THE PHOTOSTRUCTURAL CHANGES AND REACTIVITY OF CHALCOGENIDE LAYERS

The as-evaporated As-S layers were illuminated and the changes of their dissolution rates in alkaline solutions were studied. The dissolution rates of as-evaporated layers are lower than these ones of illuminated layers. The difference is enhanced by presence of cation-active organic nitrogen compounds or by increased concentration of As in the surface layer. It is supposed that organic compounds are chemisorbed on As-rich parts of the layer and protect it from the dissolution. IR spectra revealed the probable mechanism of sorption by N-containing parts of the organic molecules.