Solution-processable graphene oxide as an efficient hole transport layer in polymer solar cells

Shao Sian Li, Kun Hua Tu, Chih Cheng Lin, Chun Wei Chen, Manish Chhowalla

Research output: Contribution to journalArticle

566 Citations (Scopus)

Abstract

The utilization of graphene oxide (GO) thin films as the hole transport and electron blocking layer in organic photovoltaics (OPVs) is demonstrated. The incorporation of GO deposited from neutral solutions between the photoactive poly(3-hexylthiophene) (P3HT):phenyl-C61-butyric acid methyl ester (PCBM) layer and the transparent and conducting indium tin oxide (ITO) leads to a decrease in recombination of electrons and holes and leakage currents. This results in a dramatic increase in the OPV efficiencies to values that are comparable to devices fabricated with PEDOT:PSS as the hole transport layer. Our results indicate that GO could be a simple solution-processable alternative to PEDOT:PSS as the effective hole transport and electron blocking layer in OPV and light-emitting diode devices.

Original languageEnglish
Pages (from-to)3169-3174
Number of pages6
JournalACS Nano
Volume4
Issue number6
DOIs
Publication statusPublished - Jun 22 2010

Fingerprint

Graphite
Oxides
Graphene
graphene
solar cells
oxides
Electrons
polymers
Butyric acid
Butyric Acid
Tin oxides
Leakage currents
Indium
Oxide films
electrons
Light emitting diodes
butyric acid
Esters
indium oxides
tin oxides

Keywords

  • Graphene oxide
  • Hole transport layers
  • Organic electronics
  • Organic photovoltaics

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Solution-processable graphene oxide as an efficient hole transport layer in polymer solar cells. / Li, Shao Sian; Tu, Kun Hua; Lin, Chih Cheng; Chen, Chun Wei; Chhowalla, Manish.

In: ACS Nano, Vol. 4, No. 6, 22.06.2010, p. 3169-3174.

Research output: Contribution to journalArticle

Li, Shao Sian ; Tu, Kun Hua ; Lin, Chih Cheng ; Chen, Chun Wei ; Chhowalla, Manish. / Solution-processable graphene oxide as an efficient hole transport layer in polymer solar cells. In: ACS Nano. 2010 ; Vol. 4, No. 6. pp. 3169-3174.
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