Beatrice Ch. D. Salert, Hartmut Krueger, Sergey A. Bagnich, Thomas Unger, Frank Jaiser, Mahmoud Al-Sa'di, Dieter Neher, Anna Hayer and Thomas Eberle New polymer matrix system for phosphorescent organic light-emitting diodes and the role of the small molecular co-host Journal of Polymer Science Part A: Polymer Chemistry 51
A new matrix system for phosphorescent OLEDs based on an electron transporting component attached to an inert polymer backbone, an electronically neutral co-host, and a phosphorescent dye that serves as both emitter and hole conductor are presented. The inert co-host is used either as small molecules or covalently connected to the same chain as the electron-transporting host. It is found that to get highest device performance the co-host must present in the matrix in small molecular phase.
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