Nishikant Sonwalkar, SunDensity Inc., Burlington, MA
The use of magnetron sputtering for in-line production of photonic coatings is growing in the glass industry for managing photonics. SunDensity is involved with the research and development of photonic smart coatings using a multi-layer stack of dielectric transparent metal oxides and metal nanoparticles for down-conversion of the white light spectrum for photovoltaic applications. Using KJL PVD75 magnetron sputtering and E-beam evaporation platform, we have demonstrated the efficacy of creating photonic smart coatings (PSC). We will present our preliminary results related to wavelength shifting and enhancement of density of photons in the target band for the increased power output of the solar cells by creating a quantum match between photon energy and the bandgap of the PV cells. The early results indicated an increase in the power output of the c-Si solar cells by 20%. The use of the KJL platform was critical in the establishment of the layered stack by carefully creating a submicron size coating using magnetron sputtering.