# Resonant Band Hybridization in Alloyed Transition Metal Dichalcogenide Heterobilayers https://mdr.nims.go.jp/datasets/a1231507-85e8-4763-9489-52b090cbe019 ## File - [Advanced Materials - 2024 - Catanzaro - Resonant Band Hybridization in Alloyed Transition Metal Dichalcogenide.pdf](https://mdr.nims.go.jp/filesets/d8f8dc36-ce97-40f2-a2c3-2724ad0fcbe1/download) ([Detail](https://mdr.nims.go.jp/filesets/d8f8dc36-ce97-40f2-a2c3-2724ad0fcbe1.md)) ## Id a1231507-85e8-4763-9489-52b090cbe019 ## Local identifier ## Visibility open_to_public ## State published ## Created at 2025-02-25T02:08:15.356362Z ## Updated at 2025-02-25T23:30:39.880973Z ## Published at 2025-02-25T23:30:39.954698Z ## Doi ## First published url https://doi.org/10.1002/adma.202309644 ## Date published 2024-02-13 ## Recorded date published 2024-5 ## Resource type journal_article ## Manuscript type vor ## Collection ## Title - title: Resonant Band Hybridization in Alloyed Transition Metal Dichalcogenide Heterobilayers title_type: original lang: en ## Description - description: Bandstructure engineering using alloying is widely utilised for achieving optimised performance in modern semiconductor devices. While alloying has been studied in monolayer transition metal dichalcogenides, its appli- cation in van der Waals heterostructures built from atomically thin layers is largely unexplored. Here, we fabricate heterobilayers made from mono- layers of WSe2 (or MoSe2) and MoxW1−xSe2 alloy and observe nontrivial tuning of the resultant bandstructure as a function of concentration x. We monitor this evolution by measuring the energy of photolumines- cence (PL) of the interlayer exciton (IX) composed of an electron and hole residing in different monolayers. In MoxW1−xSe2/WSe2, we observe a strong IX energy shift of ≈100 meV for x varied from 1 to 0.6. However, for x < 0.6 this shift saturates and the IX PL energy asymptotically approaches that of the indirect bandgap in bilayer WSe2. We theoretically interpret this observation as the strong variation of the conduction band K valley for x > 0.6, with IX PL arising from the K − K transition, while for x < 0.6, the bandstructure hybridization becomes prevalent leading to the dominating momentum-indirect K-Q transition. This bandstructure hybridization is accompanied with strong modification of IX PL dynam- ics and nonliner exciton properties. Our work provides foundation for bandstructure engineering in van der Waals heterostructures highlighting the importance of hybridization effects and opening a way to devices with accurately tailored electronic properties. description_type: abstract lang: und ## Creator - name: Alessandro Catanzaro role: author - name: Armando Genco role: author - name: Charalambos Louca role: author - name: David A. Ruiz‐Tijerina role: author - name: Daniel J. Gillard role: author - name: Luca Sortino role: author - name: Aleksey Kozikov role: author - name: Evgeny M. Alexeev role: author - name: Riccardo Pisoni role: author - name: Lee Hague role: author - name: Kenji Watanabe role: author orcid: https://orcid.org/0000-0003-3701-8119 organization: National Institute for Materials Science ror: https://ror.org/026v1ze26 - name: Takashi Taniguchi role: author orcid: https://orcid.org/0000-0002-1467-3105 organization: National Institute for Materials Science ror: https://ror.org/026v1ze26 - name: Klaus Ensslin role: author - name: Kostya S. Novoselov role: author - name: Vladimir Fal'ko role: author - name: Alexander I. Tartakovskii role: author ## Contact agent ## Publisher organization: Wiley ## Managing organization ## Keyword - subject: Bandstructure engineering schema: not_defined - subject: van der Waals heterostructures schema: not_defined - subject: interlayer exciton schema: not_defined ## Rights - identifier: https://creativecommons.org/licenses/by/4.0/ ## Other identifier(s) ## Data origin - data_origin_type: other ## Embargo ## Journal - title: Advanced Materials issn: '15214095' volume: '36' issue: '19' article_number: '2309644' ## Conference ## Related item ## Funding - identifier: EP/V034804/1 funder_name: Engineering and Physical Sciences Research Council - identifier: EP/S030751/1 funder_name: Engineering and Physical Sciences Research Council - identifier: EP/V007033/1 funder_name: Engineering and Physical Sciences Research Council - identifier: '676108' funder_name: Horizon 2020 - identifier: '101029644' funder_name: Horizon 2020 - identifier: 20H00354 funder_name: Japan Society for the Promotion of Science - identifier: EP/V006975/1 funder_name: Engineering and Physical Sciences Research Council - identifier: EP/V026496/1 funder_name: Engineering and Physical Sciences Research Council - identifier: EP/S030719/1 funder_name: Engineering and Physical Sciences Research Council - identifier: '785219' funder_name: Horizon 2020 - identifier: 23H02052 funder_name: Japan Society for the Promotion of Science - identifier: RSRP\R\190000 funder_name: Royal Society - identifier: '881603' funder_name: Horizon 2020 - identifier: 21H05233 funder_name: Japan Society for the Promotion of Science ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: d8f8dc36-ce97-40f2-a2c3-2724ad0fcbe1 filename: Advanced Materials - 2024 - Catanzaro - Resonant Band Hybridization in Alloyed Transition Metal Dichalcogenide.pdf content_type: application/pdf size: 1248170 md5: 9bc2410d5d93e64d76db27fd58e839d0 ## Thumbnail fileset_id: d8f8dc36-ce97-40f2-a2c3-2724ad0fcbe1 filename: Advanced Materials - 2024 - Catanzaro - Resonant Band Hybridization in Alloyed Transition Metal Dichalcogenide.pdf