Multicolor nanofiber based organic light-emitting transistors |
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Authors: | Per Baunegaard With Jensen,Jakob Kjelstrup-HansenHorst-Gü nter Rubahn |
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Affiliation: | NanoSYD, Mads Clausen Institute, University of Southern Denmark, Alsion 2, DK-6400 Sønderborg, Denmark |
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Abstract: | Self-assembled, molecular crystalline nanofibers form microscale light-emitters for future nanophotonic applications. Such organic nanofibers exhibit many interesting optoelectronic properties, including polarized photo- and electroluminescence, waveguiding, and emission color tunability. Surface-grown nanofibers from two different molecules are implemented in an organic field-effect transistor platform by a double roll-printing scheme. Roll-printing multiple types of nanofibers onto the same device provides a fast and simple alternative to multilayer devices. The combination of nanofibers made from para-hexaphenylene and 5,5′-di-4-biphenyl-2,2′-bithiophene results in a nanofiber based organic light-emitting transistor (OLET) which emits both blue and green light. A comparison of measured electrical transport and electroluminescence (EL) properties results in a correlation between the threshold voltage for transport and the onset voltage for EL emission. |
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Keywords: | Organic nanofibers Light-emitting transistors Electroluminescence Multicolor |
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