Unlock instant, AI-driven research and patent intelligence for your innovation.

Photovoltaic components

A technology of photovoltaic elements and photoelectric conversion layers, applied in photovoltaic power generation, electrical components, electric solid-state devices, etc., can solve the problems of low photoelectric conversion efficiency and durability of organic solar cells, and achieve high photoelectric conversion efficiency and excellent durability Effect

Active Publication Date: 2019-06-28
TORAY IND INC
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, compared with conventional solar cells using inorganic semiconductors, organic solar cells using conjugated polymers and the like have low photoelectric conversion efficiency and durability, so they have not been put into practical use.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Photovoltaic components
  • Photovoltaic components
  • Photovoltaic components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0100] Hereinafter, based on an Example, this invention is demonstrated more concretely. It should be noted that the present invention is not limited to the following examples. In addition, among the compounds used in Examples and the like, the abbreviations for use are shown below.

[0101] Isc: short circuit current density

[0102]Voc: open circuit voltage

[0103] η: Photoelectric conversion efficiency

[0104] ITO: indium tin oxide

[0105] A-1: A compound represented by the following formula

[0106] A-2: A compound represented by the following formula

[0107] [chemical 7]

[0108]

[0109]

[0110] [70] PCBM: methyl phenyl C71 butyrate.

[0111] The photoelectric conversion efficiency in each example and comparative example was calculated|required by the following formula.

[0112] η(%)=Isc(mA / cm 2 )×Voc(V)×FF / irradiation light intensity (mW / cm 2 )×100

[0113] FF=JVmax / (Isc(mA / cm 2 )×Voc(V))

[0114] JVmax (mW / cm 2 ) is the product value of the cur...

Synthetic example 1

[0118] Compound A-1 was synthesized by the method shown in the following formula.

[0119] [chemical 8]

[0120] .

[0121] 4.3 g of compound (1-a) (manufactured by Tokyo Chemical Industry Co., Ltd.) and 10 g of bromine (manufactured by Wako Pure Chemical Industries, Ltd.) were added to 48% hydrobromic acid (manufactured by Wako Pure Chemical Industries, Ltd.) 150ml, stirred at 120°C for 3 hours. After cooling to room temperature, the precipitated solid was filtered through a glass filter, and washed with 1000 ml of water and 100 ml of acetone. The obtained solid was vacuum-dried at 60° C. to obtain 6.72 g of compound (1-b).

[0122] Add 5.56 g of compound (1-b) to 180 ml of ethanol (manufactured by Wako Pure Chemical Industries, Ltd.), and add NaBH at 5°C under a nitrogen atmosphere 4 (manufactured by Wako Pure Chemical Industries, Ltd.) 13.2 g, and stirred at room temperature for 2 days. After distilling off the solvent, 500 ml of water was added, and the solid was co...

Synthetic example 2

[0129] Compound A-2 was synthesized by the method shown in the following formula. It should be noted that the compound (2-i) described in Synthesis Example 2 was synthesized with reference to the method described in Jana Luobza American Chemical Society (Journal of the American Chemical Society), 2009, Volume 131, pages 7792-7799, and compound (2 -p) Synthesized by referring to the method described in Angebante Chemiinternasionaru Edison (Angewandte Chemie International Edition), 2011, Vol. 50, pp. 9697-9702.

[0130] [chemical 9]

[0131] .

[0132] 38 g (0.27 mol) of methyl 2-thiophenecarboxylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 108 g (1.34 mol) of chloromethyl methyl ether (manufactured by Tokyo Chemical Industry Co., Ltd.) were stirred at 0° C. After adding 125 g (0.48 mol) of tin tetrachloride (manufactured by Wako Pure Chemical Industries, Ltd.) over 1 hour, it stirred at room temperature for 8 hours. After the stirring was completed, 100 ml o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

Provided is a photovoltaic element excellent in durability realized by an electron extraction layer in which an inorganic compound and a donating group are more firmly bonded. [Solution] A photovoltaic element including at least a cathode, an electron extraction layer, a photoelectric conversion layer, and an anode in this order, wherein the electron extraction layer includes an inorganic compound (A) and an organic compound (B) having a power-feeding group and a bonding group ), and has an inorganic / organic composite structure in which at least a part of the organic compound (B) and the inorganic compound (A) are bonded via the bonding group.

Description

technical field [0001] The present invention relates to photovoltaic elements. Background technique [0002] Solar cells are attracting attention as effective and environmentally friendly energy sources for today's increasingly profound energy problems. Currently, inorganic materials such as single crystal silicon, polycrystalline silicon, amorphous silicon, and compound semiconductors are used as semiconductor materials for photovoltaic elements of solar cells. However, solar cells made of inorganic semiconductors are expensive compared to thermal power generation and other power generation methods, so they have not been widely used in ordinary households. The reason for the high cost is mainly due to the process of forming a semiconductor thin film under vacuum and high temperature. Therefore, organic solar cells using organic semiconductors such as conjugated polymers, organic crystals, and organic dyes have been studied as semiconductor materials for which simplificati...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/46H10K99/00
CPCY02E10/549H10K85/215H10K85/113H10K85/151H10K30/353H10K2102/00H10K30/50C08G61/126C08G2261/91C08G2261/3241C08G2261/3223C08G2261/312C08G2261/3142C08G2261/124C08G2261/1412C08G2261/18C08G2261/3243
Inventor 山本修平下村悟北泽大辅
Owner TORAY IND INC