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Under-wavelength transfer material as well as preparation method and application thereof

A wavelength and purpose technology, applied in the field of wavelength transfer materials and their preparation, can solve the problems of quenching, prone to aggregated state fluorescence, unable to fully absorb photons, etc., and achieve the effect of improving efficiency, widening absorption range and expanding absorption.

Active Publication Date: 2013-09-04
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current synergistic film materials for solar cells are limited to a class of perylene-based derivatives specific to CdS / CdTe (L.Danos et al., Sol.Energy Mater.Sol.Cells982012486-490.), and this type of perylene-based derivatives The derivatives of CdS / CdTe solar cells can only bring about 8% improvement to CdS / CdTe solar cells because they cannot completely absorb photons below 500nm, and they are prone to aggregated state fluorescence quenching during the preparation process.

Method used

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  • Under-wavelength transfer material as well as preparation method and application thereof
  • Under-wavelength transfer material as well as preparation method and application thereof
  • Under-wavelength transfer material as well as preparation method and application thereof

Examples

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Embodiment 1

[0050] This embodiment relates to a wavelength transfer material and a preparation method thereof for CdS / CdTe solar cells, including the following steps:

[0051] Step 1, Synthesis of Aldehyde Tetraphenylethylene (TPE-CHO)

[0052]

[0053] Bromotriphenylethylene (1.0g, 3.0mmol), aldehyde phenylboronic acid (895mg, 6.0mmol), [1,1'-bis(diphenylphosphino)ferrocene]palladium dichloride (109mg, 5mol%) and potassium carbonate (2.1g, 14.9mmol) were added to 50mL of a mixture of methanol and toluene in an equal volume ratio, heated to 75°C, and stirred for 16 hours; the reaction solution was cooled to room temperature, filtered, and evaporated under reduced pressure Solvent, the crude product was purified by column chromatography using n-hexane / dichloromethane (2:1 volume ratio) as the mobile phase and silica gel as the stationary phase to obtain 976 mg of a light yellow solid with a yield of 91%;

[0054] Step 2, Synthesis of Tetraphenylethylenemalononitrile (TPE-DCN)

[0055]...

Embodiment 2

[0059] This embodiment relates to a wavelength transfer material and a preparation method thereof for a CdS / CdTe solar cell. The method includes the following steps:

[0060] Step 1, Synthesis of Bromotetraphenylethylene (TPE-Br)

[0061]

[0062] Dissolve benzylbenzene (2.0g, 11.9mmol) in 20mL of anhydrous tetrahydrofuran, stir at 0°C under nitrogen protection, slowly add 1.6M n-butyllithium n-hexane solution (7.4mL, 11.9mmol), react for 30 minutes; then add 4-bromobenzophenone (3.1g, 11.9mmol), slowly warm up to room temperature, continue to stir the reaction for 6 hours, then add a small amount of water to the reaction solution to stop the reaction, and the reaction solution is extracted with dichloromethane for two Next, the organic layer was dried with anhydrous magnesium sulfate, filtered, and the solvent was evaporated under reduced pressure. The obtained solid was dissolved in 80 mL of toluene, and hydrated p-toluenesulfonic acid (500 mg, 2.6 mmol, catalyst) was add...

Embodiment 3

[0074] This embodiment relates to a wavelength transfer material and a preparation method thereof for a CdS / CdTe solar cell. The method includes the following steps:

[0075] Step 1, Synthesis of Dibromotetraphenylethylene (TPE-DBr)

[0076]

[0077] Add 4-bromobenzophenone (5.0 g, 19.1 mmol) and zinc powder (2.5 g, 38.3 mmol) into 50 mL of tetrahydrofuran, add 1M titanium tetrachloride toluene solution (21.1 mL, 21.1 mmol), and heat Reflux, stirring and reacting for 20 hours, the reaction solution was cooled to room temperature, filtered, and the solvent was evaporated under reduced pressure. The crude product was purified by column chromatography using n-hexane as the mobile phase and silica gel as the stationary phase to obtain 2.7 g of a white solid with a yield of 57%;

[0078] Step 2, Synthesis of Dialdehyde Tetraphenylethylene (TPE-DCHO)

[0079]

[0080] Dissolve TPE-DBr (1.0g, 2.0mmol) in 50mL of anhydrous tetrahydrofuran, stir at -78°C under nitrogen protectio...

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Abstract

The invention provides an under-wavelength transfer material as well as a preparation method and an application thereof. The structural formula of the under-wavelength transfer material is as shown in (I) or (II). According to the preparation method, the under-wavelength transfer material is prepared by reacting a tetraphenyl ethylene midbody with functional groups and groups with electron-deficient property through Suzuki, Stille and Knoevenagel. The application mode of the under-wavelength transfer material is as follows: mixing the under-wavelength transfer material in a polymer in proportion to prepare a synergism film, directly coating the surface of a CdS / CdTe solar battery with the synergism film, and filling space between interfaces with a refractive index matching liquid. The prepared synergism film can be used for expanding the absorption of the CdS / CdTe solar battery on photons with the wavelength of 500nm, so that the efficiency of the CdS / CdTe solar battery is improved by 6%-11%, and the CdS / CdTe solar battery has a good application prospect.

Description

technical field [0001] The present invention relates to an organic compound and its synthesis method and application, in particular to a wavelength transfer material and its preparation method and application. Background technique [0002] Solar energy is an inexhaustible safe and green energy. Efficient use of solar energy can alleviate the fossil energy crisis in the world today, reduce greenhouse gas emissions, and reduce PM2.5 pollution. In order to improve the light conversion efficiency of solar cells, it is common practice to continuously develop new solar cells (S.M.Bedair et al., Appl. Phys. Lett. 34197938-39.) or to optimize and improve existing solar cells (B.E.McCandless et al. al., PVSC21991967-972.). However, using this method requires overcoming a lot of technical difficulties and investing a lot of manpower, material resources and time, and the manufacturing cost of most new solar cells is far greater than the price that the market can bear. According to t...

Claims

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Application Information

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IPC IPC(8): C07C255/34C07C253/30H01L31/055C08J5/18C08L33/12C08K5/315
CPCY02E10/52
Inventor 李亦林董文基任天辉李志鹏
Owner SHANGHAI JIAO TONG UNIV
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