Fullerene-Grafted Graphene for Efficient Bulk Heterojunction Polymer Photovoltaic Devices

Abstract

A simple lithiation reaction was developed to covalently attach monosubstituted C60 onto graphene nanosheets. Detailed spectroscopic (e.g., Fourier transform infrared, Raman) analyses indicated that C60 molecules were covalently attached onto the graphene surface through monosubstitution. Transmission electron microscopic (TEM) observation revealed that these monosubstituted C60 moieties acted as nucleation centers to promote the formation of C60 aggregates of 5 nm in diameter on the graphene surface. The resultant C60-grafted graphene nanosheets were used as electron acceptors in poly- (3-hexylthiophene)-based bulk heterojunction solar cells to significantly improve the electron transport, and hence the overall device performance, yielding a power conversion efficiency of 1.22%.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 22, 2011
Accession Number
ADA578854

Entities

People

  • Dingshan Yu
  • Kyusoon Park
  • Liming Dai
  • Michael Durstock

Organizations

  • Air Force Research Laboratory

Tags

DTIC Thesaurus Topics

  • Carbon Nanotubes
  • Cells
  • Chemical Engineering
  • Chemical Synthesis
  • Chemistry
  • Composite Materials
  • Electron Acceptors
  • Fullerenes
  • Graphene
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Nanotechnology
  • Physical Chemistry
  • Quantum Dots
  • Solar Cells

Fields of Study

  • Materials science

Readers

  • Nanocomposite Materials Science
  • Organic Chemistry
  • Solar Photovoltaics and Thermoelectric Devices.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene