Details

Autor(en) / Beteiligte

• Hung, Wen-Yi
• Lin, Chi-Yen
• Cheng, Tsang-Lung
• Yang, Shih-Wei
• Chaskar, Atul
• Fan, Gang-Lun
• Wong, Ken-Tsung
• Chao, Teng-Chih
• Tseng, Mei-Rurng

Titel

A new thermally crosslinkable hole injection material for OLEDs

Ist Teil von

• Organic electronics, 2012-11, Vol.13 (11), p.2508-2515

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2012

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] ► We reported a new thermally crosslinkable hole injection material for OLEDs. ► VB-DATA derived from m-MTDATA with styryl (vinylbenzene) moiety. ► After thermal polymerization, VB-DATA films displayed surface roughness of 0.84nm. ► The replacement of PEDOT:PSS by VB-DATA showed comparable OLEDs performance. ► All solution-processed multilayer OLEDs via crosslinkable approach is possible. A new thermal cross-linkable hole injection monomer VB-DATA derived from famous m-MTDATA as core peripherally functionalized with styryl (vinylbenzene) moiety as polymerizable group has been synthesized and characterized. The propensity of VB-DATA thin films formation is sensitive to the nature of solvent, in which the dichloroethane solution gave smooth polymeric thin films with surface roughness of RMS ∼0.84nm by spin-casting followed by thermal treatment at 190°C. The introduction of oxygen-linked vinylbenzene group shifted HOMO energy level of VB-DATA to −5.1eV along with good nondispersive hole transport property (μh∼10–6cm2V–1s–1) makes it suitable for serving as HIL on top of ITO electrode. The replacement of PEDOT:PSS by thermally cross-linked VB-DATA films showed comparable OLEDs performance, giving more flexibility on material selection for future OLEDs applications, especially solution-processed ones.