Efficient continuous-flow chemical bath deposition of CdS films as buffer layers for chalcogenide-based solar cells

Author

Tosun, B. Selin ; Abrahamson, Joel T. ; Cheng, C.-C. ; Campbell, Stephen A. ; Aydil, Eray S.

Author_Institution

Dept. of Chem. Eng. & Mater. Sci., Univ. of Minnesota, Minneapolis, MN, USA

fYear

2013

fDate

16-21 June 2013

Firstpage

1192

Lastpage

1194

Abstract

The highest power conversion efficiencies in copper indium gallium diselenide (CIGS) solar cells are achieved when a cadmium sulfide (CdS) buffer layer is deposited on the CIGS absorber through chemical bath deposition (CBD). These CdS buffer layers are also used in emerging kesterite solar cells such as those based on copper zinc tin sulfide/selenide. Herein, we describe a novel continuous-flow chemical bath deposition (CF-CBD) system for efficient utilization of chemicals during CdS film deposition. CdS films are grown on 10-cm-diameter molybdenum-coated silicon wafers to demonstrate the potential of the method to achieve uniform thin CdS films.

Keywords

chemical vapour deposition; molybdenum; solar cells; ternary semiconductors; CF-CBD system; CdS; CuInGaSe; Mo; buffer layers; cadmium sulfide films; chalcogenide-based solar cells; chemical utilization; continuous-flow chemical bath deposition; copper indium gallium diselenide solar cells; copper zinc tin selenide; copper zinc tin sulfide; film deposition; kesterite solar cells; molybdenum-coated silicon wafers; power conversion efficiencies; Chemicals; Films; Photovoltaic cells; Rough surfaces; Substrates; Surface roughness; Surface treatment; CdS; Chemical Bath Deposition; Continuous-Flow Chemical Bath Deposition; Thin Film Photovoltaic Cells;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference (PVSC), 2013 IEEE 39th

Conference_Location

Tampa, FL

Type

conf

DOI

10.1109/PVSC.2013.6744353

Filename

6744353