Abstract. This paper provides a literature review of the Scaps-1D modeling program. Numerical analysis in SCAPS is a mandatory approach to assess the feasibility of the proposed physical structure and its performance. The limitation of CAPS is that it does not work well in multi-connection simulation environments (pnp, npn, tandem). This program calculates energy ranges, concentrations and currents at a given operating point, J-V characteristics, AC characteristics, spectral characteristics and can build a circuit of up to 7 semiconductor layers.

Key words: SCAPS-1D, solar cell, semiconductor, tandem solar.