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Chemical structures of blue host and dopant materials and the device architectures.
EL spectra of different BD-1 concentrations in types I and II devices.
PL spectra of BD-1 in different solvents.
Current and external quantum efficiency vs current density of type II device with 8% BD-1 doped in -ADN with pure -ADN as buffer layer. Inset: curve of the device.
Type I device performances at the current density of .
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