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Method for preparing homogenous barrier layer/frame structure by means of titanium tetrachloride hydrolysis and application thereof

A skeleton structure, titanium tetrachloride technology, applied in nanotechnology, photosensitive equipment, nanotechnology, etc. for materials and surface science, can solve the problems of easy recombination of photoelectrons and low electron transmission efficiency, and shorten electron transmission The effect of uniform distance, barrier layer thickness, and increased optical path length

Active Publication Date: 2018-01-26
HARBIN INST OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing mesoporous materials are used as photoanodes of sensitized solar cells with low electron transmission efficiency and photoelectrons are prone to recombination in the transmission process, and provide a method for preparing the same mesoporous materials by hydrolysis of titanium tetrachloride. Method and application of qualitative barrier layer / skeleton structure

Method used

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  • Method for preparing homogenous barrier layer/frame structure by means of titanium tetrachloride hydrolysis and application thereof
  • Method for preparing homogenous barrier layer/frame structure by means of titanium tetrachloride hydrolysis and application thereof
  • Method for preparing homogenous barrier layer/frame structure by means of titanium tetrachloride hydrolysis and application thereof

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specific Embodiment approach 1

[0037] Specific implementation mode 1: This implementation mode is a method for preparing a homogeneous barrier layer / skeleton structure by hydrolysis of titanium tetrachloride, which is specifically completed according to the following steps:

[0038] 1. Ultrasonic cleaning the conductive substrate in toluene, acetone, absolute ethanol and deionized water in sequence, then rinsed with absolute ethanol for 2 to 4 times, and finally dried with nitrogen to remove the oil on the surface to obtain a clean conductive substrate;

[0039] Second, the use of TiCl 4 Preparation of barrier layer by hydrolysis:

[0040] ①. Prepare a titanium tetrachloride aqueous solution with a concentration of 20mmol / L-60mmol / L in an ice-water bath, seal it, and stir it under an ice-water bath at a stirring speed of 50r / min-80r / min for 1h-3h to obtain a barrier layer solution ;

[0041] ②. Fix the conductive surface of the clean conductive substrate in the beaker with the conductive surface facing do...

specific Embodiment approach 2

[0058] Embodiment 2: This embodiment differs from Embodiment 1 in that: the conductive substrate described in step 1 is FTO conductive glass, ITO conductive glass or flexible graphene substrate. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0059] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, the frequency of ultrasonic cleaning of the conductive substrate in toluene is 30 kHz to 90 kHz, and the time of ultrasonic cleaning is 15 min to 60 min. The frequency of ultrasonic cleaning in acetone is 30kHz~90kHz, and the time of ultrasonic cleaning is 15min~60min. The frequency of ultrasonic cleaning in water is 30kHz-90kHz, and the time of ultrasonic cleaning is 15min-60min. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a method for preparing a homogenous barrier layer / frame structure by means of titanium tetrachloride hydrolysis and application thereof. The method and the application thereof relate to a photoanode preparing method and application thereof. The method according to the invention and the application thereof aim to settle problems of low electron transferring efficiency and easy photoelectron recombination in a transferring process when an existing meso pore material is used as the photoanode of a sensitized solar cell. The method comprises the steps of 1, preparing a conductive substrate in which impurities are eliminated; 2, preparing a barrier layer by means of TiCl4 hydrolysis; and 3, preparing a TiO2 frame by means of a hydro-thermal system, and obtaining the homogenous barrier layer / frame structure. When the prepared homogenous barrier layer / frame structure is used as the photoanode of an inorganic quantum dot sensitized solar cell, the photoelectric conversion efficiency (PCE) of the inorganic quantum dot sensitized solar cell reaches 5.45-6.24%. Through the method of the invention, the homogenous barrier layer / frame structure can be obtained.

Description

technical field [0001] The invention relates to a method for preparing a photoanode and its application. Background technique [0002] In recent years, with the continuous increase of people's demand for energy and the continuous reduction of fossil fuel reserves, it has become one of the important topics of current scientific research to find a new source of abundant, green and environmentally friendly energy. As an inexhaustible natural energy source, solar energy is attracting more and more attention all over the world, among which solar cells can directly convert solar energy into electrical energy, which has become a research hotspot at present. [0003] Quantum dot sensitized solar cell (QDSSC) is a new type of solar cell developed based on dye sensitization system, which has the following advantages: 1. Adjustable band gap and high photostability; 2. Exciton multiplication effect; 3. Large extinction coefficient and intrinsic dipole moment promote the separation of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20B82Y30/00B82Y40/00
Inventor 姚忠平李东琦夏琦兴张凌儒孟艳秋戴鹏程姜兆华
Owner HARBIN INST OF TECH
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