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Title: Excitonic Resonant Emission–Absorption of Surface Plasmons in Transition Metal Dichalcogenides for Chip-Level Electronic–Photonic Integrated Circuits

The monolithic integration of electronics and photonics has attracted enormous attention due to its potential applications. A major challenge to this integration is the identification of suitable materials that can emit and absorb light at the same wavelength. In this paper we utilize unique excitonic transitions in WS 2 monolayers and show that WS 2 exhibits a perfect overlap between its absorption and photoluminescence spectra. By coupling WS 2 to Ag nanowires, we then show that WS 2 monolayers are able to excite and absorb surface plasmons of Ag nanowires at the same wavelength of exciton photoluminescence. This resonant absorption by WS 2 is distinguished from that of the ohmic propagation loss of silver nanowires, resulting in a short propagation length of surface plasmons. Our demonstration of resonant optical generation and detection of surface plasmons enables nanoscale optical communication and paves the way for on-chip electronic–photonic integrated circuits.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [4] ;  [3] ;  [3] ;  [5] ;  [2] ;  [1] ;  [4] ;  [3] ;  [2] ;  [6] ;  [7]
  1. Univ. of Electronic Science and Technology of China, Chengdu (China). Inst. of Fundamental and Frontier Sciences; Univ. of Houston, TX (United States). Dept. of Electrical and Computer Engineering
  2. Rice Univ., Houston, TX (United States). Dept. of Materials Science and NanoEngineering
  3. Univ. of Houston, TX (United States). Dept. of Physics. Texas Center for Superconductivity
  4. Baylor Univ., Waco, TX (United States). Dept. of Electrical & Computer Engineering
  5. Univ. of Houston, TX (United States). Dept. of Physics. Texas Center for Superconductivity; Morgan State Univ., Baltimore, MD (United States). Dept. of Physics and Engineering Physics
  6. Univ. of Electronic Science and Technology of China, Chengdu (China). Inst. of Fundamental and Frontier Sciences
  7. Univ. of Houston, TX (United States). Dept. of Electrical and Computer Engineering; Univ. of Electronic Science and Technology of China, Chengdu (China). Inst. of Fundamental and Frontier Sciences
Publication Date:
Grant/Contract Number:
SC0010831; ECCS-1240510; ECCS-1327093; E-1728; C-1716; FA 7000-13-1-0001
Type:
Published Article
Journal Name:
ACS Photonics
Additional Journal Information:
Journal Volume: 3; Journal Issue: 5; Journal ID: ISSN 2330-4022
Publisher:
American Chemical Society (ACS)
Research Org:
Univ. of Houston, TX (United States); Rice Univ., Houston, TX (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF); Robert A. Welch Foundation (United States); Defense Threat Reduction Agency (DTRA) (United States)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 2D transition metal dichalcogenides; chip-scale optical communication; electronic-photonic integrated circuits; resonant exciton-plasmon interaction
OSTI Identifier:
1249954
Alternate Identifier(s):
OSTI ID: 1437115