Kubra Aydin, Mansu Kim, Hyunho Seok, Chulwoo Bae, Jinhyoung Lee, Muyoung Kim, Jonghwan Park, Joseph T. Hupp, Dongmok Whang, Hyeong-U Kim, Taesung Kim
{"title":"在电化学势下打开 MoS2 异质结构交界处附近的肖特基势垒","authors":"Kubra Aydin, Mansu Kim, Hyunho Seok, Chulwoo Bae, Jinhyoung Lee, Muyoung Kim, Jonghwan Park, Joseph T. Hupp, Dongmok Whang, Hyeong-U Kim, Taesung Kim","doi":"10.1002/eem2.12800","DOIUrl":null,"url":null,"abstract":"The exploration of heterostructures composed of two-dimensional (2D) transition metal dichalcogenide (TMDc) materials has garnered significant research attention due to the distinctive properties of each individual component and their phase-dependent unique properties. Using the plasma-enhanced chemical vapor deposition (PECVD) method, we analyze the fabrication of heterostructures consisting of two phases of molybdenum disulfide (MoS<sub>2</sub>) in four different cases. The initial hydrogen evolution reaction (HER) polarization curve indicates that the activity of the heterostructure MoS<sub>2</sub> is consistent with that of the underlying MoS<sub>2</sub>, rather than the surface activity of the upper MoS<sub>2</sub>. This behavior can be attributed to the presence of Schottky barriers, which include contact resistance, which significantly hampers the efficient charge transfer at junctions between the two different phases of MoS<sub>2</sub> layers and is mediated by van der Waals bonds. Remarkably, the energy barrier at the junction dissipates upon reaching a certain electrochemical potential, indicating surface activation from the top phase of MoS<sub>2</sub> in the heterostructure. Notably, the 1T/2H MoS<sub>2</sub> heterostructure demonstrates enhanced electrochemical stability compared to its metastable 1T-MoS<sub>2</sub>. This fundamental understanding paves the way for the creation of phase-controllable heterostructures through an experimentally viable PECVD, offering significant promise for a wide range of applications.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":null,"pages":null},"PeriodicalIF":13.0000,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Unlocking of Schottky Barrier Near the Junction of MoS2 Heterostructure Under Electrochemical Potential\",\"authors\":\"Kubra Aydin, Mansu Kim, Hyunho Seok, Chulwoo Bae, Jinhyoung Lee, Muyoung Kim, Jonghwan Park, Joseph T. Hupp, Dongmok Whang, Hyeong-U Kim, Taesung Kim\",\"doi\":\"10.1002/eem2.12800\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The exploration of heterostructures composed of two-dimensional (2D) transition metal dichalcogenide (TMDc) materials has garnered significant research attention due to the distinctive properties of each individual component and their phase-dependent unique properties. Using the plasma-enhanced chemical vapor deposition (PECVD) method, we analyze the fabrication of heterostructures consisting of two phases of molybdenum disulfide (MoS<sub>2</sub>) in four different cases. The initial hydrogen evolution reaction (HER) polarization curve indicates that the activity of the heterostructure MoS<sub>2</sub> is consistent with that of the underlying MoS<sub>2</sub>, rather than the surface activity of the upper MoS<sub>2</sub>. This behavior can be attributed to the presence of Schottky barriers, which include contact resistance, which significantly hampers the efficient charge transfer at junctions between the two different phases of MoS<sub>2</sub> layers and is mediated by van der Waals bonds. Remarkably, the energy barrier at the junction dissipates upon reaching a certain electrochemical potential, indicating surface activation from the top phase of MoS<sub>2</sub> in the heterostructure. Notably, the 1T/2H MoS<sub>2</sub> heterostructure demonstrates enhanced electrochemical stability compared to its metastable 1T-MoS<sub>2</sub>. This fundamental understanding paves the way for the creation of phase-controllable heterostructures through an experimentally viable PECVD, offering significant promise for a wide range of applications.\",\"PeriodicalId\":11554,\"journal\":{\"name\":\"Energy & Environmental Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":13.0000,\"publicationDate\":\"2024-08-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Energy & Environmental Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1002/eem2.12800\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy & Environmental Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/eem2.12800","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Unlocking of Schottky Barrier Near the Junction of MoS2 Heterostructure Under Electrochemical Potential
The exploration of heterostructures composed of two-dimensional (2D) transition metal dichalcogenide (TMDc) materials has garnered significant research attention due to the distinctive properties of each individual component and their phase-dependent unique properties. Using the plasma-enhanced chemical vapor deposition (PECVD) method, we analyze the fabrication of heterostructures consisting of two phases of molybdenum disulfide (MoS2) in four different cases. The initial hydrogen evolution reaction (HER) polarization curve indicates that the activity of the heterostructure MoS2 is consistent with that of the underlying MoS2, rather than the surface activity of the upper MoS2. This behavior can be attributed to the presence of Schottky barriers, which include contact resistance, which significantly hampers the efficient charge transfer at junctions between the two different phases of MoS2 layers and is mediated by van der Waals bonds. Remarkably, the energy barrier at the junction dissipates upon reaching a certain electrochemical potential, indicating surface activation from the top phase of MoS2 in the heterostructure. Notably, the 1T/2H MoS2 heterostructure demonstrates enhanced electrochemical stability compared to its metastable 1T-MoS2. This fundamental understanding paves the way for the creation of phase-controllable heterostructures through an experimentally viable PECVD, offering significant promise for a wide range of applications.
期刊介绍:
Energy & Environmental Materials (EEM) is an international journal published by Zhengzhou University in collaboration with John Wiley & Sons, Inc. The journal aims to publish high quality research related to materials for energy harvesting, conversion, storage, and transport, as well as for creating a cleaner environment. EEM welcomes research work of significant general interest that has a high impact on society-relevant technological advances. The scope of the journal is intentionally broad, recognizing the complexity of issues and challenges related to energy and environmental materials. Therefore, interdisciplinary work across basic science and engineering disciplines is particularly encouraged. The areas covered by the journal include, but are not limited to, materials and composites for photovoltaics and photoelectrochemistry, bioprocessing, batteries, fuel cells, supercapacitors, clean air, and devices with multifunctionality. The readership of the journal includes chemical, physical, biological, materials, and environmental scientists and engineers from academia, industry, and policy-making.