Solar cells
AssigneesHon Hai Precision Industry Co., Ltd., Tsinghua University
InventorsYUAN-HAO JIN, QUN-QING LI, SHOU-SHAN FAN
Life of this patent
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Abstract
A solar cell is provided. The solar cell includes a silicon substrate, a back electrode, a doped silicon layer, and an upper electrode. The silicon substrate includes a first surface, a second surface, and a number of three-dimensional nano-structures located on the first surface. The three-dimensional nano-structures are located on the second surface. The three-dimensional nano-structures are linear protruding structures that are spaced from each other, and a cross section of each linear protruding structure is an arc. The doped silicon layer is attached to the three-dimensional nano-structures and the second surface between the three-dimensional nano-structures.
Claims18
A solar cell, comprising:
- a silicon substrate comprising a first surface, a second surface, and a plurality of three-dimensional nano-structures located on the second surface;
- wherein the plurality of three-dimensional nano-structures are linear protruding structures that are spaced from each other, and a cross section of each linear protruding structure is an arc;
- a back electrode located on and Ohmic connected to the first surface of the silicon substrate;
- a doped silicon layer attached to the plurality of three-dimensional nano-structures and covering the second surface of the silicon substrate that is between the plurality of three-dimensional nano-structures;
- and
- an upper electrode located on at least part of the doped silicon layer.
The solar cell of claim 12, wherein a thickness of the metal layer ranges from about 2 nanometers to about 200 nanometers.
A solar cell, comprising:
- a silicon substrate comprising a body and a plurality of three-dimensional nano-structures, wherein the body comprises a first surface and a second surface, the plurality of three-dimensional nano-structures are located on the second surface and spaced from each other;
- the plurality of three-dimensional nano-structures are linear protruding structures, and a cross section of each linear protruding structure is an semicircle;
- a back electrode located on and Ohmic connected to the first surface of the silicon substrate;
- a doped silicon layer attached to the plurality of three-dimensional nano-structures and covering the second surface that is between the plurality of three-dimensional nano-structures;
- and
- an upper electrode located on at least part of the doped silicon layer.
The solar cell of claim 16, wherein the body and the plurality of three-dimensional nano-structures are an integrated structure.
The solar cell of claim 16, wherein the plurality of three-dimensional nano-structures is substantially equidistantly arranged and arranged along a same direction.
Dependencies are inferred from the claim text.