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Preparation method for core shell structure-based up-conversion micro-nanosphere dye-sensitized solar battery photo anode

A technology of solar cells and micro-nano balls is applied in the field of preparation of photoanode of solar cells, which can solve the problems of low photoelectric conversion efficiency and poor conductivity of solar cells, and achieve the effects of improving cell efficiency, improving cell performance and enhancing up-conversion luminescence.

Inactive Publication Date: 2015-12-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor electrical conductivity of existing up-conversion powders, which makes the photoelectric conversion efficiency of solar cells low, and to provide a dye-sensitized solar cell photoanode based on up-conversion micro-nanospheres with a core-shell structure preparation method

Method used

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  • Preparation method for core shell structure-based up-conversion micro-nanosphere dye-sensitized solar battery photo anode
  • Preparation method for core shell structure-based up-conversion micro-nanosphere dye-sensitized solar battery photo anode
  • Preparation method for core shell structure-based up-conversion micro-nanosphere dye-sensitized solar battery photo anode

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specific Embodiment approach 1

[0052] Specific embodiment 1: This embodiment is a method for preparing a dye-sensitized solar cell photoanode based on core-shell structure upconversion micro-nanospheres, which is completed in the following steps:

[0053] 1. ①, NH 4 HF 2 Dissolve in deionized water to obtain NH 4 HF 2 Aqueous solution

[0054] NH mentioned in step 1 4 HF 2 The mass ratio of deionized water to the volume of deionized water is (1g~1.5g): 15mL;

[0055] ②. Dissolve rare earth nitrate in deionized water to obtain a rare earth nitrate solution;

[0056] The rare earth nitrate mentioned in step 1 ② is Yb(NO 3 ) 3 ·6H 2 O and Ho (NO 3 ) 3 ·5H 2 O mixture; the rare earth nitrate in Yb(NO 3 ) 3 ·6H 2 O and Ho (NO 3 ) 3 ·5H 2 The mass ratio of O is (1~1.3): 0.015;

[0057] The ratio of the mass of rare earth nitrate to the volume of deionized water in step 1 (2) is (1g~1.4g): 5mL;

[0058] ③. Dissolve cetyltrimethylammonium bromide in deionized water to obtain an aqueous solution of cetyltrimethylammonium bromi...

specific Embodiment approach 2

[0089] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the NH described in step one ① 4 HF 2 The mass ratio of deionized water to the volume ratio of 1.04g:15mL. The other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0090] Specific embodiment three: this embodiment is different from specific embodiment one or two in that the rare earth nitrate mentioned in step one ② is Yb(NO 3 ) 3 ·6H 2 O and Ho (NO 3 ) 3 ·5H 2 O mixture; the rare earth nitrate in Yb(NO 3 ) 3 ·6H 2 O and Ho (NO 3 ) 3 ·5H 2 The mass ratio of O is 1.04:0.015; the mass ratio of the rare earth nitrate to the volume of deionized water is 1.04g:5mL. The other steps are the same as the first or second embodiment.

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Abstract

The invention discloses a preparation method for a core shell structure-based up-conversion micro-nanosphere dye-sensitized solar battery photo anode, relates to a preparation method for a solar battery photo anode, and aims to solve the problem that photoelectric conversion efficiency of a solar battery is low because the conventional powder is poor in electric conductivity. The preparation method comprises the following steps: 1, preparing Ho-doped YbF3; 2, preparing TiO2-coated Ho-doped YbF3; 3, preparing TiO2-coated Ho-doped YbF3 slurry, performing silk screen printing, and performing calcination. A core shell structure-based up-conversion micro-nanosphere obtained according to the preparation methos can be used as a photo anode material for preparation of a core shell structure-based up-conversion micro-nanosphere dye-sensitized solar battery. Through the preparation method, a core shell structure-based up-conversion micro-nanosphere dye-sensitized solar battery photo anode can be obtained.

Description

Technical field [0001] The invention relates to a method for preparing a photoanode of a solar cell. Background technique [0002] Traditional dye-sensitized solar cells use less energy in the near-infrared region, which makes the absorption spectrum of the cell mismatch with the solar spectrum, which limits the improvement of cell efficiency. [0003] Rare earth upconversion materials can use near-infrared light and convert it into visible light. Therefore, the use of rare earth upconversion materials in dye-sensitized solar cells can expand the light response range of the battery to the near-infrared region, and improve the solar Utilization rate, thereby improving the photoelectric conversion efficiency of the battery. However, due to the poor conductivity of the up-conversion powder, its use in dye-sensitized solar cells will act as a recombination center for photo-generated carriers. The severe interfacial recombination reaction will hinder the transmission of electrons and r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/042
CPCY02E10/542
Inventor 杨玉林俞佳范瑞清张欣童
Owner HARBIN INST OF TECH