“…The major advantages of the CISCuT process are high throughput with sulphurisation/heat treatment time of about 6-7 s, continuous roll-to-roll manufacturing, cheap flexible copper substrate, electrochemically deposited In precursor and, as a consequence, potential low fabrication costs [1,2]. It turned out, that the very short heat treatment time, not achievable with any other contemporary CIS technology, makes it possible to create a spontaneous layered structure (so-called "as grown" cell, in this paper referred to as "absorber") during a single sulphurisation/heat treatment step, with properties suitable for light energy conversion.…”