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Charge-selective DLTS spectra of hole emission and capture. The emission process shows a positive signal while the capture results in negative one. The pulse length and reference time constant were set to and , respectively.
Arrhenius plots for hole capture (a) and emission (b) for different reverse biases.
Dependence of the activation energy (a) and the apparent capture cross section (b) on the reverse bias for emission (circles) and capture (triangles). The inset in the upper left corner schematically displays the band structure.
Temperature-independent apparent capture cross section as function of the inverse electric field (for ).
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