Control of Mose2 formation in hydrazine-free solution-processed CIS/CIGS thin film solar cells

摘要

layer formed after selenization was dramatically reduced when the barrier layer was present and the corresponding device exhibited a power conversion efficiency (PCE) of 8.2%. More importantly, the application of the barrier layer as an intermediate layer within the Mo back contact allows for longer, or even multiple selenization steps. A longer or a multiple selenization was shown to improve the absorber grain growth and consequently result in higher PCEs.