| 摘要 |
This invention relates to a composition including (a) a dopant, (b) a first host having at least one unit of Formula I, and (c) a second host compound. Formula I has the structure In Formula I: Ar1, Ar2, and Ar3 are the same or different and are H, D, or aryl groups. At least two of Ar1, Ar2, and Ar3 are aryl and none of Ar1, Ar2, and Ar3 includes an indolocarbazole moiety.
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