In order to improve the efficiency of c-Si and mc-Si solar cells, Metal Wrap Though (MWT) architecture isinvestigated. In this paper we implement TCAD numerical simulations to analyze the performance of MWT cellswith a point busbar or a continuous busbar at the back side. The two topologies of MWT cells are compared in bothilluminated and dark conditions, aiming at understanding and comparing the resistive and recombination losses. Theimpact of the separation region is also studied, highlighting the degradation effect on the Fill Factor (FF) and on theefficiency in the two structures. We observe that the separation region dimension leads to a higher degradation ofefficiency in case of continuous busbar.
A comparative study of MWT architectures by means of numerical simulations
De Rose R.;Crupi F.;Lanuzza M.;
2013-01-01
Abstract
In order to improve the efficiency of c-Si and mc-Si solar cells, Metal Wrap Though (MWT) architecture isinvestigated. In this paper we implement TCAD numerical simulations to analyze the performance of MWT cellswith a point busbar or a continuous busbar at the back side. The two topologies of MWT cells are compared in bothilluminated and dark conditions, aiming at understanding and comparing the resistive and recombination losses. Theimpact of the separation region is also studied, highlighting the degradation effect on the Fill Factor (FF) and on theefficiency in the two structures. We observe that the separation region dimension leads to a higher degradation ofefficiency in case of continuous busbar.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
