High‐performance electronics and optoelectronics of monolayer tungsten diselenide full film from pre‐seeding strategy
Year: 2021
Type: article
Abstract: Tungsten diselenide (WSe2) possesses extraordinary electronic properties for applications in electronics, optoelectronics, and emerging exciton physics. The synthesis of monolayer WSe2 film is of topmost for device arrays and integrated circuits. The monolayer WSe2 film has yet been reported by thermal chemical vapor deposition (CVD) approach, and the nucleation mechanism remains unclear. Here, we report a pre‐seeding strategy for finely regulating the nuclei density at an early stage and achieving a fully covered film after chemical vapor deposition growth. The underlying mechanism is heterogeneous nucleation from the pre‐seeding tungsten oxide nanoparticles. At first, we optimized the precursor concentration for pre‐seeding. Besides, we confirmed the superiority of the pre‐seeding method, compared with three types of substrate pretreatments, including nontreatment, sonication in an organic solvent, and oxygen plasma. Eventually, the high‐quality synthetic WSe2 monolayer film exhibits excellent device performance in field‐effect transistors and photodetectors. We extracted thermodynamic activation energy from the nucleation and growth data. Our results may shed light on the wafer‐scale production of homogeneous monolayer films of WSe2, other 2D materials, and their van der Waals heterostructures. image
Source: InfoMat
DOI: 10.1002/inf2.12259
Authors: Shu Zhang, Jinbo Pang, Qilin Cheng, Feng Yang, Yu Chen, Yu Liu, Yufen Li, Thomas Gemming, Xiaoyan Liu, Bergoi Ibarlucea, Jiali Yang, Hong Liu, Weijia Zhou, Gianaurelio Cuniberti, Mark H. Rümmeli
Institutions: University of Jinan, Southern University of Science and Technology, Chinese Academy of Sciences, Institute of High Energy Physics, Soochow University, Leibniz Institute for Solid State and Materials Research, Max Bergmann Center of Biomaterials, Center for Advancing Electronics Dresden, Technische Universität Dresden, Shandong University, State Key Laboratory of Crystal Materials, Dresden Center for Computational Materials Science, Centre of Polymer and Carbon Materials, Polish Academy of Sciences
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,500
Funders: National Science Foundation, National Natural Science Foundation of China, Chinese Academy of Sciences, Natural Science Foundation of Shandong Province, Chinesisch-Deutsche Zentrum für Wissenschaftsförderung, Southern University of Science and Technology, European Regional Development Fund, Institute of High Energy Physics, National Key Research and Development Program of China, Beijing Synchrotron Radiation Facility, High Energy Physics, Beijing National Laboratory for Molecular Sciences
OpenAlex ID: W3211059424