Introduction of oxygen into organic thin films with the aim of suppressing singlet-triplet annihilation

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Abstract

Efficient introduction of oxygen into a solid-state organic film is demonstrated by applying a high oxygen pressure of 200 MPa to the film. The oxygen-introduced film shows strong suppression of singlet-triplet annihilation (STA) because triplet excitons are quenched by oxygen introduced inside the film. It is demonstrated that oxygen molecules are uniformly distributed in the film and that oxygen molecules are left in the film to some extent when the film is in a vacuum. The concentration of oxygen inside the film is calculated to be a very high value on the order of 4.4 × 1020 cm-3.

Original languageEnglish
Pages (from-to)43-46
Number of pages4
JournalChemical Physics Letters
Volume624
DOIs
Publication statusPublished - Mar 16 2015

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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