- Tytuł:
- Luminescence tuning of MEH-PPV for organic electronic applications
- Autorzy:
-
Paez-Sierra, B.
Marulanda, D. - Powiązania:
- https://bibliotekanauki.pl/articles/1065036.pdf
- Data publikacji:
- 2016-06
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
72.80.Le
78.55.Hx - Opis:
- In this report, a doped semiconducting ink consisting of a blended poly [2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) with aluminium-tris (8-hydroxychinolin) (Alq₃) and diluted in toluene is formulated. The intentional doping with the electron transport nanoparticle Alq₃ results in an additional band gap state of the hole transport MEH-PPV polymer and reduction of the switch on voltage of the organic LED display. Doping is probed at room temperature with photoluminescence spectroscopy. Photoluminescence results revealed that as the Alq₃ content increases in blends, characteristic peaks of intensities of MEH-PPV are broadened and reduced. In addition, the emission for Alq₃ concentrations between 30% and 60% are featured by a band at 565 nm (2.19 eV) for the lower concentration and consistently blue shifted to 530 nm (2.33 eV) for the higher concentration. This new band at 565 nm (2.19 eV) neither belongs to pure MEH-PPV nor to Alq₃ and evidences charge transfer from the lowest unoccupied molecular orbital of the Alq₃ to the highest occupied molecular orbital of the MEH-PPV.
- Źródło:
-
Acta Physica Polonica A; 2016, 129, 6; 1187-1190
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki