Cheaper, more customisable solar cell materials through a unique innovative production process
Production of thin film solar cell technology has traditionally entailed the use of costly evaporation processes. Nanoco has developed a range of CIGS and CIS (copper indium gallium di-selenide/sulfide, copper indium di-selenide/sulfide) materials that can be deposited much more economically using conventional printing techniques.
The materials are advantageous because nanoparticle synthesis is a ‘bottom up’ approach that enables tuning of elemental ratios and stoichiometry to meet performance requirements.
Nanoco’s PV nanomaterials are highly crystalline, mono-disperse particles, which absorb light across the entire visible spectrum. They are ligand stabilized and readily dispersed into organic solvent to provide nanoparticle ink.
The ink can be utilized with conventional printing techniques that are readily amenable to roll to roll processing. Once printed, the layer is heated to remove the organic capping ligands and sinter the nanoparticles together, resulting in a thin semiconductor film with the crystalline structure and electronic properties required for PV.