Solar cell module and solar generator

Patent metadata

Field	Value
Publication number	US-9306089-B2
Application number	US-201113882790-A
Country	US
Kind code	B2
Filing date	Oct 27, 2011
Priority date	Nov 11, 2010
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A solar cell module according to the invention includes a solar cell; a light guiding portion including a first fluorescent substance having a faint color and that emits light having low luminosity factor, the light guiding portion absorbing part of light incident from the outside using the first fluorescent substance and transmitting a first light beam emitted from the first fluorescent substance toward the solar cell; and a converter disposed between the light guiding portion and the solar cell, the converter converting the first light beam incident from the light guiding portion into a second light beam to which the solar cell has higher spectral sensitivity than to the first light beam and causing the second light beam to be incident on the solar cell. Thus, when the solar cell module is used as a window, the solar cell module is highly transparent and highly efficiently generates power.

First claim

The invention claimed is:

1. A solar cell module comprising:
a solar cell;
a light guiding portion including a first fluorescent substance, the light guiding portion absorbing part of incident light using the first fluorescent substance and transmitting a first light beam emitted from the first fluorescent substance toward the solar cell; and
a converter disposed between the light guiding portion and the solar cell, the converter converting the first light beam incident from the light guiding portion into a second light beam and causing the second light beam to be incident on the solar cell, the solar cell having higher spectral sensitivity to the second light beam than to the first light beam, wherein
the light guiding portion is formed by dispersing the first fluorescent substance within a center portion of a transparent light-guiding member, and
the converter is formed by dispersing a second fluorescent substance only within an outer peripheral portion of the transparent light-guiding member, the second fluorescent substance absorbing the first light beam and emitting the second light beam.

2. The solar cell module according to claim 1 , wherein the converter includes a plurality of types of fluorescent substances, and the first light beam incident on the converter is converted into the second light beam stepwise using the plurality of types of fluorescent substances.

3. The solar cell module according to claim 1 , wherein reflective layers that reflect the second light beam are disposed on surfaces of the converter other than a surface that faces the solar cell.

4. A solar generator comprising the solar cell module according to claim 1 .

5. A solar cell module comprising:
a transparent light-guiding member;
a first fluorescent substance dispersed within a center portion of the transparent light-guiding member; and
a second fluorescent substance dispersed only within an outer peripheral portion of the transparent light-guiding member, the second fluorescent substance having a first emission spectrum peak at a first wavelength range, the first emission spectrum peak being longer than a second emission spectrum peak, the first fluorescent substance having the second emission spectrum peak.

6. The solar cell module according to claim 5 , wherein the first wavelength range is from 600 nm to 900 nm.

Assignees

• Yui Hideomi
• Uchida Hideki
• Maeda Tsuyoshi
• Sharp Kk

Inventors

• Yui Hideomi
• Uchida Hideki
• Maeda Tsuyoshi

Classifications

• H10F77/488

  Reflecting light-concentrating means, e.g. parabolic mirrors or concentrators using total internal reflection · CPC title

• H10F77/45 Primary

  Wavelength conversion means, e.g. by using luminescent material, fluorescent concentrators or up-conversion arrangements · CPC title

• H10F77/496 Primary

  Luminescent members, e.g. fluorescent sheets (wavelength conversion means for photovoltaic cells H10F77/45) · CPC title

• Y02E10/52

  PV systems with concentrators · CPC title

• H01L31/02322 Primary

  Electricity · mapped topic