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Organic photoelectric conversion element

An organic photoelectric conversion and component technology, applied in electrical components, organic semiconductor devices, photovoltaic power generation, etc., can solve problems such as low photoelectric conversion efficiency

Inactive Publication Date: 2012-09-12
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with inorganic photoelectric conversion elements, organic photoelectric conversion elements have the advantages of being able to easily fabricate organic active layers at room temperature by coating methods, etc., and are light in weight. However, on the other hand, there is a problem of low photoelectric conversion efficiency.

Method used

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  • Organic photoelectric conversion element
  • Organic photoelectric conversion element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] (Transparent substrate—transparent anode—formation of hole transport layer)

[0090] A transparent glass substrate having a transparent electrode (anode) formed by patterning ITO having a film thickness of about 150 nm deposited by a sputtering method on the surface was prepared. This glass substrate was washed with an organic solvent, an alkali detergent, and ultrapure water, and dried. Use a UV ozone device (UV-O 3 Device, manufactured by Technovision, model "UV-312") for UV-O 3 deal with.

[0091] A suspension of poly(3,4)ethylenedioxythiophene / polystyrenesulfonic acid (manufactured by HC Starck V-Tech, trade name "Bytron P TP AI 4083") was prepared as a material for the hole transport layer, and the suspension The solution was filtered through a 0.5 mm diameter filter. The filtered suspension was formed into a film with a thickness of 70 nm by spin coating on the surface side of the substrate having the transparent electrode. The obtained film was dried at 200°...

Embodiment 2

[0104] (Transparent substrate—transparent anode—formation of hole transport layer)

[0105] A transparent glass substrate having a transparent electrode (anode) formed by patterning ITO having a film thickness of about 150 nm deposited by a sputtering method on the surface was prepared. This glass substrate was washed with an organic solvent, alkaline detergent, and ultrapure water, and dried. UV ozone device (UV-O 3 Device, manufactured by Technovision, model "UV-312") for UV-O 3 deal with.

[0106]A suspension of poly(3,4)ethylenedioxythiophene / polystyrenesulfonic acid (manufactured by HC Starck V-Tech, trade name "Bytron P TP AI 4083") was prepared as a material for the hole transport layer. The turbid liquid was filtered through a 0.5 mm diameter filter. The filtered suspension was formed into a film with a thickness of 70 nm by spin coating on the surface side of the substrate having the transparent electrode. The obtained film was dried at 200° C. for 10 minutes on ...

Embodiment 3

[0117] (Transparent substrate—transparent anode—formation of hole transport layer)

[0118] A transparent glass substrate having a transparent electrode (anode) formed by patterning ITO having a film thickness of about 150 nm deposited by a sputtering method on the surface was prepared. This glass substrate was washed with an organic solvent, alkaline detergent, and ultrapure water, and dried. UV ozone device (UV-O 3 Device, manufactured by Technovision, model "UV-312") for UV-O 3 deal with.

[0119] A suspension of poly(3,4)ethylenedioxythiophene / polystyrenesulfonic acid (manufactured by HC Starck V-Tech, trade name "Bytron P TP AI 4083") was prepared as a material for the hole transport layer, and the suspension The solution was filtered through a 0.5 mm diameter filter. The filtered suspension was formed into a film with a thickness of 70 nm by spin coating on the surface side of the substrate having the transparent electrode. The obtained film was dried at 200° C. for...

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Abstract

Disclosed is an organic photoelectric conversion element having high photoelectric conversion efficiency. The organic photoelectric conversion element comprises an anode, a cathode, and an organic active layer provided between the anode and the cathode, wherein the organic active layer contains a multi-exciton generator. As the multi-exciton generator, a compound semiconductor containing at least one element selected from Cu, In, Ga, Se, S, Te, Zn and Cd is used. Preferably, the compound semiconductor has multiple energy levels in the energy gap thereof. Also preferably, the compound semiconductor is a nano-sized granular material preferably having a p-type semiconductor attached on the surface thereof.

Description

technical field [0001] The present invention relates to an organic photoelectric conversion element used in photoelectric devices such as solar cells and photosensors. Background technique [0002] An organic photoelectric conversion element is an element including a pair of electrodes including an anode and a cathode, and an organic active layer provided between the pair of electrodes. In the organic photoelectric conversion element, any one of the electrodes is made of a transparent material, and light enters the organic active layer from the side of the transparent electrode. Charges (holes and electrons) are generated in the organic active layer by energy (hν) of light incident on the organic active layer, and the generated holes go to the anode, and the electrons go to the cathode. Therefore, by connecting an external circuit at the electrodes, a current (I) can be supplied to the external circuit. [0003] The organic active layer is composed of an electron-accepting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42
CPCB82Y10/00Y02E10/549H10K85/115H10K85/1135H10K85/215H10K85/151H10K85/113H10K30/35H10K2102/103H10K30/50H10K30/30
Inventor 加藤岳仁大西敏博
Owner SUMITOMO CHEM CO LTD
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