Photovoltaic cell

摘要

A photo-voltaic cell has a first and second two-dimensional array of contact points on the first surface, each coupled to a respective one of base and emitter areas in or on the semi-conductor body. Electrically separate first and second conductor structures on the first surface emanate from each contact point, coupled to contact points of the first and second two-dimensional array respectively. The first conductor structure comprises sets of first conductor line branches, the first conductor line branches of each set branching out from a respective one of the contact points of the first two-dimensional array in at least three successive different directions at less than a hundred and eighty degrees to each other. The second conductor structure comprise second conductor line branches in at least three different directions in areas between respective pairs of adjacent non-parallel ones of the first conductor line branches, each second conductor line branch coupled at least to a respective one of the contact points of the second two-dimensional array.

主权项

1. A photo-voltaic cell comprising:
a semi-conductor body having first and second surfaces opposite to each other; first and second two-dimensional arrays of contact points on the first surface, each two-dimensional array of contact points coupled to a respective one of base and emitter areas in or on the semi-conductor body; electrically separate first and second conductor structures, both on the first surface of the semi-conductor body, on respective ones of the base and emitter areas and coupled to contact points of the first and second two-dimensional arrays, respectively; the first and second conductor structures forming a two-dimensionally periodic pattern of contiguous, equally shaped, rectangular or hexagonal unit cells on the first surface of the semi-conductor body, wherein the first conductor structure in each respective one of the unit cells comprises first conductor line branches radiating from the respective one of the contact points of the first two-dimensional array within each respective one of the unit cells in at least three successive different directions at less than a hundred and eighty degrees to each other, and the second conductor structure comprises conductor lines along borders of the respective one of the unit cells, surrounding the first conductor structure in the respective one of the unit cells, as well as second conductor line branches extending from the borders into the respective one of the unit cells, wherein the second conductor line branches of the second conductor structure extend in at least three different directions in areas between adjacent first conductor line branches in the respective one of the unit cells and wherein at least some of the second conductor line branches of the second conductor structure extend to areas between first conductor line branches of the first conductor structure in each respective one of the unit cells that are adjacent to the second conductor line branches of the second conductor structure, andwherein the contact points of the second two-dimensional array are located on the borders of the respective one of the unit cells and are in electrical contact with the conductor lines of the second conductor structure.