| 摘要 |
PURPOSE:To enable the production of the solar cell of high conversion efficiency through simple processes by a method wherein a plurality of unit cells are connected to one another by heating superpositions of the clear electrodes of unit cells with the back electrodes of adjacent unit cells. CONSTITUTION:A plurality of light incidence side clear electrodes 2 are prepared on one surface of a photo-permeable glass substrate 1. Next, an amorphous Si semiconductor layer 3 is formed over the substrate 1. Then, the back electrode 4 of a unit cell is formed in such a manner that one edge of its long side is superposed on the clear electrode 2 of an adjacent unit cell via layer 3. A part of the metal in the electrode 4 is thermally diffused 7 to the layer 3 by irradiating the superposition 6 of the electrodes 4 and 2 with laser 5. The electrodes 2 and 4 are brought into a short circuit in such a manner, and a solar cell of plurality series connection is obtained. Thereby, the titled element of high conversion efficiency can be produced by a small number of processes. |
