Fabrication of Flexible CIGS Solar Cell on Stainless Steel Substrate by co-Evaporation Process
Silicone dioxide (SiO2) layer as an electrical insulator and diffusion barrier was deposited on a flexible stainless steel substrate by plasma enhanced CVD process. And we deposited Mo/Na-doped Mo bi-layer back contact on the oxide layer in order to supply Na into the CIGS absorber. Then we deposited CIGS layer by three-stage process using elemental co-evaporation method and completed the solar cell fabrication. Without antireflection coating, the best CIGS solar cell on the stainless steel showed the conversion efficiency of 10.57 % with Jsc = 33.38 mA/cm2 and Voc = 0.519 V and FF = 0.61 for an active area of 0.45 cm2.
Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park
M. S. Kim et al., "Fabrication of Flexible CIGS Solar Cell on Stainless Steel Substrate by co-Evaporation Process", Solid State Phenomena, Vols. 124-126, pp. 73-76, 2007