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Method of preparing polymer solar cell with organic molecule inorganic upconversion nano heterostructure

A nano-heterostructure and solar cell technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of photogenerated electrons and hole recombination, poor compatibility of organic active layers, and affecting photoelectric conversion efficiency, etc., to achieve repeatability Strong, broaden the absorption range, improve the effect of photoelectric conversion efficiency

Inactive Publication Date: 2017-12-05
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the existing patented technology, the active layer of polymer solar cells can only absorb part of the wavelength band of sunlight, so the photoelectric conversion efficiency is low; there are relatively few studies on the application of inorganic nanomaterials to polymer solar cells, mainly inorganic nanomaterials and The organic active layer of polymer solar cells has poor compatibility, which easily causes the recombination of photogenerated electrons and holes, which affects the photoelectric conversion efficiency.

Method used

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  • Method of preparing polymer solar cell with organic molecule inorganic upconversion nano heterostructure
  • Method of preparing polymer solar cell with organic molecule inorganic upconversion nano heterostructure
  • Method of preparing polymer solar cell with organic molecule inorganic upconversion nano heterostructure

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Embodiment 1

[0038] A method for preparing a polymer solar cell with an organic molecule-modified inorganic rare earth up-conversion nano-heterostructure, comprising the following steps:

[0039] Step 1: NaYbF 4 :Eu 3+ Synthesis of nanoparticles;

[0040] (1) Dissolve 1.2 grams of NaOH in 2 milliliters of water, then add 8 milliliters of ethanol and 20 milliliters of oleic acid, stir well to obtain solution 1;

[0041] (2) 0.7mmolYb(NO 3 ) 3 and 0.30mmol Eu(NO 3 ) 3 Added to the above solution to obtain solution 2;

[0042] (3) Weigh 1.0 g of polyvinylpyrrolidone with a molecular weight of 10,000, add it to solution 2, then add 8 mL of 1.0 mol / L NaF, and stir evenly at 30° C. for 30 minutes to obtain solution 3;

[0043] (4) Transfer the solution 3 into a polytetrafluoroethylene liner reactor, seal it, react at 180° C. for 12 hours, and then naturally cool to room temperature;

[0044] (5) After the reaction kettle is naturally cooled to room temperature, transfer the solution to a...

Embodiment 2

[0058] The present invention proposes a method for preparing a polymer solar cell with inorganic rare earth up-conversion nano-heterostructure modified by organic molecules. In this embodiment, only one organic molecule, thiophenoyl trifluoroacetone, is used. Include the following steps:

[0059] Step 1: NaYbF 4 :Eu 3+ Synthesis of nanoparticles;

[0060] (1) Dissolve 1.2 grams of NaOH in 2 milliliters of water, then add 8 milliliters of ethanol and 20 milliliters of oleic acid, stir well to obtain solution 1;

[0061] (2) 0.7mmolYb(NO 3 ) 3 and 0.30mmol Eu(NO 3 ) 3 Added to the above solution to obtain solution 2;

[0062] (3) Weigh 1.0 g of polyvinylpyrrolidone with a molecular weight of 10,000, add it to solution 2, then add 8 mL of 1.0 mol / L NaF, and stir evenly at 30° C. for 30 minutes to obtain solution 3;

[0063] (4) Transfer the solution 3 into a polytetrafluoroethylene liner reactor, seal it, react at 180° C. for 12 hours, and then naturally cool to room temp...

Embodiment 3

[0077] The present invention proposes a method for preparing a polymer solar cell with an organic molecule-modified inorganic rare earth up-conversion nano-heterostructure. In this embodiment, only one organic molecule, o-phenanthroline, is used. Include the following steps:

[0078] Step 1: NaYbF 4 :Tb 3+ / Eu 3+ Synthesis of nanoparticles;

[0079] (1) Dissolve 1.2 grams of NaOH in 2 milliliters of water, then add 8 milliliters of ethanol and 20 milliliters of oleic acid, stir well to obtain solution 1;

[0080] (2) Add 0.7mmolYb(NO 3 ) 3 , 0.15mmol Eu(NO 3 ) 3 and 0.15mmol Tb(NO 3 ) 3 Added to the above solution to obtain solution 2;

[0081] (3) Weigh 1.0 g of polyvinylpyrrolidone with a molecular weight of 10,000, add it to solution 2, then add 8 mL of 1.0 mol / L NaF, and stir evenly at 30° C. for 30 minutes to obtain solution 3;

[0082] (4) Transfer the solution 3 into a polytetrafluoroethylene liner reactor, seal it, react at 180° C. for 12 hours, and then nat...

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Abstract

The invention discloses a method of preparing a polymer solar cell with an organic molecule inorganic upconversion nano heterostructure. The method comprises the following steps: 1, NaYbF4:Tb<3+> / Eu<3+> nanoparticles are synthesized; 2, 0.2 mmol of NaYbF4:Tb<3+> / Eu<3+> nanoparticles are dispersed in 10 milliliter ethanol, ultrasonic dispersion is carried out for 30 minutes, and heating to 40 DEG C and keeping for 20 minutes are then carried out; and 3, an organic molecular-modified upconversion NaYbF4:Tb<3+> / Eu<3+> nanoparticle polymer solar cell is prepared. The NaYbF4:Tb<3+> / Eu<3+> nanoparticles are synthesized through a control condition, through organic molecular modification, the NaYbF4:Tb<3+> / Eu<3+> nanoparticles are directly applied to the surface of a conductive layer of the polymer solar cell, the organic molecular-modified upconversion NaYbF4:Tb<3+> / Eu<3+> absorbs ultraviolet and infrared light, the light emitting range is matched with absorption of a polymer solar cell active layer, the structure can effective improve the material stability, and the photoelectric conversion efficiency of the cell can be effectively improved. In comparison with the prior art, the solar light absorption range is effectively widened, and besides, a filling factor is also slightly improved, and the preparation process is simple and is worth popularizing.

Description

technical field [0001] The invention relates to the technical field of solar cell preparation, in particular to a method for preparing a polymer solar cell with an organic molecule-modified inorganic rare earth up-conversion nano-heterostructure. Background technique [0002] As one of the important clean energy sources, the "inexhaustible" sunlight waves span a broad spectrum from the ultraviolet region to the infrared region. Scientists are committed to making use of various bands of sunlight as much as possible. More efficient solar cells. Among them, the polymer solar cell with simple preparation process and low price is expected to be a promising technology for the next generation, but its photoelectric conversion efficiency is only 7%. One of the main reasons for the low conversion efficiency is the narrow absorption range of the active layer. Therefore, broadening the absorption range of sunlight and converting it into an absorbable wavelength band is considered to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K71/00H10K85/00H10K30/10H10K30/80Y02E10/549
Inventor 焦吉庆唐建国盖沙沙李耀王瑶刘继宪黄林军王薇劳伦斯·A·巴菲奥
Owner QINGDAO UNIV