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Title: Electronic, transport, and optical properties of bulk and mono-layer PdSe2

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4933302· OSTI ID:1265984
 [1];  [2];  [3];  [4]
  1. Univ. of Missouri, Columbia, MO (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Florida State Univ., Tallahassee, FL (United States)
  4. Univ. of Missouri, Columbia, MO (United States)

In this study, the electronic and optical properties of bulk and monolayer PdSe2 are investigated using first-principles calculations. Using the modified Becke-Johnson potential, we find semiconductor behavior for both bulk and monolayer PdSe2 with indirect gap values of 0.03 eV for bulk and 1.43 eV for monolayer, respectively. Our sheet optical conductivity results support this observation and show similar anisotropic feature in the 2D plane. We further study the thermoelectric properties of the 2D PdSe2 using Blotzmann transport model and find interestingly high Seebeck coefficients (>200 μV/K) for both p- and n-type up to high doping level (~2 × 1013 cm–2) with an anisotropic character in an electrical conductivity suggesting better thermoelectric performance along y direction in the plane.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC); Florida State Univ., Tallahassee, FL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; SC0008832
OSTI ID:
1265984
Alternate ID(s):
OSTI ID: 1333509
Journal Information:
Applied Physics Letters, Vol. 107, Issue 15; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 142 works
Citation information provided by
Web of Science

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Recent Progress on 2D Noble‐Transition‐Metal Dichalcogenides journal October 2019
High Mobility 2D Palladium Diselenide Field-Effect Transistors with Tunable Ambipolar Characteristics journal April 2017
High‐Performance, Room Temperature, Ultra‐Broadband Photodetectors Based on Air‐Stable PdSe 2 journal April 2019
Striated 2D Lattice with Sub‐nm 1D Etch Channels by Controlled Thermally Induced Phase Transformations of PdSe 2 journal September 2019
Multilayered PdSe 2 /Perovskite Schottky Junction for Fast, Self‐Powered, Polarization‐Sensitive, Broadband Photodetectors, and Image Sensor Application journal August 2019
Computational Screening of 2D Materials and Rational Design of Heterojunctions for Water Splitting Photocatalysts journal April 2018
Construction of bilayer PdSe2 on epitaxial graphene journal May 2018
Monolayer PdSe2: A promising two-dimensional thermoelectric material journal February 2018
Prediction of a room-temperature eight-coordinate two-dimensional topological insulator: penta-RuS4 monolayer journal September 2017
Strain-Modulated Electronic Structure and Infrared Light Adsorption in Palladium Diselenide Monolayer journal January 2017
Atomic structure of defects and dopants in 2D layered transition metal dichalcogenides journal January 2018
Pd 2 Se 3 monolayer: a novel two-dimensional material with excellent electronic, transport, and optical properties journal January 2018
Hole-doping-induced half-metallic ferromagnetism in a highly-air-stable PdSe 2 monolayer under uniaxial stress journal January 2018
A new 2D high-pressure phase of PdSe 2 with high-mobility transport anisotropy for photovoltaic applications journal January 2019
Ferroelastic lattice rotation and band-gap engineering in quasi 2D layered-structure PdSe 2 under uniaxial stress journal January 2019
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Penta-PdX 2 (X = S, Se, Te) monolayers: promising anisotropic thermoelectric materials journal January 2019
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Anomalous interlayer vibrations in strongly coupled layered PdSe 2 journal May 2018
Two-dimensional PdSe 2 -Pd 2 Se 3 junctions can serve as nanowires journal June 2018
Hydrogen-induced ferromagnetism in two-dimensional Pt dichalcogenides journal September 2016
Quasiparticle electronic structure and optical spectra of single-layer and bilayer PdSe 2 : Proximity and defect-induced band gap renormalization journal June 2019
Novel Pd 2 Se 3 Two-Dimensional Phase Driven by Interlayer Fusion in Layered PdSe 2 journal July 2017
3D Imaging and Manipulation of Subsurface Selenium Vacancies in PdSe 2 journal August 2018
Spin Polarization Properties of Pentagonal PdSe2 Induced by 3D Transition-Metal Doping: First-Principles Calculations journal November 2018
Physical Properties and Photovoltaic Application of Semiconducting Pd2Se3 Monolayer journal October 2018
Few-Layer PdSe 2 Sheets: Promising Thermoelectric Materials Driven by High Valley Convergence journal June 2018