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Spectral response of the Schottky photodiodes for unpolarized light. The inset shows the dark IV characteristics of the photodiodes.
Spectral response as a function of light polarization for the Schottky photodiodes grown on r-plane sapphire. The inset shows the R⊥/R|| ratio.
Spectral response as a function of light polarization for the Schottky photodiode grown on a-plane ZnO. The inset shows the R⊥/R|| ratio.
Figures of merit for the different polarization-sensitive photodetectors.
Calculated exciton transition energies and oscillator strengths (f) for the QWs. T 1, T 2, and T 3 denote the excitonic transitions between the conduction and the A, B, and C valence bands, respectively. Ei − Ei −1 denotes the energy difference between one given excitonic transition and the previous one in the table.
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