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1D p–n Junction Electronic and Optoelectronic Devices from Transition Metal Dichalcogenide Lateral Heterostructures Grown by One‐Pot Chemical Vapor Deposition Synthesis

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Najafidehaghani, Emad 
Gan, Ziyang 
George, Antony 
Lehnert, Tibor 
Ngo, Gia Quyet 


jats:titleAbstract</jats:title>jats:pLateral heterostructures of dissimilar monolayer transition metal dichalcogenides provide great opportunities to build 1D in‐plane jats:italicp–n</jats:italic> junctions for sub‐nanometer thin low‐power electronic, optoelectronic, optical, and sensing devices. Electronic and optoelectronic applications of such jats:italicp–n</jats:italic> junction devices fabricated using a scalable one‐pot chemical vapor deposition process yielding MoSejats:sub2</jats:sub>‐WSejats:sub2</jats:sub> lateral heterostructures are reported here. The growth of the monolayer lateral heterostructures is achieved by in situ controlling the partial pressures of the oxide precursors by a two‐step heating protocol. The grown lateral heterostructures are characterized structurally and optically using optical microscopy, Raman spectroscopy/microscopy, and photoluminescence spectroscopy/microscopy. High‐resolution transmission electron microscopy further confirms the high‐quality 1D boundary between MoSejats:sub2</jats:sub> and WSejats:sub2</jats:sub> in the lateral heterostructure. jats:italicp–n</jats:italic> junction devices are fabricated from these lateral heterostructures and their applicability as rectifiers, solar cells, self‐powered photovoltaic photodetectors, ambipolar transistors, and electroluminescent light emitters are demonstrated.</jats:p>


Funder: European Union's Horizon 2020

Funder: Ministry of Science, Research and the Arts

Funder: Max Planck School of Photonics

Funder: European Union; Id:

Funder: European Social Funds


40 Engineering, 51 Physical Sciences, 4016 Materials Engineering, 4018 Nanotechnology, 5104 Condensed Matter Physics

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Advanced Functional Materials

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Deutsche Forschungsgemeinschaft (275/257‐1)
DFG (TU149/9‐1)
Federal Ministry of Education and Science of Germany (13XP5053A)
Federal State of Thuringia (2018FGR00088.)