Details

Autor(en) / Beteiligte

• Huseynova, Gunel
• Xu, Yong
• Nketia Yawson, Benjamin
• Shin, Eul-Yong
• Lee, Mi Jung
• Noh, Yong-Young

Titel

P-type doped ambipolar polymer transistors by direct charge transfer from a cationic organic dye Pyronin B ferric chloride

Ist Teil von

• Organic electronics, 2016-12, Vol.39, p.229-235

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We report a facile way to improve organic field effect transistor (OFET) performance based on low concentration doping of diketopyrrolopyrrole-thieno[3,2-b]thiophene (DPPT-TT) solution by an organic cationic dye, Pyronin B (PyB). DPPT-TT OFETs show significantly high field effect mobilities (up to 3.5 cm2 V−1 s−1) by optimizing the doping ratio and solvent selection. The devices also exhibit better on/off ratio by suppression of n-channel characteristics. Ultraviolet photoelectron spectroscopy and UV–vis absorption spectra revealed efficient p-type doping in PyB doped DPPT-TT films, which was confirmed by the Fermi level shifting toward the highest occupied molecular orbital and red shift of the absorption spectrum. [Display omitted] •An organic cationic dye, Pyronin B (PyB) is proposed as a p-type dopant for OFETs.•The performance of DPPT-TT OFETs are significantly improved by PyB solution-processed doping.•Doping effects strongly depend on the dopant concentration and the used solvent.