Thermal control of near‐infrared and visible electroluminescence in alkyl‐phenyl substituted polythiophenes
1994 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 65, no 12, 1489-1491 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
American Institute of Physics (AIP) , 1994. Vol. 65, no 12, 1489-1491 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-74938DOI: 10.1063/1.112021ISI: A1994PG92500005OAI: oai:DiVA.org:liu-74938DiVA: diva2:497053