{"title":"通过优化退火提高二维材料的应变调制效率","authors":"Delong Cui, Jinkun Han, Xiaofei Yue, Shuwen Shen, Wenxuan Wu, Xueting Zhou, Ran Liu, Laigui Hu, Zhi-Jun Qiu* and Chunxiao Cong*, ","doi":"10.1021/acsanm.5c02552","DOIUrl":null,"url":null,"abstract":"<p >Effective strain transfer is crucial for advancing strain engineering in two-dimensional (2D) materials and their integration into flexible devices. However, during the bending or stretching processes, severe interfacial slippage commonly occurs between 2D materials and their substrates. This phenomenon not only diminishes the efficiency of strain transfer but also undermines its reliability, posing a substantial challenge to the fundamental study of intrinsic strain response characteristics of 2D materials and their practical implementation in flexible electronics. To address this issue, we present a systematic and optimized annealing strategy that significantly improves the effectiveness and robustness of strain transfer in 2D material-based systems. By analyzing the strain-dependent photoluminescence spectra of monolayer tungsten selenide (WSe<sub>2</sub>) on various flexible substrates subjected to different annealing conditions, we identified the optimal annealing temperature as the glass transition temperature of the substrate. This annealing process substantially enhances the mechanical coupling between the 2D material and the substrate, leading to more reliable and larger strain application. Optimization of the annealing strategy has resulted in an approximate 133.76% enhancement in the strain transfer efficiency of 2D materials on flexible substrates. Our findings provide critical insights for effective strain modulation in 2D materials and offer valuable guidance for the development and performance optimization of flexible electronic and optoelectronic devices based on 2D materials and their heterostructures.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 29","pages":"14811–14818"},"PeriodicalIF":5.5000,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced Strain Modulation Efficiency in Two-Dimensional Materials via Optimal Annealing\",\"authors\":\"Delong Cui, Jinkun Han, Xiaofei Yue, Shuwen Shen, Wenxuan Wu, Xueting Zhou, Ran Liu, Laigui Hu, Zhi-Jun Qiu* and Chunxiao Cong*, \",\"doi\":\"10.1021/acsanm.5c02552\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Effective strain transfer is crucial for advancing strain engineering in two-dimensional (2D) materials and their integration into flexible devices. However, during the bending or stretching processes, severe interfacial slippage commonly occurs between 2D materials and their substrates. This phenomenon not only diminishes the efficiency of strain transfer but also undermines its reliability, posing a substantial challenge to the fundamental study of intrinsic strain response characteristics of 2D materials and their practical implementation in flexible electronics. To address this issue, we present a systematic and optimized annealing strategy that significantly improves the effectiveness and robustness of strain transfer in 2D material-based systems. By analyzing the strain-dependent photoluminescence spectra of monolayer tungsten selenide (WSe<sub>2</sub>) on various flexible substrates subjected to different annealing conditions, we identified the optimal annealing temperature as the glass transition temperature of the substrate. This annealing process substantially enhances the mechanical coupling between the 2D material and the substrate, leading to more reliable and larger strain application. Optimization of the annealing strategy has resulted in an approximate 133.76% enhancement in the strain transfer efficiency of 2D materials on flexible substrates. Our findings provide critical insights for effective strain modulation in 2D materials and offer valuable guidance for the development and performance optimization of flexible electronic and optoelectronic devices based on 2D materials and their heterostructures.</p>\",\"PeriodicalId\":6,\"journal\":{\"name\":\"ACS Applied Nano Materials\",\"volume\":\"8 29\",\"pages\":\"14811–14818\"},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2025-07-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Nano Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsanm.5c02552\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Nano Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsanm.5c02552","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Enhanced Strain Modulation Efficiency in Two-Dimensional Materials via Optimal Annealing
Effective strain transfer is crucial for advancing strain engineering in two-dimensional (2D) materials and their integration into flexible devices. However, during the bending or stretching processes, severe interfacial slippage commonly occurs between 2D materials and their substrates. This phenomenon not only diminishes the efficiency of strain transfer but also undermines its reliability, posing a substantial challenge to the fundamental study of intrinsic strain response characteristics of 2D materials and their practical implementation in flexible electronics. To address this issue, we present a systematic and optimized annealing strategy that significantly improves the effectiveness and robustness of strain transfer in 2D material-based systems. By analyzing the strain-dependent photoluminescence spectra of monolayer tungsten selenide (WSe2) on various flexible substrates subjected to different annealing conditions, we identified the optimal annealing temperature as the glass transition temperature of the substrate. This annealing process substantially enhances the mechanical coupling between the 2D material and the substrate, leading to more reliable and larger strain application. Optimization of the annealing strategy has resulted in an approximate 133.76% enhancement in the strain transfer efficiency of 2D materials on flexible substrates. Our findings provide critical insights for effective strain modulation in 2D materials and offer valuable guidance for the development and performance optimization of flexible electronic and optoelectronic devices based on 2D materials and their heterostructures.
期刊介绍:
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.