Nanostructured p-Type Semiconductor Electrodes and Photoelectrochemistry of Their Reduction Processes

Nanostructured p-Type Semiconductor Electrodes and Photoelectrochemistry of Their Reduction Processes

This review reports the properties of p-type semiconductors with nanostructured features employed as photocathodes in photoelectrochemical cells (PECs). Light absorption is crucial for the activation of the reduction processes occurring at the p-type electrode either in the pristine or in a modified/sensitized state. Beside thermodynamics, the kinetics of the electron transfer (ET) process from...

Semiconductor electrodes. IV. Electrochemical behavior of n- and p-type silicon electrodes in acetonitrile solutions

The Journal of Physical Chemistry is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Semiconductor electrodes. IV. Electrochemical behavior of nand p-type silicon electrodes in acetonitrile solutions Daniel Laser, and Allen J. Bard J. Phys. Chem., 1976, 80 (5), 459-466• DOI: 10.1021/j100546a008 • Publication Date (Web): 01 May 2002 Downloaded from ht...

Fundamentals of Semiconductor Electrochemistry and Photoelectrochemistry

Semiconductor electrodes. 20. Photogeneration of solvated electrons on p-type gallium arsenide electrodes in liquid ammonia

The electrochemical behavior of p-type GaAs electrodes in liquid ammonia, in the dark and under illumination, has been investigated. Results show that it is possible to photogenerate solvated electrons (es-) from the semiconductor a t an underpotential of about 0.9 V compared to Pt, indicating an extremely negative flatband potential for p-GaAs in N H j compared to that found in other solvent s...

Semiconductor electrodes. 40. Photoassisted hydrogen evolution at poly(benzyl viologen)-coated p-type silicon electrodes

Poly(benzy1 viologen) (PBV) shows two reduction waves in aqueous (at -0.37 and -0.88 V vs. SSCE) or N,Ndimethylformamide (at -0.22 and -0.64 V vs. SSCE) solutions. A film of PBV on the surface of a p-type silicon electrode can be photoreduced at more positive potentials. When metallic Pt is incorporated into the film, the photoproduction of hydrogen occurs with an underpotential of ca. 0.4 V. T...