Metal wrap through silicon heterojunction solar cells and first made minimodules
conference paper
In this paper we present the successful integration of a silicon heterojunction (HJ) solar cell with metal wrap through architecture (MWT) and foil based- back contact module technology. With this contribution we show a record cell efficiency of 20.3% achieved using commercial n-type Cz 6 inch wafers and demonstrate an encapsulated cell efficiency of 19.6% achieved on a 2×2 mini-module. To our knowledge this is the first time that module results of MWT-HJ architecture have been reported. In this studies , we propose a method to increase the solar cell performance up to 21% together with a 50% cost of ownership reduction of the front silver metal including via and conductive adhesive. This is possible solely by the optimization of the front metal grid. MWT-HJ is a fully low-temperature integrated cell and module concept compatible also with thinner wafers.
-
TNO Identifier
822028
Publisher
ECN
Collation
6 p.
Place of publication
Petten
Pages
6 p.
Files