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Chemical structures and WOLED architectures.
Absorption and photoluminescence spectra of a TPyPA film on a quartz substrate. Inset: an energy level diagram for the device.
EL spectra of device A (a) and device B (b). The insets show the CIE coordinates against luminance. coordinate (filled symbols) and coordinate (empty symbols).
PL spectra of BPhen (▵), TPyPA (엯), and TPyPA:BPhen (▾) films, respectively.
(a) Current density-voltage-luminance and (b) current efficiency–current density–power efficiency characteristics of device A (◻, ∎) and device B (엯, ●), respectively.
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