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- Ohisa, Satoru; Kagami, Sho; Pu, Yong-Jin; Chiba, Takayuki; Kido, Junji
- ACS Applied Materials & Interfaces 2016 v.8 no.32 pp. 20946-20954
- air; baking; electric power; molybdenum; nitrogen; solubility; solvents; surface roughness; temperature
- ... We report hole-injection layers (HILs) comprising a heteropoly acid containing MoO₃ units, phosphomolybdic acid (PMA), in organic light-emitting devices (OLEDs). PMA possesses outstanding properties, such as high solubility in organic solvents, very low surface roughness in the film state, high transparency in the visible region, and an appropriate work function (WF), that make it suitable for HIL ...