(Surface chemistry at the semiconductor/electrolyte interface)

Technical Report · Tue Jan 01 00:00:00 EST 1991

OSTI ID:6250680

Bocarsly, A B

A critical theme over this time period has been understanding the role of intrinsic cyanometalate overlayers in modulating interfacial photoinduced charge transfer processes occurring at the cadmium chalconide/aqueous ferr-ferrocyanide interface. To accomplish this goal, detailed structural and charge transfer studies of (CdFe(CN){sub 6}){sup 2{minus}}/1{sup {minus}1} overlayers generated either intrinsically via photoelectrochemistry at the illuminated CdX/(Fe(CN){sub 6}){sup 4{minus}}/{sup {minus}3} (X=S or Se) interface, or synthesized as chemical modification layers on inert metal electrodes have been undertaken. From these studies, a picture has evolved which directly links charge transfer mediated cation intercalation processes to surface overlayer crystal structure, and overlayer structure to critical charge transfer parameters. In parallel with our photoelectrochemical projects we have also introduced work on the spatially resolved photodeposition of plantinum metal on nonconducting and semiconducting substrates. This chemistry provides new opportunities for the design of semiconductor (or insulator)-metal heterostructures which have applications in solar energy conversion (i.e. Schottky barrier devices, ohmic back contacts, and MIS structure). A project has been initiated in the area of visible light, molecular, charge transfer photochemistry. A summary of review of these projects is presented. 14 refs.

• Research Organization: Princeton Univ., NJ (United States). Dept. of Chemistry
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-85ER13438
• OSTI ID: 6250680
• Report Number(s): DOE/ER/13438-2; ON: DE91018511
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CADMIUM SELENIDES
INTERFACES
CADMIUM SULFIDES
CYANIDES
PHOTOCHEMICAL REACTIONS
IRON COMPOUNDS
DEPOSITION
ELECTROLYTES
PROGRESS REPORT
CADMIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DOCUMENT TYPES
INORGANIC PHOSPHORS
PHOSPHORS
SELENIDES
SELENIUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
400500* - Photochemistry
400400 - Electrochemistry