Answers are grounded in this paper and cite their sources.
High Resolution Image Download MS PowerPoint Slide 12CaO·7Al 2 O 3 electride (C12A7:e - ) is a promising material for the cathode of organic light-emitting diodes (OLEDs), because it has a low work function (φ WF = 2.4 eV), comparable to metal potassium, and good chemical/thermal stability in an ambient atmosphere. This study examines interfacial electronic structures between C12A7:e - and tris-8-hydroxyquinoline aluminum (Alq 3 ) by ultraviolet photoelectron spectroscopy, finding that a low electron-injection barrier of 0.6 eV, which is approximately half of the value for the Al/LiF/Alq 3 interface with the lowest injection barrier, is achieved when the interface is formed on the C12A7:e - film surface obtained by using vacuum annealing and subsequent He plasma treatment. This treatment yields little change in the surface chemical composition and retains a low φ WF value (3.1 eV) of C12A7:e - . These results suggest that C12A7:e - has high potential as an efficient electron-injection electrode for OLEDs.
No takes yet. Share an insight, caveat, or question.
Kim et al. (2007) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: