{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,24]],"date-time":"2026-10-24T01:46:29Z","timestamp":1792806389103,"version":"4.5.0"},"reference-count":99,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2025,11,24]],"date-time":"2025-11-24T00:00:00Z","timestamp":1763942400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Van der Waals (vdW) heterostructures composed of 2D materials offer a versatile platform for next\u2010generation optoelectronic devices due to their tunable band structures, strong light matter interactions, and clean vdW interfaces. Here, this work reports on the fabrication and in depth characterization of a broadband photodetector based on a vertically stacked MoTe\n                    <jats:sub>2<\/jats:sub>\n                    \/WS\n                    <jats:sub>2<\/jats:sub>\n                    heterostructure with a few layer graphene serving as transparent, tunable contact electrodes. The device is assembled entirely through mechanical exfoliation and dry transfer, ensuring pristine interfaces and preserving the intrinsic properties of the materials. Systematic optical, electrical, and density functional theory (DFT) analysis reveal a type II band alignment at the MoTe\n                    <jats:sub>2<\/jats:sub>\n                    WS\n                    <jats:sub>2<\/jats:sub>\n                    interface, facilitating efficient photocarrier separation. The incorporation of graphene contacts significantly enhances rectification behavior over 10\n                    <jats:sup>5<\/jats:sup>\n                    , suppresses contact induced recombination and improves photocurrent response due to their tunable work function and van der Waals bonding. The device exhibits a broadband photoresponse (220\u2013850 nm), high responsivity (\u2248650 A\u00a0W\n                    <jats:sup>\u22121<\/jats:sup>\n                    ), large detectivity (\u22481.3 \u00d7 10\n                    <jats:sup>12<\/jats:sup>\n                    Jones), and external quantum efficiency (\u22483.5 \u00d7 10\n                    <jats:sup>5<\/jats:sup>\n                    %). Time resolved studies demonstrate rapid, bias dependent photoresponse, making the device suitable for high speed photodetection. This study highlights the critical role of contact engineering and interfacial band alignment in optimizing 2D heterostructure based optoelectronics.\n                  <\/jats:p>","DOI":"10.1002\/smll.202508208","type":"journal-article","created":{"date-parts":[[2025,11,24]],"date-time":"2025-11-24T10:30:28Z","timestamp":1763980228000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["High\u2010Performance Self Powered Broadband Photodetection in Graphene\u2010Contacted MoTe\n                    <sub>2<\/sub>\n                    \/WS\n                    <sub>2<\/sub>\n                    van der Waals Heterostructures via Interfacial Band Engineering"],"prefix":"10.1002","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-0851-9045","authenticated-orcid":false,"given":"Muhammad","family":"Rabeel","sequence":"first","affiliation":[{"name":"Department of Electrical Engineering and Convergence Engineering for Intelligent Drone Sejong University  Seoul 05006 South Korea"},{"name":"Department of Semiconductor Systems Engineering Sejong University  Seoul 05006 South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hammad","family":"Ghazanfar","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering and Convergence Engineering for Intelligent Drone Sejong University  Seoul 05006 South Korea"},{"name":"Department of Semiconductor Systems Engineering Sejong University  Seoul 05006 South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Honggyun","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Semiconductor Systems Engineering Sejong University  Seoul 05006 South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ehsan","family":"Elahi","sequence":"additional","affiliation":[{"name":"Department of Inorganic Chemistry University of Chemistry and Technology Prague  Prague 616628 Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Syed Jazib Abbas","family":"Zaidi","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Chemical Engineering Hanyang University  Ansan 15588 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Muneeb","family":"Ahmad","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering and Convergence Engineering for Intelligent Drone Sejong University  Seoul 05006 South Korea"},{"name":"Department of Semiconductor Systems Engineering Sejong University  Seoul 05006 South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Faisal","family":"Ghafoor","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering and Convergence Engineering for Intelligent Drone Sejong University  Seoul 05006 South Korea"},{"name":"Department of Semiconductor Systems Engineering Sejong University  Seoul 05006 South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Muhammad Wajid","family":"Zulfiqar","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering and Convergence Engineering for Intelligent Drone Sejong University  Seoul 05006 South Korea"},{"name":"Department of Semiconductor Systems Engineering Sejong University  Seoul 05006 South Korea"},{"name":"Graduate School of Optical Engineering Sejong University  Seoul 05006 South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Muhammad","family":"Suleman","sequence":"additional","affiliation":[{"name":"Department of Nanotechnology and Advanced Materials Engineering, and H.M.C. 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