Abstract
The depth distribution profiles of elements near the interface of Cu2S–CdS heterojunction formed on the polar (0001) and (0001̄) surfaces of CdS were investigated by Auger electron spectroscopy. The diffusion of Cu into CdS was found to be easier on the CdS (0001̄) surface than on the (0001) surface. Further, the variation of the chemical shift in the dN(E)/dE Auger signal of S (LMM) is shown to occur between Cu2S and CdS.