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Algorithm for Random Walk Simulation of Modulated Surface Photovoltage Signals in Nanostructured Systems with Localized States
- Fengler, Steffen, Dittrich, Thomas
- The Journal of Physical Chemistry C 2016 v.120 no.31 pp. 17777-17783
- algorithms, physical chemistry, temperature
- The simulation of modulated surface photovoltage (SPV) signals has been demonstrated for nanostructured systems with localized electronic states by using a random walk approach. The proposed algorithm was adapted to a real measurement time regime and allows for the investigation of in-phase and phase-shifted by 90° SPV signals and of frequency, phase angle–amplitude, and temperature dependencies of modulated SPV signals. The simulation of modulated SPV signals can give a strong impact for the interpretation of SPV spectra concerning localized electronic states and related phenomena in nanostructured systems.