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Solution-Processable Electron Injection Materials for Organic Light-Emitting Devices
Takayuki Chiba, Yong-Jin Pu and Junji Kido, J. Mater. Chem. C in press.
Abstract
Solution-processed In this highlight, we focus on the recent progress of the state-of-the-art solution-processable electron injection materials: i) alkali metal-containing compounds, ii) n-type semiconducting metal oxides, iii) π-conjugated ionic polymers, and iv) nonionic polymers. These materials are soluble in water, alcohol, or a water-alcohol mixture solvent and can be formed to a film by a solution process. We discuss essential characteristics of these electron injection materials and the performance of the solution-processed OLEDs made with them.