Title :
Flexible CZTS solar cells on flexible Corning® Willow® Glass substrates
Author :
Chien-Yi Peng ; Dhakal, Tara P. ; Rajbhandari, Pravakar ; Garner, Sean ; Cimo, Patrick ; Lu, Siyu ; Westgate, Charles R.
Author_Institution :
Dept. of Syst. Sci. & Ind. Eng., SUNY at Binghamton, Binghamton, NY, USA
Abstract :
Cu2ZnSnS4 (CZTS) thin film solar cells were successfully fabricated on Corning® Willow® Glass substrates coated with a Molybdenum (Mo) back contact. The CZTS thin films were deposited by using magnetron sputtering followed by annealing in sulfur vapor for 30 minutes. The best conversion efficiency achieved of the flexible CZTS solar cell was 3.08%, with an active area of 0.45cm2. The conversion efficiency was reduced by 20% when the cell was bent to a 50mm radius. The degradation is caused by higher series resistance, which can be due to the degradation of the TCO layer and the damage in the CZTS/Mo interface.
Keywords :
copper compounds; flexible electronics; molybdenum; semiconductor thin films; solar cells; sputter deposition; thin film devices; tin compounds; zinc compounds; Cu2ZnSnS4-Mo; TCO layer degradation; annealing; efficiency 3.08 percent; flexible CZTS solar cells; flexible Corning Willow glass substrates; magnetron sputtering deposition; molybdenum back contact; radius 50 mm; series resistance; sulfur vapor; thin film solar cells; time 30 min; Buffer layers; Glass; Photovoltaic cells; Sputtering; Substrates; Surface morphology; Surface treatment; CZTS; Cu2ZnSnS4; flexible glass; flexible solar cell;
Conference_Titel :
Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th
Conference_Location :
Denver, CO
DOI :
10.1109/PVSC.2014.6924945
