{"title":"Graphene/WS2/LaVO3 heterojunction for self-powered, high-speed, and broadband photodetectors","authors":"Dong Hee Shin , Hosun Lee","doi":"10.1016/j.cap.2024.11.014","DOIUrl":null,"url":null,"abstract":"<div><div>Recently, there has been interest in developing high-performance self-driven photodetectors (PDs) using 2D-based heterostructures due to their unique optoelectronic properties. Here, we demonstrate that vertical-heterostructures based on graphene (Gr) transparent conductive electrodes, n-type 2D WS<sub>2</sub>, and p-type LaVO<sub>3</sub> realize a broadband-responsive PD covering the wavelength range of 300–850 nm. Due to the formation of an electric field at the WS<sub>2</sub>/LaVO<sub>3</sub> interface and the photovoltaic effect, this structure shows a rectifying operation with a maximum detectivity of 2.1 × 10<sup>10</sup> Jones at zero bias. Additionally, it exhibits a fast fall time of 435 μs and a 3 dB bandwidth of 2300 Hz, making it suitable for high-speed self-powered optoelectronic applications. Therefore, the TETA-Gr/WS<sub>2</sub>/LaVO<sub>3</sub> heterojunction is proposed as an excellent candidate for high-performance, self-powered, and broadband PDs.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"70 ","pages":"Pages 69-75"},"PeriodicalIF":2.4000,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Current Applied Physics","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1567173924002529","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Recently, there has been interest in developing high-performance self-driven photodetectors (PDs) using 2D-based heterostructures due to their unique optoelectronic properties. Here, we demonstrate that vertical-heterostructures based on graphene (Gr) transparent conductive electrodes, n-type 2D WS2, and p-type LaVO3 realize a broadband-responsive PD covering the wavelength range of 300–850 nm. Due to the formation of an electric field at the WS2/LaVO3 interface and the photovoltaic effect, this structure shows a rectifying operation with a maximum detectivity of 2.1 × 1010 Jones at zero bias. Additionally, it exhibits a fast fall time of 435 μs and a 3 dB bandwidth of 2300 Hz, making it suitable for high-speed self-powered optoelectronic applications. Therefore, the TETA-Gr/WS2/LaVO3 heterojunction is proposed as an excellent candidate for high-performance, self-powered, and broadband PDs.
期刊介绍：
Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications.
Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques.
Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals.
Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review.
The Journal is owned by the Korean Physical Society.
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