Photo-switchable Donor-Acceptor (D-A) Dyad Interfacial Self-Assembled Monolayersfor Organic Photovoltaic Cells

Abstract

Several Donor-Acceptor (D-A) dyads were designed and prepared to be used as photo switched interfacial layers to polarize organic solar cells when irradiated to increase the photoconversion efficiencies. Some D-A dyads were designed to be anchored on TiO2 supports to function as Dye Sensitized Solar Cells (DSSCs). The concept of photoswitched interfacial polarization was clearly demonstrated using impedance spectroscopy for several triphenylamine-fullerene dyads, but their performance in photovoltaic devices was not remarkable, likely due to the presence of pinholes in the self-assembled monolayers. Some of the new compounds performed relatively well in DSSCs, some attaining PCEs of 4.7-5.6%.

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Document Details

Document Type
Technical Report
Publication Date
Nov 05, 2015
Accession Number
AD1000739

Entities

People

  • Luis Echegoyen

Organizations

  • University of Texas at El Paso

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Air Force Research Laboratories
  • Cells
  • Charge Transfer
  • Efficiency
  • Electron Acceptors
  • Electron Donors
  • Electronic Mail
  • Fullerenes
  • Materials
  • Monomolecular Films
  • Organic Solar Cells
  • Quartz Crystal Microbalances
  • Self Assembled Monolayers
  • Solar Cells
  • Solar Energy
  • Spectroscopy

Fields of Study

  • Chemistry

Readers

  • Electrochemical Surface Science
  • Solar Photovoltaics and Thermoelectric Devices.
  • Thin Film Deposition Science.