Facile solvothermal way to synthesize CuIn0.7Ga0.3S2 nanocrystals and their application in low-cost photovoltaic device

Facile solvothermal way to synthesize quaternary CuIn 0.7 Ga 0.3 S 2 (CIGS) semiconductor nanocrystals has been reported here. X-ray powder diffraction, energy dispersive X-ray spectrometry, transmission electron microscopy , X-Ray photoelectron spectroscopy and UV–Vis spectrometry were used to characterize CIGS nanocrystals. As-synthesized CIGS nanocrystals ink was used to prepare absorber layer. After selenization and device fabrication , the CIGS solar cells exhibited 0.36% power conversion efficiency under 1.5 AM illumination.