Muon probes of temperature-dependent charge carrier kinetics in semiconductors
Abstract
We have applied the photoexcited muon spin spectroscopy technique (photo-μSR) to intrinsic germanium with the goal of developing a new method for characterizing excess carrier kinetics in a wide range of semiconductors. Muon spin relaxation rates can be a unique measure of excess carrier density and utilized to investigate carrier dynamics. The obtained carrier lifetime spectrum can be modeled with a simple diffusion equation to determine bulk recombination lifetime and carrier mobility. Temperature dependent studies of these parameters can reveal the recombination and diffusion mechanism.
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