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Transparent thin-film solar cell module and its manufacturing method

A solar cell and light transmittance technology, which is applied in photovoltaic power generation, circuits, electrical components, etc., can solve the problems of reduced light transmittance, insufficient reverse bias treatment, and reduced photoelectric conversion characteristics, and achieve high conversion efficiency. Effect

Inactive Publication Date: 2006-01-18
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if the opening hole is too small, the light transmittance will drop sharply, and if the opening hole is too large, there will be problems in appearance and solar cell power.
[0013] On the contrary, when the light-transmitting opening part in the module is formed as an open groove, since the second electrode layer is removed by the open groove, the second electrode layer of one photoelectric conversion cell is divided into multiple parts, so "reverse bias treatment" " cannot be adequately
[0014] In addition, when forming the light-transmitting openings in the module as opening grooves, in order to form the opening grooves by continuously arranging the light-transmitting openings by laser scribing, it is necessary to make the laser irradiation interval smaller than that formed by laser irradiation. The size of the light-transmitting aperture and the scanning speed of the laser are limited
[0015] In addition, if the ratio of the light-transmitting opening hole to the light-transmitting thin-film solar cell module is increased, a clear image can be obtained, but the photoelectric conversion characteristic is reduced.

Method used

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  • Transparent thin-film solar cell module and its manufacturing method
  • Transparent thin-film solar cell module and its manufacturing method
  • Transparent thin-film solar cell module and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] In Embodiment 1, the opening 18 formed by disposing the independent light-transmitting apertures 8 on a straight line is irradiated from the glass substrate 2 side to the integrated thin-film solar cell 11 with a switching frequency of 1 kHz, a processing position power of 0.30 W, and a scanning speed of Formed by laser under the condition of 200mm / s.

[0080] The diameter 81 of the obtained translucent openings 8 was 170 μm on average, the center-to-center distance 82 of the translucent openings 8 was 200 μm, and the length of the non-processed opaque portions located therebetween was 30 μm on average. As a result, a translucent thin-film solar cell module 1 with an aperture ratio of 11.3% was obtained, and its photoelectric conversion characteristics were: open circuit voltage 88.8V, short circuit current 1.008A, fill factor 0.609, and maximum power 54.5W.

[0081] An image was projected on the light-transmitting thin-film solar cell module 1 of Example 1 from a dista...

Embodiment 2

[0083] In Example 2, the independent light-transmitting openings 8 are arranged on a straight line to form the opening 18 by irradiating the integrated thin-film solar cell 11 from the glass substrate 2 side with a switching frequency of 1 kHz, a processing position power of 0.30 W, and a scanning speed of 300 mm. / s conditions of the laser formed.

[0084] The diameter 81 of the obtained translucent openings 8 was 170 μm on average, the center-to-center pitch 82 of the translucent openings 8 was 300 μm, and the length of the non-processed opaque portions located therebetween was 130 μm on average. As a result, a translucent thin-film solar cell module 1 with an aperture ratio of 7.5% was obtained, and its photoelectric conversion characteristics were: open circuit voltage 89.8V, short circuit current 1.050A, fill factor 0.612, and maximum power 57.7W.

[0085] An image was projected on the light-transmitting thin-film solar cell module 1 of Example 2 from a distance of 2 m us...

Embodiment 3

[0087] In Example 3, the independent light-transmitting openings 8 are arranged on a straight line to form the opening 18 by irradiating the integrated thin-film solar cell 11 from the glass substrate 2 side with a switching frequency of 1 kHz, a processing position power of 0.10 W, and a scanning speed of 100 mm. / s conditions of the laser formed.

[0088] The average diameter 81 of the obtained translucent openings 8 was 80 μm, the center-to-center pitch 82 of the translucent openings 8 was 100 μm, and the length of the non-processed opaque portions located therebetween was 20 μm on average. As a result, a translucent thin-film solar cell module 1 with an aperture ratio of 5.0% was obtained, and its photoelectric conversion characteristics were: open circuit voltage 89.5V, short circuit current 1.062A, fill factor 0.623, and maximum power 59.2W.

[0089] An image was projected on the light-transmitting thin-film solar cell module 1 of Example 3 from a distance of 2 m using a...

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PUM

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Abstract

A transparent thin-film solar-cell module having high output, high light transmittance, and excellent appearance, the module including a plurality of photoelectric conversion cells connected in series, the cells containing a first electrode layer, a semiconductor layer, and a second electrode layer stacked in that order on a main surface of a transparent insulating substrate; and a plurality of light-transmissive aperture holes formed by removing at least the second electrode layer, the light-transmissive aperture holes each having a diameter of 30 mum to 500 mum, the plurality of light-transmissive aperture holes being disposed in a line at a distance between the centers of the light-transmissive aperture holes of 1.01 to 2 times the diameter of each light-transmissive aperture hole, and a method for producing the module.

Description

technical field [0001] The invention relates to a thin-film solar cell module, in particular to a light-transmitting thin-film solar cell module which can be used as a light-transmitting screen through which the background can be recognized through the module. Background technique [0002] Generally, thin-film solar cells are formed to have such image 3 An integrated thin film solar cell 11 with the structure shown. image 3 Among them, the photoelectric conversion cell 10 has a structure in which a first electrode layer 3 , a semiconductor layer 4 , and a second electrode layer 5 are sequentially stacked on an insulating light-transmitting substrate 2 . That is, in the integrated thin film solar cell 11 , light incident from the side of the insulating light-transmitting substrate 2 or the side of the second electrode layer 5 is photoelectrically converted by the photoelectric conversion unit included in the semiconductor layer 4 . [0003] image 3 The shown integrated thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/042
CPCH01L27/1427H01L31/03921Y02E10/50H01L31/0232H01L31/0468H01L31/0445H01L31/18
Inventor 中田年信山岸英雄
Owner KANEKA CORP