Title :
CZTS solar cells fabricated by fast sulfurization of sputtered Sn/Zn/Cu precursors under H2S atmosphere
Author :
Emrani, Amin ; Dhakal, Tara P. ; Chien-Yi Peng ; Westgate, Charles R.
Author_Institution :
Center for Autonomous Solar Power (CASP), SUNY-Binghamton, Vestal, NY, USA
Abstract :
Synthesis of Cu2ZnSnS4 (CZTS) thin films by fast sulfurization of sputtered Sn/Zn/Cu precursors under ambient H2S has been studied. Surface morphology and cross section of the films at different sulfurization processes were investigated by scanning electron microscopy (SEM). To further explore the CZTS layer, the following additional layers were deposited to complete the solar cells: CdS with chemical bath deposition; ZnO and AZO with RF magnetron deposition; and, silver fingers as the front contact as the last layer. The efficiency and characteristics of the thin film solar cells were measured and a detailed comparison is presented. An efficiency of 3.8 % has been achieved.
Keywords :
cadmium compounds; copper compounds; hydrogen compounds; scanning electron microscopy; solar cells; sputtering; surface morphology; tin compounds; zinc compounds; CdS; Cu2ZnSnS4; H2S; RF magnetron deposition; SEM; Sn-Zn-Cu; ZnO; chemical bath deposition; cross section; efficiency 3.8 percent; front contact; scanning electron microscopy; silver fingers; sputtered precursors; sulfurization processes; surface morphology; thin film solar cells; Annealing; Films; Photovoltaic cells; Radio frequency; Resistance; Tin; Zinc; CZTS; Sulfurization; Thin Film Solar Cell;
Conference_Titel :
Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th
Conference_Location :
Denver, CO
DOI :
10.1109/PVSC.2014.6925389
