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Type: bookPart × Subject: Scanning methods × WGL Institute: IKZ ×

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    Computational Simulations of the Lateral-Photovoltage-Scanning-Method
    (London [u.a.] : Institute of Physics, 2018) Kayser, S.; Lüdge, A.; Böttcher, K.
    The major task for the Lateral-Photovoltage-Scanning-Method is to detect doping striations and the shape of the solid-liquid-interface of an indirect semiconductor crystal. This method is sensitive to the gradient of the charge carrier density. Attempting to simulate the signal generation of the LPS-Method, we are using a three dimensional Finite Volume approach for solving the van Roosbroeck equations with COMSOL Multiphysics in a silicon sample. We show that the simulated LPS-voltage is directly proportional to the gradient of a given doping distribution, which is also the case for the measured LPS-voltage.