Soluble P3HT-Grafted Graphene for Efficient Bilayer-Heterojunction Photovoltaic Devices

Abstract

CH2OH-terminated regioregular poly(3-hexylthiophene) (P3HT) was chemically grafted onto carboxylic groups of graphene oxide (GO) via esterification reaction. The resultant P3HT-grafted GO sheets (G-P3HT) are soluble in common organic solvents, facilitating the structure/property characterization and the device fabrication by solution processing. The covalent linkage and the strong electronic interaction between the P3HT and graphene moieties in G-P3HT were confirmed by spectroscopic analyses and electrochemical measurements. A bilayer photovoltaic device based on the solution-cast G-P3HT/C60 heterostructures showed a 200% increase of the power conversion efficiency (eta = 0.61%) with respect to the P3HT/C60 counterpart under AM 1.5 illumination (100 mW/sq cm).

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2010
Accession Number
ADA575033

Entities

People

  • Dingshan Yu
  • Jong-Beom Baek
  • Liming Dai
  • Michael Durstock
  • Yan Yang

Organizations

  • Ulsan National Institute of Science and Technology

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Band Gaps
  • Carbon Nanotubes
  • Cells
  • Chemical Synthesis
  • Chemistry
  • Fabrication
  • Fullerenes
  • Graphene
  • Heterojunctions
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Measurement
  • Semiconductor Devices
  • Solar Cells
  • Two Dimensional

Fields of Study

  • Materials science

Readers

  • Nanocomposite Materials Science
  • Polymer Science and Technology
  • Solar Photovoltaics and Thermoelectric Devices.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene