Surface recombination at semiconductor electrodes

Photoelectrochemical Properties of LaFeO3 Nanoparticles

“…As the electrode potential becomes more negative, the magnitude of the photocurrent responses increases, in agreement with the data shown in Figure 2 B. From a phenomenological point of view, the photocurrent decay and overshoot upon light interruption resemble the behavior observed for single‐crystal photoelectrodes in the presence of interfacial recombination 6a. 15 However, a closer examination of the photocurrent transient reveals that the magnitude of the photocurrent decay in the on‐transient is significantly larger than photoanodic responses in the off‐transient.…”

Theory of the impedance of charge transfer via surface states in dye-sensitized solar cells

“…It was recognized that surface states play a dominant role in electrochemical reactions at extrinsic crystalline semiconductor electrodes [2][3][4][5]. In a DSC, low doped anatase-TiO 2 nanoparticles ca.…”

“…We have presented calculations of the effect of surface states in DSC in steady state [16][17][18], and we have also characterized quite generally the dynamics of traps in terms of Impedance Spectroscopy (IS) [19,20]. However, the combination of trapping and charge transfer in surface states introduces additional features in the dynamics [2][3][4][5]. IS of charge transfer via surface states has been mentioned sometimes in the DSC field but the traps dynamics was not explicitly described [21,22].…”

SiC: A Photocathode for Water Splitting and Hydrogen Storage

“…There is a competition between diffusion and gas evolution. Hydrogen absorption has been previously reported for p-type semiconductor electrodes (GaP [22] and Si [23] ) under illumination. However, the amount of hydrogen stored was many orders of magnitude lower (< 10 14 cm À2 ) than that found for SiC in the present study.…”