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Dye sensitized nano crystal hull solar cell photoelectric pole and preparation method thereof

A technology for solar cells and sensitized nanocrystals, applied in the field of solar cells

Inactive Publication Date: 2010-03-10
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this compromise method cannot resolve the contradiction between the two

Method used

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  • Dye sensitized nano crystal hull solar cell photoelectric pole and preparation method thereof
  • Dye sensitized nano crystal hull solar cell photoelectric pole and preparation method thereof
  • Dye sensitized nano crystal hull solar cell photoelectric pole and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Poly(ethylene glycol-propylene glycol-ethylene glycol) triblock copolymer EO with a copolymerization unit ratio of 37:56:37 37 PO 56 EO 37 (P105) is the surface active agent and acetone as the medium to prepare rough TiO2 microspheres. The raw material solution is prepared in two steps: First, solution 1 is in a clean beaker, and 0.5-3.5ml of tetrabutyl titanate and 10~ Mix 55ml of ethylene glycol, and airtightly stir at room temperature (25°C) for 2-10 hours; solution 2 is to add 0.3-0.8ml of P105 triblock copolymer aqueous solution with a concentration of 5-20wt% to 80-150ml of acetone , Magnetic stirring for 0.5 to 1.5 hours. Then, the solution 2 and the solution 1 are maintained at the same initial temperature (-4 to 0°C) for 0.5 to 1.0 hours. Pour solution 1 into solution 2, continue to stir in an ice bath, remove the ice bath after 10-30 minutes, and stop stirring after another 10-30 minutes. Centrifuge, wash, and dry. figure 1 Ti0 2 The SEM images of rough micros...

Embodiment 2

[0048] Using the preparation method described in Example 1, only the surfactant was changed to EO-PO-EO(F68) triblock copolymer EO with a copolymerization unit ratio of 78:30:78 78 PO 30 EO 78 , Get as figure 2 TiO shown 2 Rough microspheres. figure 2 The medium particle size is 550-1000nm, and the surface is relatively smooth.

Embodiment 3

[0050] Similarly, using the preparation method described in Example 1, using P105 as the surfactant, and only raising the initial temperature to 0-30°C, image 3 TiO shown 2 Rough microspheres. Figure 4 Using P105 as the surfactant, TiO with different morphologies prepared as in Example 1 2 Rough microspheres ( image 3 ) Is a diagram of the pore size to pore volume, where T1 to T2 represent two different initial reaction temperatures of -4~0℃ and 0~30℃ respectively.

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Abstract

The invention belongs to the technical field of solar batteries, and particularly relates to a high light absorption efficiency photoelectrode of a dye-sensitized nanocrystalline film solar battery based on TiO2 rough microballoons and a preparation method thereof. By using the titanium alkoxide liquid phase hydrolization method, and taking poly (ethylene glycol-propylene glycol-ethylene glycol) triblock copolymer EO-PO-EO as a surface active agent, the photoelectrode of the dye-sensitized nano-crystalline film solar battery based on TiO2 rough micro-balloons is obtained, and the rough microballoons are used as the light scattering center; the photoelectrode is composed of two layers of TiO2 nano-crystalline film, one layer is composed of TiO2 nano-crystalline particles 5-30 nm in particlediameter, and the other layer is formed by mixing TiO2 rough micro-balloons 100-500 nm in particle diameter and 5-100 wt% in content and TiO2 nano-crystalline particles 5-30 nm in particle diameter and 0-95 wt% in content.

Description

Technical field [0001] The invention belongs to the technical field of solar cells, and particularly relates to a TiO-based 2 A photoelectrode with high light absorption efficiency of a dye-sensitized nanocrystalline thin film solar cell with rough microspheres, and a preparation method of the photoelectrode. Background technique [0002] In dye-sensitized nanocrystalline thin film solar cells, TiO 2 Nanocrystalline film has a dual role. One is as a carrier for dyes. Dye adsorbed on TiO 2 On the surface of the nanocrystal, photons are absorbed into an excited state, and then electrons in the excited state transition to TiO 2 The conductive tape is then transported to the external circuit. Since a single dye can only generate one electron, TiO is needed to maximize the current and efficiency of the battery 2 The nanocrystalline film absorbs more dyes, which means it has a larger specific surface area. The second is as a light limiting layer. The light-limiting effect of the lig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/0224H01L31/18H01L51/44H01L51/46H01L51/48H01L21/28H01G9/04H01G9/20H01M14/00H01M4/02H01M4/04
CPCY02E10/542Y02E10/549Y02E60/10Y02P70/50
Inventor 杨雷林原肖绪瑞李学萍周晓文
Owner INST OF CHEM CHINESE ACAD OF SCI
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