Non-vacuum processing of CIGS solar cells on flexible polymeric substrates

摘要

Using an ink based non-vacuum process, CIGS solar cells were successfully fabricated on a flexible polymeric 'Upilex' substrate. A thin foil (0.001") of 'Upilex' was metallized by sputter deposition of 0.4 /spl mu/m thick layer of Mo and CIGS solar cells were fabricated on it. 'Upilex' foil along with various device layers on it, withstood the fabrication conditions of ISET's process in which the maximum temperature was raised to 500/spl deg/C. A ClGS solar cell with AMO efficiency of 8.0% and specific power density <1280 watts/Kg was fabricated. With further process optimization we expect to achieve AMO of 10% and power density <1500 watts/Kg in CIGS solar cells.