Chalcopyrite-type ternaries as photoelectrodes in wet solar cells

The performance of photoelectrochemical cells, containing n-CuInX₂ (X=S, Se) semiconductor electrodes, has been studied as a function of solution composition and temperature. Significant differences with cells using CdSe or CdIn₂Se₄ electrodes are found, also in terms of output stability. These results, together with surface analyses, suggest the occurrence of binary chalcogenides on the electrode surfaces, which seems to influence the behaviour of these cells favourably