Title :
Influence of H2S annealing and buffer layer on CZTS solar cells sputtered from a quaternary compound target
Author :
Bras, Patrice ; Sterner, Jan
Author_Institution :
Midsummer AB, Järfälla, Sweden
Abstract :
Sputtering Cu2ZnSnS4 absorbers from a quaternary compound target has not been deeply investigated yet although it is a fast process that could be adapted to an industrial scale. We propose a new approach based on an in-line vacuum system for the complete device. The effects of H2S annealing parameters as well as buffer type are investigated. We present a 4.2% efficiency device based on stainless steel substrate.
Keywords :
annealing; buffer layers; copper compounds; hydrogen compounds; solar cells; sputtering; substrates; sulphur compounds; tin compounds; zinc compounds; CZTS solar cells; buffer layer; copper zinc tin sulfide absorber sputtering; copper zinc tin sulfide solar cells; hydrogen sulfide annealing; in-line vacuum system; quaternary compound target; stainless steel substrate; Abstracts; Annealing; Films; Sputtering; Substrates; Tin; Vacuum systems; CZTS; Compound target; Cu2ZnSnS4; Photovoltaic device; SEM; Sputtering; Stainless steel substrate; XRD;
Conference_Titel :
Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th
Conference_Location :
Denver, CO
DOI :
10.1109/PVSC.2014.6924924
