Abstract
We report on transistors and light-emitting diodes using a conjugated polymer consisting of alternated segments of fluorene units and low-band gap donor-acceptor-donor (D-A-D) units. The D-A-D segment includes two electron-donating thiophene rings combined with a thiadiazolo-quinoxaline unit, which is electron withdrawing to its nature. The resulting polymer is conjugated and has a band gap of around 1.27 eV. Here we present the corresponding electro- and photoluminescence spectra, which both peak at approximately 1 micrometer. Single layer light-emitting diodes demonstrated external quantum efficiencies from 0.03% to 0.05%. The polymer was employed as active material in thin film transistors, a field-effect mobility of 0.003 cm2/Vs and current on/off ratio of 104 were achieved at ambient atmosphere.
Original language | English |
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Title of host publication | Proceedings Volume 5522, Organic Field-Effect Transistors III |
Number of pages | 7 |
DOIs | |
Publication status | Published - 18 Oct 2004 |
Externally published | Yes |
Event | Organic Field-Effect Transistors III: Optical Science and Technology - Denver, United States Duration: 3 Aug 2004 → … Conference number: 49th |
Conference
Conference | Organic Field-Effect Transistors III |
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Country/Territory | United States |
City | Denver |
Period | 3/08/04 → … |
Keywords
- transistors
- Light Emitting Diodes
- polymer light-emitting diodes