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(Color online) Quantum efficiency vs doped samples measured at for top-sided illuminated measurements. The increase in QE is due to the background concentration going from type to type. The inset shows the specific detectivity.
(Color online) Modeled current density of the reference sample and beryllium doped samples taking into account the diffusion, generation recombination, trap-assisted tunneling, and band-to-band tunneling. The reference sample is modeled as and the doped samples are treated as .
(Color online) Experimentally determined dynamical impedance at zero bias voltage at . The dashed lines represent the diffusion, , and band-to-band tunneling components. The solid line is the cumulative theoretical value of the product.
Summary of measurements at .
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