Surface Photovoltage Analysis of Photoactive Materials2020

Surface photovoltage (SPV) techniques provide information about photoactive materials with respect to charge separation in space. This book aims to share experience in measuring and analyzing SPV signals and addresses researchers and developers interested in learning more about and in applying SPV methods. For this purpose, basics about processes in photoactive materials and principles of SPV measurements are combined with examples from research and development over the last two decades.SPV measurements with Kelvin probes, fixed capacitors, electron beams and photoelectrons are explained. Details are given for continuous, modulated and transient SPV spectroscopy. Simulation principles of SPV signals by random walks are introduced and applied for small systems. Application examples are selected for the characterization of silicon surfaces, gallium arsenide layers, electronic states in colloidal quantum dots, transport phenomena in metal oxides and local charge separation across photocatalytic active crystallites.Contents: PrefaceSymbols and AbbrevationsLight-Induced Charge Separation in Photoactive MaterialsMeasurement Techniques of Surface Photovoltage SignalsPractical Aspects of Surface Photovoltage MeasurementsRandom Walk Simulation of Surface Photovoltage Signals in Small SystemsSelected Applications of Surface Photovoltage TechniquesBibliographyIndexReadership: Young researchers and PhD students interested in the characterization of electronic properties of photoactive materials.Surface Photovoltage Techniques;Photocatalysis;Photovoltage00