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

fYear

2014

fDate

8-13 June 2014

Firstpage

2314

Lastpage

2316

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th

Conference_Location

Denver, CO

Type

conf

DOI

10.1109/PVSC.2014.6925389

Filename

6925389