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Conduction band energy diagram for the samples in this study.
(a) Pulsed current-voltage characteristics at for the four samples in the FWHM study. (b) EL spectra of D3294 as a function of temperature at a current density of . [(c)–(f)] EL spectra for different current densities at 180 K for all four samples.
Minimum FWHM of the optical transition as a function of the applied electric field at for the four samples in this study, as labeled in Table I. Inset: minimum FWHM of the optical transition as a function of temperature for the four samples in this study.
Sample number and corresponding doping level and injector barrier thickness.
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