One-step electrodeposited CuInSe2 thin films studied by Raman spectroscopy

Abstract CuInSe2 thin films one-step electrodeposited under different conditions were studied by MicroRaman spectroscopy to identify and quantify the individual phases present in the films. From the analysis of the Raman spectra, the main ternary phase (CuInSe2) and elementary selenium Se0 were clearly identified. Specific chemical etches confirm the presence of elementary selenium Se0 and copper selenide binary phases CuxSe in selenium rich film. The amounts of these two phases were evaluated from X-ray Fluorescence measurements and confirmed using phase selective chemical treatments.