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Solar cell panel

A technology of solar panels and solar cells, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems such as low power generation efficiency

Inactive Publication Date: 2007-06-06
TOHOKU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the techniques shown in Patent Documents 1 and 2, there is a problem that the power generation efficiency is low in principle.

Method used

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  • Solar cell panel
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Embodiment 1

[0028] A first embodiment of the present invention will be described using FIGS. 1( a ) and ( b ). 1( a ) and ( b ) are explanatory diagrams showing an overview of a solar cell panel 10 as a first embodiment of the present invention and its operating principle. The illustrated solar cell panel 10 has a solar cell 12 using amorphous silicon, and a transparent plate 11 having a thickness of about 5 mm attached to the solar cell 12 . The transparent plate 11 is made of Pyrex (registered trademark) glass, and two kinds of ytterbium (Yb) and erbium (Er) are doped as atoms of the lanthanoid series (including ionized atoms).

[0029] Ytterbium (Yb) has a property of absorbing photons of infrared light around a wavelength of 1000 nm, and when irradiated with sunlight L1, it is excited by the infrared component contained therein to a metastable state. Since this energy level is relatively long, photons of infrared light can be further absorbed before being deactivated to the lowest en...

Embodiment 2

[0032] A second embodiment of the solar cell panel of the present invention will be described using FIGS. 2( a ) and ( b ). FIG. 2( a ) is a perspective view showing an overview of the solar battery panel 20 , and FIG. 2( b ) is a diagram explaining the operating principle thereof. The illustrated solar cell panel 20 is composed of a solar cell 22 using single crystal silicon, and a transparent plate 21 attached to the solar cell 22 . The illustrated transparent plate 21 is made of soda glass, and is doped with samarium (Sm) and europium (Eu) as two kinds of atoms of the lanthanoid series.

[0033] Here, the principle of the solar cell panel of this embodiment will be described. When sunlight L1 is irradiated on the transparent plate 21, energetic electrons are generated by samarium (Sm) that absorbs infrared light contained in the sunlight L1, thereby, Visible light L2 is generated when europium (Eu) recombines with electrons. Thereby, the solar cell panel 20 can be observe...

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PUM

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Abstract

Generally, solar cell panels are black, being inferior in design. An object of the invention is to provide a transparent plate which develops color without lowering power generation efficiency; and a solar cell panel which uses such transparent plate. A solar cell panel according to the invention has a construction such that the solar cell is covered by a transparent plate which is characterized by absorbing infrared light and emitting visible light. Since the transparent plate develops color by using infrared light which does not contribute to power generation, there is obtained a solar cell panel which is superior in the viewpoint of decoration without lowering the power generation efficiency of solar cells.

Description

technical field [0001] The present invention relates to the structure of a solar battery panel and a transparent plate used in the solar battery panel. Background technique [0002] Generally, since a solar cell panel made of amorphous silicon or single crystal silicon absorbs sunlight well, the power generation efficiency (that is, the ratio of the power generated by the solar cell to the total power irradiated by sunlight) sometimes exceeds 20%. However, solar panels made of amorphous silicon or single crystal silicon are generally black as a whole and are restricted in design, so when they are arranged on the roof of ordinary houses where people can see them, their appearance will be impaired. Aesthetics, as a result, have been a cause of delays in the popularity of solar panels. [0003] On the other hand, various attempts to color solar panels have been proposed. For example, JP-A-60-148174 (hereinafter referred to as Patent Document 1) discloses a solar cell provided...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/042
CPCY02E10/52H01L31/02168Y02E10/50H01L31/055
Inventor 大见忠弘森本明大武久究
Owner TOHOKU UNIV