Modulation of donor-acceptor interface through thermal treatment for efficient bilayer organic solar cells

Dhananjaya Kekuda, Jen Hsien Huang, Kuo Chuan Ho, Chih Wei Chu

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

In this article, we demonstrate the effect of donor-acceptor (D-A) interface on the performance of bilayer organic solar cells. Solution processing was used to develop liquid crystal poly(9, 9′-dioctylfluorene- cobithiophene) (F8T2) polymer films and variable morphology of the films was achieved by varying the annealing temperature. The morphology of the annealed active layers signature a well-aligned nanodomain feature with an interdegitated structure at 200 °C. The devices with bilayer configuration, ITO/PEDOT:PSS/F8T2/C70/Al, have yielded a power conversion efficiency (PCE) of 3.4(±0.2)% under 1 sun incident radiation. We attribute the high PCE to the increased D-A junction interface and balanced charge transport between electron/hole transport layers.

Original languageEnglish
Pages (from-to)2764-2768
Number of pages5
JournalJournal of Physical Chemistry C
Volume114
Issue number6
DOIs
Publication statusPublished - 18-02-2010

Fingerprint

Conversion efficiency
solar cells
Heat treatment
Modulation
modulation
Liquid Crystals
incident radiation
ITO (semiconductors)
Polymer films
Sun
Liquid crystals
Charge transfer
sun
liquid crystals
signatures
Annealing
Radiation
annealing
Electrons
polymers

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Surfaces, Coatings and Films
  • Physical and Theoretical Chemistry

Cite this

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Modulation of donor-acceptor interface through thermal treatment for efficient bilayer organic solar cells. / Kekuda, Dhananjaya; Huang, Jen Hsien; Ho, Kuo Chuan; Chu, Chih Wei.

In: Journal of Physical Chemistry C, Vol. 114, No. 6, 18.02.2010, p. 2764-2768.

Research output: Contribution to journalArticle

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