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Donatas Zigmantas. Portrait.

Donatas Zigmantas

Professor

Donatas Zigmantas. Portrait.

Photoluminescence quenching at a polythiophene/C-60 heterojunction

Author

  • M. Theander
  • Arkady Yartsev
  • Donatas Zigmantas
  • Villy Sundström
  • W. Mammo
  • M. R. Andersson
  • O. Inganas

Summary, in English

Quenching of photoluminescence in a substituted polythiophene in the presence of a deposited C-60 layer is studied by steady-state and time-resolved photoluminescence (PL). The steady-state PL is evaluated by con -sidering the interference of the absorbed and emitted electro-optical field in the thin film coupled to exciton diffusion in the conjugated polymer. PL quenching occurs for excitons generated within 5 nm from the heterojunction. A blueshift of the polymer emission spectrum is observed when C-60 is deposited on top of a polymer thin film. The blueshift is shown to be caused by PL quenching before the excitation is transferred to the lowest-energy sites.

Department/s

  • Chemical Physics

Publishing year

2000

Language

English

Pages

12957-12963

Publication/Series

Physical Review B (Condensed Matter and Materials Physics)

Volume

61

Issue

19

Document type

Journal article

Publisher

American Physical Society

Topic

  • Atom and Molecular Physics and Optics

Keywords

  • polymers
  • films
  • photodiodes
  • charge-transfer
  • buckminsterfullerene
  • photoinduced electron-transfer

Status

Published

ISBN/ISSN/Other

  • ISSN: 1098-0121