Distorted asymmetric cubic nanostructure of soluble fullerene crystals in efficient polymer: Fullerene solar cells

Youngkyoo Kim, Jenny Nelson, Tong Zhang, Steffan Cook, James R. Durrant, Hwajeong Kim, Jiho Park, Minjung Shin, Sungho Nam, Martin Heeney, Iain McCulloch, Chang Sik Ha, Donal D.C. Bradley

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

Abstract

We found that 1-(3-methoxycarbonyl)propyl-1-phenyl-(6, 6)C61 (PCBM) molecules make a distorted asymmetric body-centered cubic crystal nanostructure In the bulk heterojunction films of reigoregular poly(3- hexylthiophene) and PCBM. The wider angle of distortion in the PCBM nanocrystals was ∼96°, which can be assigned to the influence of the attached side group to the fullerene ball of PCBM to bestow solubility. Atom concentration analysis showed that after thermal annealing the PCBM nanocrystals do preferentially distribute above the layer of P3HT nanocrystals inside devices.

Original languageEnglish (US)
Pages (from-to)2557-2562
Number of pages6
JournalACS Nano
Volume3
Issue number9
DOIs
StatePublished - Sep 22 2009
Externally publishedYes

Keywords

  • Asymmetric nanostructure
  • Field emission transmission electron microscopy
  • Polymer solar cells
  • Raman scattering
  • Soluble fullerene

ASJC Scopus subject areas

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

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