Journal article
Optical and electrical properties of two-dimensional palladium diselenide
G Zhang, M Amani, A Chaturvedi, C Tan, J Bullock, X Song, H Kim, DH Lien, MC Scott, H Zhang, A Javey
Applied Physics Letters | A I P Publishing LLC | Published : 2019
DOI: 10.1063/1.5097825
Abstract
© 2019 Author(s). Two-dimensional (2D) noble-metal dichalcogenides exhibit exceptionally strong thickness-dependent bandgaps, which can be leveraged in a wide variety of device applications. A detailed study of their optical (e.g., optical bandgaps) and electrical properties (e.g., mobilities) is important in determining potential future applications of these materials. In this work, we perform detailed optical and electrical characterization of 2D PdSe2 nanoflakes mechanically exfoliated from a single-crystalline source. Layer-dependent bandgap analysis from optical absorption results indicates that this material is an indirect semiconductor with bandgaps of approximately 1.37 and 0.50 eV f..
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Grants
Awarded by U.S. Department of Energy
Funding Acknowledgements
Device fabrication and measurements were supported by the Defense Advanced Research Projects Agency under Contract No. HR0011-16-1-0004. Synthesis work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division under Contract No. DE-AC02-05CH11231 within the Electronic Materials Program (KC1201). The work at the Molecular Foundry was supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. H.Z. thanks the support from ITC via the Hong Kong Branch of National Precious Metals Material Engineering Research Center and the Start-Up Grant from the City University of Hong Kong.