SOLAR CELL
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United States of America Patent
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app pub date -
Jul 5, 2017
filing date -
Jul 5, 2016
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Abstract
A solar cell includes a semiconductor substrate, a bus-bar electrode, a plurality of finger electrodes, and a heavily doped layer. The semiconductor substrate has a surface. The bus-bar electrode is on the surface of the semiconductor substrate and extending along a first direction. The finger electrodes are on the surface of the semiconductor substrate and extending along a second direction. One of two ends of each of the finger electrodes is connected to the bus-bar electrode. An angle created by the first direction and the second direction is less than 180 degrees. The heavily doped layer is formed on the surface of the semiconductor substrate and includes a first portion and a plurality of second portions. The first portion is extending along the first direction. Each of the second portions is extending from the first portion along the second direction and beneath the corresponding finger electrode.
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