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ALESSANDRO BUSACCA

Parametrical study of multilayer structures for CIGS solar cells

  • Autori: Busacca, A.; Rocca, V.; Curcio, L.; Parisi, A.; Cino, A.; Pernice, R.; Ando', A.; Adamo, G.; Tomasino, A.; Palmisano, G.; Stivala, S.; Caruso, M.; Cipriani, G.; LA CASCIA, D.; DI DIO, V.; RICCO GALLUZZO, G.; Miceli, R.
  • Anno di pubblicazione: 2014
  • Tipologia: Proceedings (TIPOLOGIA NON ATTIVA)
  • OA Link: http://hdl.handle.net/10447/105297

Abstract

In this paper, a numerical analysis of relevant electrical parameters of multilayer structures for CIGS-based solar cells was carried out, employing the simulation software wxAMPS. In particular, we have focused on thin film cells having a ZnO:Al/ZnO/CdS/CIGS structure with a Molybdenum back contact. The aim of this work is to establish good theoretical reference values for an ongoing experimental activity, where our technology of choice is the single-step electrodeposition. In detail, we have analyzed how the main electrical properties change with the bang gap and the thickness of the absorber layer, for such a type of solar cell structure. Our results show that both efficiency and fill factor strongly depend on the energy gap. Instead, the absorber thickness plays a role up to a few microns, after which the cell parameters remain almost constant. As expected, the theoretical peak efficiency was found for a band gap value of 1.40 eV, corresponding to a Ga/(In+Ga) ratio of 0.66.