Cu2SnS3 is an attractive material for photovoltaic applications due to its inherent properties, and because is formed only by earth abundant elements. In this work we present the preparation of Cu2SnS3 layers by a sequential process based in the DC-sputtering of metallic precursors followed by a reactive annealing.
We analyze the impact of metallic composition (Cu/Sn ratio) and order (Cu/Sn or Sn/Cu), as well as thermal treatment conditions (one-step vs two-steps annealing, temperature and S partial vapor pressure). In a first optimization we report a device with 2.4% efficiency, discussing the efficiency limitations and challenges to increase this value.
Acebo, L., Becerril-Romero, I., Sylla, D., Sánchez, Y., Oliva, F., Izquierdo-Roca, V., Pistor, P. and Saucedo, E., 2016, November. Development of Cu 2 SnS 3 based solar cells by a sequential process. In Photovoltaic Specialists Conference (PVSC), 2016 IEEE 43rd (pp. 0394-0398). IEEE.
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