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Chemical Vapor Deposition Growth of Few-Layer MoTe2 in the 2H, 1T′, and 1T Phases: Tunable Properties of MoTe2 Films

Autor: I-Hsi Lu, Sarah Bobek, Ariana E. Nguyen, Cindy S. Merida, Sepedeh A. Naghibi Alvillar, Thomas A. Empante, Edwin Preciado, Michael J. Gomez, Miguel Isarraraz, Velveth Klee, Ludwig Bartels, Yao Zhou, Evan J. Reed, Adam J. Berges, Michael D. Valentin

Publikováno v: ACS Nano. 11:900-905

Chemical vapor deposition allows the preparation of few-layer films of MoTe2 in three distinct structural phases depending on the growth quench temperature: 2H, 1T′, and 1T. We present experimental and computed Raman spectra for each of the phases

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5efd47518b7879f1a94b4a2e1380426
https://doi.org/10.1021/acsnano.6b07499

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Superlinear Composition-Dependent Photocurrent in CVD-Grown Monolayer MoS2(1–x)Se2x Alloy Devices

Autor: Chris Lee, Ariana E. Nguyen, John Mann, François Léonard, Brandon N. Davis, Jessica L McKinley, I-Hsi Lu, Mark Triplett, Velveth Klee, Ludwig Bartels, Sarah Bobek, David Barroso, Joseph Martinez, Erickson Kristopher J, Edwin Preciado, A. Alec Talin

Publikováno v: Nano Letters. 15:2612-2619

Transition metal dichalcogenides (TMDs) have emerged as a new class of two-dimensional materials that are promising for electronics and photonics. To date, optoelectronic measurements in these materials have shown the conventional behavior expected f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15fdd50708e529337dec5454ee37a016
https://doi.org/10.1021/acs.nanolett.5b00190

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2-Dimensional Transition Metal Dichalcogenides with Tunable Direct Band Gaps: MoS2(1-x)Se2xMonolayers

Publikováno v: Advanced Materials. 26:1399-1404

MoS2(1-x) Se2x single-layer films are prepared using a mixture of organic selenium and sulfur precursors as well as a solid molybdenum source. The direct bandgaps are found to scale nearly linearly with composition in the range of 1.87 eV (pure singl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7d931b1b6b981ee245866b0aada55d0e
https://doi.org/10.1002/adma.201304389

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Single- and few-layer transfer-printed CVD MoS2 nanomechanical resonators with enhancement by thermal annealing

Autor: Chun-Yu Huang, Ariana E. Nguyen, Hao Jia, Philip X.-L. Feng, Rui Yang, Sarah Bobek, Ludwig Bartels, Sahar Naghibi Alvillar, Michelle Wurch

Publikováno v: 2016 IEEE International Frequency Control Symposium (IFCS).

We report on experimental demonstration of single- and few-layer chemical vapor deposited (CVD) molybdenum disulfide (MoS 2 ) nanomechanical resonators by employing a scalable transfer-print method. CVD MoS 2 crystals are released from their growth s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d83bc216757c54535e06da1b5ddb2924
https://doi.org/10.1109/fcs.2016.7546737

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Band structure characterization of WS2 grown by chemical vapor deposition

Growth by chemical vapor deposition (CVD) leads to multilayer WS2 of very high quality, based on high-resolution angle-resolved photoemission spectroscopy. The experimental valence band electronic structure is considered to be in good agreement with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75aec7923fc76d2054e787cee8dbab79
http://hdl.handle.net/11368/2891205

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Postgrowth tuning of the bandgap of single-layer molybdenum disulfide films by sulfur/selenium exchange

Publikováno v: ACS nano. 8(5)

We demonstrate bandgap tuning of a single-layer MoS2 film on SiO2/Si via substitution of its sulfur atoms by selenium through a process of gentle sputtering, exposure to a selenium precursor, and annealing. We characterize the substitution process bo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::331547b8cee628b39a14f0a40240e868
https://pubmed.ncbi.nlm.nih.gov/24684434

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2-dimensional transition metal dichalcogenides with tunable direct band gaps: MoS₂(₁-x) Se₂x monolayers

Publikováno v: Advanced materials (Deerfield Beach, Fla.). 26(9)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::f7fba96a420d4c5cc922904d4bde3f7e
https://pubmed.ncbi.nlm.nih.gov/24339159

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