Electroluminescence of 2,4-bis(4-(2 '-thiophene-yl)phenyl)thiophene in organic light-emitting field-effect transistors
| Autor: | Chihaya Adachi, Takahito Oyamada, Suguru Okuyama, Noriyuki Shimoji, Kazumi Matsushige, Hiroyuki Sasabe |
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| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Organic field-effect transistor
Materials science Physics and Astronomy (miscellaneous) business.industry Transistor Analytical chemistry Electroluminescence law.invention Active layer Organic semiconductor chemistry.chemical_compound chemistry law Thiophene Optoelectronics Field-effect transistor Quantum efficiency business |
| Zdroj: | APPLIED PHYSICS LETTERS. 86(9) |
| ISSN: | 0003-6951 |
| Popis: | We succeeded in observing electroluminescence (EL) of 2,4-bis(4-(2′-thiophene-yl)phenyl)thio-phene (TPTPT) as an active layer in an organic field-effect transistor (OFET). In particular, an OFET with a short channel of dSD=0.8μm demonstrated higher EL efficiency than one with a much longer channel (dSD=9.8μm). We observed a maximum EL quantum efficiency (ηmax) of 6.4×10−3% in the short-channel-length device at an applied source-drain voltage of Vd=−100V and a gate voltage of Vg=−40V. From the OFET characteristics, although the TPTPT layer demonstrated typical p-type operation, the occurrence of EL clearly indicated simultaneous hole and electron injection from the source and drain electronics, respectively, under high Vd and Vg. |
| Databáze: | OpenAIRE |
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