Synthesis and characterization of CIGS ink by hot injection method

Solar cell-based Copper Indium Gallium Selenide (CIGS) is one type of solar cell that has high efficiency. However, the most commonly used vapor deposition technique to deposit CIGS is a technique that requires high environmental control and cost. The research aims to produce thin-film CIGS with hot injection methods. Variations of the Decantation 4, 6 and 8 times were performed to acquire the pure CIGS nanoparticles carried out to study their influence on phases, crystal structures, morphologies, and optical properties at the same time to the methods of deposition of the Doctor Blade. CIGS Film is defied over the ITO substrate with the Doctor blade technique. The XRD diffraction pattern shows the structure of tetragonal crystals. CIGS grain size increases with the number of oleylamine solvent decantation processes. SEM results indicate that CIGS can be deposited evenly throughout the substrate surface. CIGS with decantation process as much as 8 times easiest to be deposited with the best properties to be applied as easy and cheap CIGS solar cell.