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Method for preparing dye-sensitized solar cell through in-situ growth of TiO2 nano-particles/nanotubes

A solar cell and nanoparticle technology, applied in nanotechnology, photosensitive equipment, circuits, etc., can solve the problems of clogging the diameter of nanotubes, complicated experimental procedures, affecting optoelectronic properties, etc., to improve adsorption capacity, broad application prospects, and experimental process. simple effect

Inactive Publication Date: 2014-07-30
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above methods usually require complex experimental procedures and strict experimental conditions, and the prepared TiO 2 NPs / NTAs composite structure, in which TiO 2 NPs are often not monodispersed on the surface of nanotubes, and are prone to agglomeration, which can block the caliber of nanotubes and affect the photoelectric performance.

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  • Method for preparing dye-sensitized solar cell through in-situ growth of TiO2 nano-particles/nanotubes
  • Method for preparing dye-sensitized solar cell through in-situ growth of TiO2 nano-particles/nanotubes
  • Method for preparing dye-sensitized solar cell through in-situ growth of TiO2 nano-particles/nanotubes

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[0031] The invention provides an in-situ growth TiO 2 A method for preparing a nanoparticle / nanotube dye-sensitized solar cell. The preparation method solves the problems that the experimental conditions cannot be accurately controlled and the composite structure is difficult to form in the traditional processing method. The operation steps are simple, the experiment cost is low, and the experimental by-products are not polluting to the environment; in addition, the prepared TiO 2 The overall structure of the nanoparticle / nanotube composite structure is clear, the size of the nanoparticles is uniform, and the pore thickness of the nanotubes is controllable, which can be effectively used in the treatment of environmental pollution, photodegradation of water, solar cells, biological coatings, etc. Causes a burden and has a good application prospect.

[0032]The present invention uses titanium sheets as the substrate, and controls the reaction time through a two-step electrochem...

Embodiment 1

[0051] Example 1: TiO 2 The nanoparticle / nanotube electrode preparation process is as follows:

[0052] (1) Pretreatment of commercial titanium sheets: Cut commercial titanium sheets with a thickness of 0.2mm into a comb-like structure of a certain size. Ultrasonic cleaning is performed sequentially with deionized water, acetone, alcohol, and deionized water to clean the impurities on the surface of the titanium sheet. Air dry with a hair dryer and set aside. In this experimental procedure, inexpensive commercial titanium discs (99.6% pure) were used. During the ultrasonic cleaning process, the ultrasonic treatment time in each cleaning process was 10 minutes, and the surface of the titanium sheet was kept as smooth as possible.

[0053] (2) Preparation of anodic oxidation solution: NH 4 F was added into the analytically pure anhydrous organic solvent ethylene glycol according to the mass percentage of 0.2wt%, added a magnetic stirrer, and stirred on a magnetic stirrer at ...

Embodiment 2

[0065] Example 2: TiO 2 The nanoparticle / nanotube electrode preparation process is as follows:

[0066] (1) Pretreatment of commercial titanium sheets: Cut commercial titanium sheets with a thickness of 0.3mm into a comb-like structure of a certain size. Ultrasonic cleaning is performed sequentially with deionized water, acetone, alcohol, and deionized water to clean the impurities on the surface of the titanium sheet. Air dry with a hair dryer and set aside. In this experimental procedure, a high-purity titanium sheet with a purity of 99.7% was used. During the ultrasonic cleaning process, the ultrasonic treatment time was 15 minutes in each cleaning process, and the surface of the titanium sheet was kept as smooth as possible.

[0067] (2) Preparation of anodic oxidation solution: NH 4 F was added to the analytically pure ethylene glycol solvent according to the mass percentage of 0.2wt%, a magnetic stirrer was added, and it was placed on a magnetic stirrer at room temper...

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Abstract

The invention discloses a method for preparing a dye-sensitized solar cell through in-situ growth of TiO2 nano-particles / nanotubes. A titanium sheet is placed in an anodic oxidation solution to be subjected to two times of anodic oxidation reactions so as to obtain TiO2 nano-particles based on a titanium substrate; then, the titanium substrate is peeled off to obtain a TiO2 nano-particle film, the TiO2 nano-particle film is pasted on conductive glass, the conductive glass with the TiO2 nano-particle film is placed in a solution containing water to be subjected to a water treatment reaction, and a TiO2 nano-particle / nanotube composite structure is obtained; finally, the obtained composite structure is processed through annealing crystallization, and is soaked in a dye solution, and the dye-sensitized solar cell is assembled. According to the method, no externally added Ti sources are needed, the requirement for reaction conditions is low, the effect is remarkable, and the problems that in the prior art, experiment conditions cannot be easily controlled, operation is tedious, and the obtained TiO2 nano-particles easily bunch up are well solved.

Description

technical field [0001] The invention relates to the field of semiconductor nanomaterial technology and dye-sensitized solar cell technology, in particular to an in-situ grown TiO 2 Preparation method of nanoparticle / nanotube dye-sensitized solar cells. Background technique [0002] In recent years, wide bandgap semiconductor nano functional material TiO 2 Due to its unique physical structure and good photoelectric properties, it has been widely used in many fields such as sensors, optoelectronic materials, photocatalysis, battery electrode materials, and biomedical materials. Nano-TiO 2 The material not only has stable chemical properties, but also has excellent photocatalytic activity, which can degrade biological fouling such as bacteria, and more importantly, it shows good compatibility with organisms in vivo, which is its A good foundation has been laid in biomedicine. TiO 2 is a wide bandgap (E g =3.2eV) n-type semiconductor material, which has superior electron t...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/042B82Y40/00
CPCY02E10/542
Inventor 王浩李思倩张军李全同汪宝元丁浩
Owner HUBEI UNIV