Optical properties and temperature dependence of energy gap of transition-metal dichalcogenides

Sushant S. Rassay, Weitao Tang, Nuggehalli M. Ravindra

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Transition-metal dichalcogenides (TMDCs) have emerged as a new class of semiconductors that display distinctive properties at monolayer thickness. Their optical properties are of particular interest and importance for applications in optoelectronics as light emitters, detectors, and photovoltaic devices. We report the determination and analyses of the spectral properties of MoS2, MoSe2, WS2 and WSe2 at monolayer and bulk in the range of 1.5-3.0 eV by MATLAB simulations. Simulations of the optical properties of these materials on silicon, gold and fused silica substrates are also presented. The temperature dependence of the energy gap for monolayer TMDCs is discussed.

Original languageEnglish (US)
Title of host publicationMaterials Science and Technology Conference and Exhibition 2016, MS and T 2016
PublisherAssociation for Iron and Steel Technology, AISTECH
Pages1153-1164
Number of pages12
ISBN (Electronic)9781510833142
StatePublished - Jan 1 2016
EventMaterials Science and Technology Conference and Exhibition 2016, MS and T 2016 - Salt Lake City, United States
Duration: Oct 23 2016Oct 27 2016

Publication series

NameMaterials Science and Technology Conference and Exhibition 2016, MS and T 2016
Volume2

Other

OtherMaterials Science and Technology Conference and Exhibition 2016, MS and T 2016
CountryUnited States
CitySalt Lake City
Period10/23/1610/27/16

All Science Journal Classification (ASJC) codes

  • Materials Science (miscellaneous)
  • Mechanics of Materials
  • Energy Engineering and Power Technology

Keywords

  • Band gap
  • Molybdenum disulfide
  • Monolayer
  • Optical properties
  • Transition-metal dichalcogenides (TMDCs)
  • Tungsten diselenide

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