Abstract
The main aim of this project was to demonstrate the formation of viable Cu2SnSnS4 (CZTS) films from the sulfurisation of electrodeposited stacked films of Cu, Sn and Zn. The development of an electrodeposition route for ‘stacked elemental layer’ (SEL) precursor was described in Chap. 2. The route allows relatively good control of precursor composition, and compositional uniformity was achieved by the use of a rotating disc electrode system. Mo|Cu|Sn|Cu|Zn stacked films were produced as CZTS precursors, and were converted to CZTS films by sulfurisation in a rapid thermal processing system (RTP), which was described in Chap. 3. The use of rapid thermal processing has enabled some time-resolved studies of film formation to be carried out, and in Chap. 3 a model was proposed for film formation when fast heating rates are employed.
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