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Light conversion element containing ion liquid, production method of same, and device containing photovoltaic conversion element

A technology of optical conversion components and ionic liquids, applied in optical components, electrical components, semiconductor devices, etc., can solve problems such as weak signals and achieve sufficient fluidity

Inactive Publication Date: 2013-06-12
TOKYO INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In Non-Patent Document 9, it is described that an attempt was made to measure the properties of a porphyrin ionic liquid, which is a polycyclic aromatic π-electron conjugated system molecule, but the obtained signal was weak because the molecule was basically insoluble in the ionic liquid.

Method used

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  • Light conversion element containing ion liquid, production method of same, and device containing photovoltaic conversion element
  • Light conversion element containing ion liquid, production method of same, and device containing photovoltaic conversion element
  • Light conversion element containing ion liquid, production method of same, and device containing photovoltaic conversion element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0185] Example 1 Dissolution / Separation of Organic Photosensitive Molecules and Organic Luminescent Molecules in Ionic Liquids scattered

[0186] Organic photosensitive molecules and organic light-emitting molecules are dissolved and / or dispersed in the ionic liquid through the 3 steps shown below. (Pictures and schematics of these steps are shown in Figure 4 . )

[0187] step 1

[0188] Put ionic liquid #1 (colorless and transparent) with a volume of 400 μl in a glass bottle with a volume of 1.5-10 ml at room temperature. Next, in the ionic liquid, the concentration of organic photosensitive molecule #1 dissolved in toluene was added to be 4×10 -4 M solution 50μl and the concentration of luminescent molecule #1 dissolved in toluene is 4×10 -3 M solution was 100 μl. As a result, the colorless and transparent ionic liquid #1 was the lower layer and the green toluene solution containing the organic photosensitive molecule #1 and the organic light-emitting molecule #1 w...

Embodiment 2～17

[0195] Using the ionic liquids shown in the following Table 1, organic photosensitive molecules, and organic light-emitting molecules, except that, the same operation as in Example 1 was performed, and as a result, a single-layer solution and / or dispersion that was visually homogeneous and transparent was obtained. . Example 1 is also shown in Table 1 below.

[0196] [Table 1]

[0197] Example

Embodiment 18

[0198] Example 18 Light conversion confirmation experiment of light conversion element

[0199] At room temperature, the sample prepared in Example 1 was placed in a glove box under a nitrogen atmosphere, and the glass bottle was taken out after installing an airtight cover, and irradiated with continuous laser light emission #1. As a result, in an indoor environment where an indoor light was installed, the Fully confirmed: bright blue upconverted luminescence. If calculated based on the spot diameter of the laser, the excitation power density is about 2W / cm 2 . A diagram showing the case of up-conversion ( Figure 5 ).

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Abstract

Provided is a light conversion element solving problems of conventional light conversion elements, such as combustibility of the medium, volatility, and decreased upconversion light intensity caused by high viscosity of the medium. The problems are solved by using a light conversion element which appears homogenous and transparent when observed visually, composed by melting and / or dispersing in an ion liquid a combination of organic photosensitizer molecules and organic light-emitting molecules exhibiting a triplet-triplet annihilation process.

Description

technical field [0001] The invention relates to a light conversion element containing ionic liquid, a manufacturing method thereof and a device containing the light conversion element. Background technique [0002] At a time when there is a strong demand for countermeasures against global warming and alternative energy such as clean energy, it is imperative to develop technologies that efficiently convert sunlight into secondary energy (electricity, hydrogen, etc.), and solar cells and products with high light conversion efficiency Expectations for hydrogen photocatalysts and the like are rising. Solar cells and hydrogen-producing photocatalysts use only the wavelength components inherent in the system that are shorter than a certain threshold wavelength for conversion within a wide range of wavelengths contained in sunlight. One of the range of technologies studied is the upconversion of light (that is, the conversion of the wavelength of light by absorbing light of a long...

Claims

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Application Information

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IPC IPC(8): C09K11/06H01L31/052
CPCC09K11/025C09K11/06H01G9/2013H01L31/055Y02E10/52Y02E10/542Y02P70/50H01L31/052B01J31/22G02B1/04
Inventor 村上阳一佐藤勋
Owner TOKYO INST OF TECH
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