Thermal control of near-infrared and visible electroluminescence in alkyl-phenyl substituted polythiophenes
Berggren, M. ; Gustafsson, G. ; Inganäs, O. ; Andersson, M. R. ; Wennerström, O. ; Hjertberg, T.
Woodbury, NY : American Institute of Physics (AIP)
Published 1994
Woodbury, NY : American Institute of Physics (AIP)
Published 1994
| ISSN: |
1077-3118
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
We report electroluminescence from a regioregular alkyl-phenyl substituted polythiophene. The polymer film exists in two forms, giving widely different optical absorption, as well as photoluminescence and electroluminescence spectra. In the low-bandgap form, we observe high emission intensity centered at 1.55 eV (800 nm), well into the infrared, while the high-bandgap form gives a maximum at 1.85 eV (670 nm). The conversion from the high-bandgap form to the low-bandgap form can be done by thermal treatment of the polymer light emitting diodes.
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| Type of Medium: |
Electronic Resource
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| URL: |