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Integrated thin film solar cell and manufacturing method thereof
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A solar cell and thin film technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problem of reducing the total output of solar cells in series
Inactive Publication Date: 2013-11-06
SHARP KK
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[0007] When a string is formed on the substrate, if there is a leakage part in any thin-film photoelectric conversion element (battery unit) in the string, the total output of the string (the entire solar cell) will be reduced
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Embodiment 1
[0048] figure 1 is a plan view illustrating an integrated thin film solar cell according to Example 1 of the present invention. figure 2 (a) is along the figure 1 A cross-sectional view of the line I-I, figure 2 (b) is when viewed from the series connection direction figure 1 Side view of the integrated thin-film solar cell in figure 2 (c) is along figure 1 Sectional view of line II-II. also, image 3 (a) is along the figure 1 A cross-sectional view of the line III-III, image 3 (b) is a graphic illustration figure 1 A plan view of the vicinity of the string separation trench of an integrated thin-film solar cell.
[0049] exist Figure 1-Figure 3 , the arrow E represents the flow direction of the current (current direction), and the simple description "upstream" or "downstream" in this specification means the upstream or downstream of the current direction.
[0050] exist Figure 1-Figure 3 Among them, the arrow A indicates the direction of series connection...
Embodiment 2
[0158] Figure 4 (a) is a partial cross-sectional view illustrating the vicinity of the string separation trench of the integrated thin film solar cell according to Example 2, Figure 4 (b) is a partial plan view illustrating the vicinity of the string separation trench of the integrated thin film solar cell according to Example 2.
[0159] The difference between Embodiment 2 and Embodiment 1 includes the downstream end portion 8a of the first groove 8a of the tandem separation groove 8 2 Arranged in the region of the element separation groove 9 adjacent to the downstream side battery cell 5b, the upstream side end portion 8b of the second groove 8b 1 is arranged in the area of the upstream side battery cell 5a, and the entire first groove 8a is arranged in the inner area of the second groove 8b.
[0160] The rest of the structure in Example 2 is similar to that in Example 1.
[0161] As described in Embodiment 1, in the present invention, the first electrode layers 2 o...
Embodiment 3
[0166] Figure 5 (a) is a partial cross-sectional view illustrating the vicinity of the string separation trench of the integrated thin film solar cell in the series connection direction according to Example 3, Figure 5 (b) is a partial plan view illustrating the vicinity of the string separation trench of the integrated thin film solar cell according to Example 3.
[0167] The difference between Embodiment 3 and Embodiment 1 includes the upstream end portion 8a of the first groove 8a of the tandem separation groove 8 1 Arranged in the region of the upstream side battery cell 5a, the downstream side end portion 8a of the first groove 8a 2 is arranged in the area of the downstream side battery cell 5b, and the entire first groove 8a is arranged in the inner area of the second groove 8b.
[0168] The rest of the structure in Example 3 is similar to that in Example 1.
[0169] In addition, with this structure, the first electrode layers 2 of the plurality of battery cells...
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Abstract
An integrated thin-film solar battery, comprising: a plurality of strings having a plurality of thin-film photoelectric conversion elements formed on a transparent insulating substrate, the thin-film photoelectric conversion elements being electrically connected in series to each other, wherein the thin-film photoelectric conversion elements have a first transparent electrode layer laminated on the transparent insulating substrate, a photoelectric conversion layer laminated on the first electrode layer and a second electrode layer laminated on the photoelectric conversion layer, the plurality of strings are arranged in parallel on the same transparent insulating substrate in a direction perpendicular to the series-connecting direction across one or more string separating grooves extending to the series-connecting direction, the string separating groove includes a first groove formed by removing the first electrode layer, and a second groove formed by removing the photoelectric conversion layer and the second electrode layer with a width wider than that of the first groove, the thin-film photoelectric conversion elements on any position in the series-connecting direction are parallel-connection elements some of which are removed by the string separating groove and residual ones of which are connected integrally so as to extend to the direction perpendicular to the series-connecting direction, and the parallel-connection elements electrically connect the plurality of strings in parallel.
Description
technical field [0001] The present invention relates to an integrated thin film solar cell and a method of manufacturing the same. Background technique [0002] As a conventional technique, for example, in Patent Document 1 figure 2 Disclosed is an integrated thin film solar cell (hereinafter sometimes simply referred to as a solar cell) having a string (battery string) in which a plurality of thin film photoelectric conversion elements are electrically connected in series. [0003] In a conventional technique, a transparent electrode layer, a photoelectric conversion layer, and a metal electrode layer are sequentially laminated on a transparent insulating substrate to form a thin-film photoelectric conversion element. [0004] In such a solar cell, the thin film photoelectric conversion elements on both sides in the series connection direction are parallel elements connected to the thin film photoelectric conversion elements adjacent in the direction perpendicular to the s...
Claims
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Application Information
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