Abstract
In this paper a theoretical analysis is presented of the power losses and the contributions to the series resistance which arise from the skin region of thin film solar cells with a grid made up of rectangular meshes. Expressions for the series resistance and the fractional power losses are given in which the sheet resistance, the metal resistance, the contact resistance and shadowing are taken into account. In addition, graphs are presented which enable rapid calculations to be made. The analysis shows that in order to obtain a low power loss the elementary meshes of the grid should be of elongated rectangular shape. Expressions are derived for the optimum geometrical dimensions of the mesh and discussion of these leads to a general criterion for the optimization of any parameter and a self-consistent procedure for the design of the grid.
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