Monocrystalline n-FeS//2 (pyrite, E//g approximately equals 0. 95 ev) photoelectrodes with high photocurrent quantum efficiency ( greater than 90%) have been obtained by improvement of the solid-state and interfacial chemistry. During intensive illumination (4-5 W/cm**2), photocurrent densities between 1 and 2 A/cm**2 have been observed for single crystals with high electron mobility ( mu equals 180 cm**2-(V-s)** minus **1 in presence of the I** minus /I//3** minus redox couple. Under illumination, a charge of 623. 000 C/cm**2 was passed without evidence of photocorrosion. The influence of etching treatments, various redox systems, and organic electrolytes on the photochemistry of FeS//2 was investigated.
|Number of pages||10|
|Journal||Journal of the Electrochemical Society|
|Publication status||Published - Jan 1986|
ASJC Scopus subject areas
- Surfaces, Coatings and Films
- Surfaces and Interfaces