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US09359549B2 Organic electroluminescent materials and devices 有权
有机电致发光材料和器件

Organic electroluminescent materials and devices
Abstract:
Compounds comprising a metal complex having novel ligands are provided. In particular, the compound is an iridium complex comprising novel aza DBX ligands. The compounds may be used in organic light emitting devices, particularly as emitting dopants, providing improved efficiency, low operating voltage, and long lifetime.
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