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Dye-sensitized solar cell

A solar cell, pigment sensitization technology, applied in circuits, capacitors, photovoltaic power generation and other directions, can solve the problem of reduced light utilization efficiency, and achieve the effect of improving power generation efficiency

Inactive Publication Date: 2010-12-22
FUJIKURA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the dye-sensitized solar cell, due to the reasons listed in (1) and (2) below, the light incident on the wiring part is absorbed in the battery cell and turned into heat, so there is a loss of energy. The big disadvantage of the reduction of light utilization efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0089] The present invention is specifically described below through examples. In addition, the present invention is not limited to these examples.

[0090] (Production of dye-sensitized solar cells)

[0091] A glass substrate (140 mm square, with an FTO film formed on the surface as a transparent conductive film) was prepared, and a silver circuit was formed in a grid pattern on the FTO film by screen printing. The circuit shape was designed to have a circuit width of 300 μm and a film thickness of 10 μm. As a silver paste for printing, the volume resistivity after sintering is 3×10 -6 The silver paste for printing of Ωcm is dried at 130°C after printing, and the silver circuit is sintered at a maximum temperature of 510°C to form a circuit.

[0092] Next, in order to completely cover the silver circuit and overlap the circuit formation part, a low-melting point glass paste was applied as a first wiring protection material to form a printed coating film of glass. The desi...

Embodiment 1

[0099] In Example 1, a diffusion film having an isotropic diffusion characteristic (transmittance rate) was attached to a position opposite to the silver circuit on the substrate surface on the window electrode side, that is, to the surface of the substrate on the window electrode side opposite to the silver circuit. 85%, diffusion angle 60°). In this case, the photoelectric conversion efficiency was 5.31%. The rate of improvement in conversion efficiency relative to Comparative Example 1 was about 2.5%.

Embodiment 2

[0101] In Example 2, a diffusion ink for a light guide plate was applied to a position facing the silver circuit on the substrate surface on the window side to form a diffusion film. In this case, the photoelectric conversion efficiency was 5.30%. The rate of improvement in conversion efficiency relative to Comparative Example 1 was about 2.3%.

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Abstract

Disclosed is a dye-sensitized solar cell wherein power generation efficiency is improved by suppressing light absorption of a wiring portion. Specifically disclosed is a dye-sensitized solar cell (10) comprising at least a first electrode substrate (11) having, on one side thereof, a porous oxide semiconductor layer (15) loaded with a dye and a wiring portion (19) arranged in a region adjacent to the porous oxide semiconductor layer (15); a second electrode substrate (16) so arranged as to face the porous oxide semiconductor layer (15) of the first electrode substrate (11); and an electrolyte layer (17) arranged at least partially between the first electrode substrate (11) and the second electrode substrate (16). At least one of the first electrode substrate (11), the wiring portion (19) and the second electrode substrate (16) is provided with an incident light direction-changing member (18) for changing the direction of incident light, at a position corresponding to the wiring portion.

Description

technical field [0001] The present invention relates to a dye-sensitized solar cell having a wiring portion adjacent to a porous oxide semiconductor layer. Background technique [0002] Dye-sensitized solar cells use electrolytes that corrode metals. Therefore, when providing current-collecting wiring for reducing the collector impedance of the battery cell, a wiring protective layer for protecting the current-collecting wiring from corrosion by the electrolytic solution is required. However, if the wiring protective layer is applied to both sides of the current collecting wiring, the thickness of the wiring protective layer is increased for the wiring width, and the overall width of the wiring tends to increase. [0003] Conventional silicon-based solar cells do not require a wiring protective layer because they do not use an electrolyte solution. Therefore, the surface of the current collecting wiring has metallic luster from the exposed metal surface. Therefore, even i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M14/00H01L31/04
CPCH01G9/2059Y02E10/542H01G9/209H01G9/2031H01L51/445H10K30/83
Inventor 冈田显一松井浩志北村隆之
Owner FUJIKURA LTD