Synthesis and characteristics of spray deposited CuInS2 nanocrystals thin films for photovoltaic applications

- CuInS2 nanocrystals thin films were synthesized by spray pyrolysis technique.
- They are polycrystalline and have chalcopyrite (tetragonal) structure.
- They have high absorption coefficient ∼104 cm−1 and optimum band gap of 1.55 eV.
- They showed excellent opto-electronic properties employable in photovoltaics.