Synthesis of colloidal nanoscaled copper-indium-gallium-selenide (CIGS) particles for photovoltaic applications

► The colloidal CIGS nanoparticles are synthesized for photovoltaic applications. ► A non-vacuum solvo-thermal method is used for synthesis. ► Due to toxicity of selenium, the process is done without selenization. ► The band gap of the structures can be useful for absorber layers in solar cell.