Algorithm for Random Walk Simulation of Modulated Surface Photovoltage Signals in Nanostructured Systems with Localized States

详细信息    查看全文

• 作者：Steffen Fengler ; Thomas Dittrich
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：August 11, 2016
• 年：2016
• 卷：120
• 期：31
• 页码：17777-17783
• 全文大小：375K
• 年卷期：0
• ISSN：1932-7455

文摘

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.