sub>Zr<sub>0.5</sub>O<sub>2</sub> film. These findings illustrate that the structural design strategy is a visible method for achieving optimal energy-related behaviors and highlight the great possibilities for building future energy-related devices.</p></div>","PeriodicalId":16173,"journal":{"name":"Journal of Materiomics","volume":null,"pages":null},"PeriodicalIF":8.4000,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352847824000170/pdfft?md5=66364e2d221828654394fcfac5008340&pid=1-s2.0-S2352847824000170-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Ultralow operating voltage for energy conversion performance in Hf1–xZrxO2 thin films\",\"authors\":\"\",\"doi\":\"10.1016/j.jmat.2024.01.001\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Emerging ferroelectric and antiferroelectric HfO<sub>2</sub>-based thin films are attractive candidates for energy conversion and storage applications. In this work, the polar phase transformation between tetragonal and orthorhombic phases associated with ferroelectric or antiferroelectric behaviors is utilized to manipulate the electrocaloric cooling and energy storage performances in Zr-doped, woken up HfO<sub>2</sub> ultrathin films. A giant electrocaloric temperature change of up to 11.85 K in Hf<sub>0.5</sub>Zr<sub>0.5</sub>O<sub>2</sub> with the morphotropic phase boundary (MPB) state and a high energy storage density of 39.34 J/cm<sup>3</sup> in the tetragonal phase-dominant Hf<sub>0.25</sub>Zr<sub>0.75</sub>O<sub>2</sub> system are obtained. More interestingly, contrary to overdoping and excessive electric fields, an appropriate Zr concentration of 0.5 and an applicable driving field of 1.91 MV/cm are desired for the electrocaloric effect, resulting in an ultralow operating voltage as low as 1.3 V in this 6.8 nm thick Hf<sub>0.5</sub>Zr<sub>0.5</sub>O<sub>2</sub> film. These findings illustrate that the structural design strategy is a visible method for achieving optimal energy-related behaviors and highlight the great possibilities for building future energy-related devices.</p></div>\",\"PeriodicalId\":16173,\"journal\":{\"name\":\"Journal of Materiomics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.4000,\"publicationDate\":\"2024-01-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S2352847824000170/pdfft?md5=66364e2d221828654394fcfac5008340&pid=1-s2.0-S2352847824000170-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materiomics\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2352847824000170\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materiomics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352847824000170","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Ultralow operating voltage for energy conversion performance in Hf1–xZrxO2 thin films
Emerging ferroelectric and antiferroelectric HfO2-based thin films are attractive candidates for energy conversion and storage applications. In this work, the polar phase transformation between tetragonal and orthorhombic phases associated with ferroelectric or antiferroelectric behaviors is utilized to manipulate the electrocaloric cooling and energy storage performances in Zr-doped, woken up HfO2 ultrathin films. A giant electrocaloric temperature change of up to 11.85 K in Hf0.5Zr0.5O2 with the morphotropic phase boundary (MPB) state and a high energy storage density of 39.34 J/cm3 in the tetragonal phase-dominant Hf0.25Zr0.75O2 system are obtained. More interestingly, contrary to overdoping and excessive electric fields, an appropriate Zr concentration of 0.5 and an applicable driving field of 1.91 MV/cm are desired for the electrocaloric effect, resulting in an ultralow operating voltage as low as 1.3 V in this 6.8 nm thick Hf0.5Zr0.5O2 film. These findings illustrate that the structural design strategy is a visible method for achieving optimal energy-related behaviors and highlight the great possibilities for building future energy-related devices.
期刊介绍:
The Journal of Materiomics is a peer-reviewed open-access journal that aims to serve as a forum for the continuous dissemination of research within the field of materials science. It particularly emphasizes systematic studies on the relationships between composition, processing, structure, property, and performance of advanced materials. The journal is supported by the Chinese Ceramic Society and is indexed in SCIE and Scopus. It is commonly referred to as J Materiomics.