Photoelectric conversion module and electronic device using same

Patent metadata

Field	Value
Publication number	US-2016372272-A1
Application number	US-201415123419-A
Country	US
Kind code	A1
Filing date	Dec 5, 2014
Priority date	Mar 5, 2014
Publication date	Dec 22, 2016
Grant date	—

Abstract

A photoelectric conversion module includes a substrate and a plurality of photoelectric conversion cells connected in series on the substrate and satisfies the relations of the following formulas (I) to (III):
J sc ≧20 mA/cm 2 ,  (I)

I sc /X ≦2 mA/cm, and  (II)

P in ×R s ×Y 2 ×10 −4 <0.07.  (III)

First claim

1 . A photoelectric conversion module comprising
a substrate and a plurality of photoelectric conversion cells connected in series on the substrate, wherein each of the photoelectric conversion cells includes a first conductive layer, a second conductive layer facing the first conductive layer with a spacing therebetween, a photoelectric conversion layer on the first conductive layer, and a carrier-transport material between the first conductive layer and the second conductive layer, wherein the photoelectric conversion layer includes a porous semiconductor layer and a photosensitizer absorbed to the porous semiconductor layer, wherein a short-circuit current density J sc obtained by irradiating the photoelectric conversion cells with pseudo sunlight with an energy density of 100 mW/cm 2 satisfies the relation of the following formula (I):
J sc ≧20 mA/cm 2   (I),

wherein a short-circuit current I sc obtained by irradiating the photoelectric conversion cells with pseudo sunlight with an energy density of 1 mW/cm 2 and a length X of the porous semiconductor layer in a direction perpendicular to a series connection direction of the photoelectric conversion cells satisfy the relation of the following formula (II):
I sc /X≦ 2 mA/cm  (II), and

wherein an intensity P in [mW/cm 2 ] of light incident on the photoelectric conversion module, a total sheet resistance R s [Ω/square] of the first conductive layer and the second conductive layer in the photoelectric conversion cells, and a length Y [cm] of the porous semiconductor layer in the series connection direction of the photoelectric conversion cells satisfy the relation of the following formula (III):
P in ×R s ×Y 2 ×10 −4 <0.07.  (III)

2 . (canceled)

3 . (canceled)

4 . (canceled)

5 . (canceled)

6 . The photoelectric conversion module according to claim 1 , wherein the second conductive layer contains at least one selected from the group consisting of titanium, tungsten, gold, silver, copper, aluminum, and nickel.

7 . The photoelectric conversion module according to claim 1 , wherein the second conductive layer has a thickness of from 0.02 μm to 5 μm inclusive.

8 . The photoelectric conversion module according to claim 1 , wherein the second conductive layer contains titanium, and
the second conductive layer has a thickness of from 0.3 μm to 2 μm inclusive.

9 . The photoelectric conversion module according to claim 1 , wherein the R s is 20 Ω/square or less.

10 . The photoelectric conversion module according to claim 1 , wherein the Y is less than 8 cm.

11 . The photoelectric conversion module according to claim 1 , wherein the Y is from 0.5 cm to 7.5 cm inclusive.

12 . The photoelectric conversion module according to claim 1 , wherein the first conductive layer has a thickness of from 0.02 μm to 5 μm inclusive.

13 . The photoelectric conversion module according to claim 1 , wherein the porous semiconductor layer has a surface area of from 10 m 2 /g to 200 m 2 /g inclusive.

14 . The photoelectric conversion module according to claim 1 , further comprising a porous insulating layer disposed between the second conductive layer and the photoelectric conversion layer and placed on the photoelectric conversion layer.

15 . The photoelectric conversion module according to claim 1 , further comprising
a porous insulating layer on the photoelectric conversion layer and a catalyst layer on the porous insulating layer, wherein the second conductive layer is disposed on the catalyst layer.

16 . An electronic device comprising, as a power source unit, the photoelectric conversion module according to claim 1 .

17 . A sensor comprising, as a power source unit, the photoelectric conversion module according to claim 1 .

Assignees

• Sharp Kk

Inventors

• Ichinose Hirokazu
• Yamanaka Ryohsuke
• Fukui Atsushi
• Komiya Ryoichi
• Watanabe Yuki

Classifications

• H01G9/2081 Primary

  Serial interconnection of cells · CPC title

• H01G9/2031

  comprising titanium oxide, e.g. TiO2 (H01G9/2036 takes precedence) · CPC title

• Y02E10/542

  Dye sensitized solar cells · CPC title