Preparation method of p-n type Cu2O/TiO2 nanowire array composite film

A technology of nanowire array and composite thin film, which is applied in the direction of nanotechnology, nanotechnology, semiconductor/solid-state device manufacturing, etc., can solve the problem of low utilization rate of visible light, achieve high regularity and order, good photoelectric performance, and expand Effect of Response Range

Inactive Publication Date: 2014-03-19
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is for the original TiO 2 A kind of p-n type Cu provided by the disadvantage of low utilization rate of visible light in the preparation of nanowire array film 2 O / TiO 2 Preparation method of nanowire array composite film, improving TiO 2 The response range of nanowire array films to sunlight and the separation efficiency and mobility of photogenerated electron-hole pairs; this material has very good commercial application prospects in the field of solar cells and environmental pollution

Method used

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  • Preparation method of p-n type Cu2O/TiO2 nanowire array composite film
  • Preparation method of p-n type Cu2O/TiO2 nanowire array composite film
  • Preparation method of p-n type Cu2O/TiO2 nanowire array composite film

Examples

Experimental program
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Effect test

Embodiment 1

[0024] TiO 2 Fabrication of Nanowire Array Thin Films

[0025] Take 15mL of ultrapure water and 15mL of concentrated HCL with a mass fraction of 38% in a beaker and stir on a magnetic stirrer until they are evenly mixed, then add 0.5mL of tetra-n-butyl titanate dropwise to the above solution, and stir for 30 minutes to form Colorless solution (labeled solution A); put a piece of FTO substrate with the conductive side up in a 50 mL autoclave liner, then transfer the resulting colorless mixed solution A to the autoclave liner and submerge FTO substrate, and finally put the autoclave into an oven at 150°C for 12 hours; after the reaction, cool to room temperature and rinse with deionized water to obtain TiO 2 Nanowire Array Films.

[0026] p-n type Cu 2 O / TiO 2 Preparation of Nanowire Array Composite Thin Film

[0027] Prepare 0.4mol / LCuSO 4 and 3mol / LC 3 h 6 o 3 (Lactic acid) mixed solution, and adjusted to pH = 7 with 5mol / L NaOH solution to obtain a dark blue solution...

Embodiment 2

[0029] TiO 2 Fabrication of Nanowire Array Thin Films

[0030] Take 15mL of ultrapure water and 15mL of concentrated HCL with a mass fraction of 38% in a beaker and stir on a magnetic stirrer until they are evenly mixed, then add 0.5mL of tetra-n-butyl titanate dropwise to the above solution, and stir for 30 minutes to form Colorless solution (labeled solution A); put a piece of FTO substrate with the conductive side up in a 50 mL autoclave liner, then transfer the resulting colorless mixed solution A to the autoclave liner and submerge FTO substrate, and finally put the autoclave into an oven at 150°C for 12 hours; after the reaction, cool to room temperature and rinse with deionized water to obtain TiO 2 Nanowire Array Films.

[0031] p-n type Cu2 O / TiO 2 Preparation of Nanowire Array Composite Thin Film

[0032] Prepare 0.4mol / LCuSO 4 and 3mol / LC 3 h 6 o 3 (Lactic acid) mixed solution, and adjusted to pH = 8 with 5mol / L NaOH solution to obtain a dark blue solution (...

Embodiment 3

[0034] Fabrication of Nanowire Array Thin Films

[0035] Take 15mL of ultrapure water and 15mL of concentrated HCL with a mass fraction of 38% in a beaker and stir on a magnetic stirrer until they are evenly mixed, then add 0.5mL of tetra-n-butyl titanate dropwise to the above solution, and stir for 30 minutes to form Colorless solution (labeled solution A); put a piece of FTO substrate with the conductive side up in a 50 mL autoclave liner, then transfer the resulting colorless mixed solution A to the autoclave liner and submerge FTO substrate, and finally put the autoclave into an oven at 150°C for 12 hours; after the reaction, cool to room temperature and rinse with deionized water to obtain TiO 2 Nanowire Array Films.

[0036] p-n type Cu 2 O / TiO 2 Preparation of Nanowire Array Composite Thin Film

[0037] Prepare 0.4mol / LCuSO 4 and 3mol / LC 3 h 6 o 3 (Lactic acid) mixed solution, and adjusted to pH = 9 with 5mol / L NaOH solution to obtain a dark blue solution (m...

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Abstract

The invention discloses a preparation method of a p-n type Cu2O/TiO2 nanowire array composite film. According to the method disclosed by the invention, a TiO2 nanowire array is sensitized by using a p-type inorganic semiconductor material Cu2O, a TiO2 nanowire array film is prepared by adopting a hydrothermal method at first, then the p-n type Cu2O/TiO2 nanowire array composite film with different content of Cu2O nano particles is prepared through controlling the deposition time by adopting an electro-deposition method, and the Cu2O particles are uniformly distributed on a TiO2 nanowire. The preparation method disclosed by the invention is simple to operate, low in raw material cost and simple in equipment. In addition, the size of prepared materials is uniform, and the stability and the photoelectric performance are good.

Description

technical field [0001] The invention relates to the synthesis of p-n type Cu by solvothermal method and electrochemical deposition method 2 O / TiO 2 The technical field of synthesis of nanowire array composite film, specifically a kind of p-type narrow energy bandgap inorganic semiconductor material Cu 2 O nanoparticles sensitized TiO 2 Method for Nanowire Array Thin Films; Produced p-n-type Cu 2 O / TiO 2 Cu in nanowire array composite films 2 O nanoparticles are uniformly distributed in TiO 2 in nanowire arrays. Background technique [0002] Energy shortage and environmental pollution are major problems facing human beings. How to rationally use existing energy and develop new energy has become a hot research topic for scientists in various countries. Solar energy has the advantages of being universal, harmless, huge, and long-lasting. Therefore, how to improve the utilization rate of solar cells to sunlight is imminent. [0003] TiO 2 Because of its cheap and non-to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01L21/02565H01L21/02628H01L31/18Y02P70/50
Inventor 丁旵明杨圆圆周岩
Owner EAST CHINA NORMAL UNIV
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