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curves of (●) the top- and (엯) the control bottom-emissive devices. The inset shows the plot of the luminous efficiency vs current density.
Normalized EL spectra of (엯) the control bottom-emissive device and the top-emissive devices made of Ag overlayers of various thicknesses: glass/Ag:, , (∎) , and (▴) . The inset displays (▵) the simulated EL emission and the (▴) measured EL spectrum of the top-emissive device with the cathode structure, .
EL spectra of the top-emissive device, with the cathode structure , measured at viewing angles of (●) 0°, (⊠) 30°, and (×) 60° from the surface normal. The inset shows the device configuration of the top-emissive PLEDs here in this study.
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