Time-resolved photoelectrochemical measurements on surface-modified n- and p-InP electrodes

Journal Article · Sat Nov 01 00:00:00 EST 1986 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2108396· OSTI ID:6543898

Cook, R L; Dempsey, P F; Sammells, A F

Time-resolved photoelectrochemical measurements following illumination with a pulsed laser source have been performed on surface-modified n- and p-InP photoelectrodes. The rate of the initial fast transient photopotential decay was shown to be sensitive to the nature of the surface modification used. The chemisorption of Ru ions onto the n-InP surface reduced the rapid initial decay of the transient photopotential response observed on the unmodified n-InP surface. It is proposed that Ru/sup 3+/ chemisorption may effectively reduce surface trap density at the interface region. For p-InP either unmodified or modified by Co, Rh, Pt, Pb, Rh/Pt, or Co/Pt, the transient photopotential decay exhibited a two segment response. The fast initial decay was found dependent on the previous surface treatment of the p-InP electrode. The second slower decay, however, was found independent of previous surface treatments.

• Research Organization: Eltron Research, Inc., Aurora, IL 60505
• OSTI ID: 6543898
• Journal Information: J. Electrochem. Soc.; (United States), Vol. 133:11
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
INDIUM PHOSPHIDES
ELECTROCHEMISTRY
PHOTOCHEMISTRY
SURFACE TREATMENTS
CHEMISORPTION
COBALT
DECAY
HYDROGEN PRODUCTION
ILLUMINANCE
LASERS
LEAD
N-TYPE CONDUCTORS
P-TYPE CONDUCTORS
PLATINUM
PULSE TECHNIQUES
RHENIUM
RUTHENIUM COMPOUNDS
TIME RESOLUTION
CHEMICAL REACTIONS
CHEMISTRY
ELEMENTS
INDIUM COMPOUNDS
MATERIALS
METALS
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PLATINUM METALS
PNICTIDES
REFRACTORY METAL COMPOUNDS
RESOLUTION
SEMICONDUCTOR MATERIALS
SEPARATION PROCESSES
SORPTION
TIMING PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
360601* - Other Materials- Preparation & Manufacture
400400 - Electrochemistry
400500 - Photochemistry