PHOTOELECTROCHEMICAL PROPERTIES OF ANATASE AND RUTILE FILMS PREPARED BY THE SOL-GEL METHOD

Photoelectrochemical properties of titanium dioxide films in the anata se and rutile form which were prepared by the sol-gel method were inve stigated. The effects of oxygen defects on photoelectrochemical proper ties were investigated by varying the reduction conditions such as atm osphere, temperature, and time. It is shown that (i) oxygen defects pl ay a key role in photocurrent characteristics, (ii) oxygen defects dra stically affect electroluminescence characteristics, and (iii) the ele ctrolumineseence intensity GAMMA(x), infrared band, which peaked at 84 0 nm, is indicative of the degree of reduction.