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Method for effectively regulating and controlling linear diameter and perpendicularity of TiO2 nanowire array

A nanowire array, verticality technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve the effect of clear growth principle, simple and easy control process, and low cost

Inactive Publication Date: 2018-03-06
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

TiO 2 The wire diameter and perpendicularity of the nanowire array should have a greater impact on the performance of devices based on this material, and there is currently no way to regulate TiO without causing length changes. 2 Reporting of Nanowire Diameter and Perpendicularity

Method used

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  • Method for effectively regulating and controlling linear diameter and perpendicularity of TiO2 nanowire array

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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] An effective regulation of TiO 2 The method for the wire diameter and perpendicularity of the nanowire array mainly involves the following specific steps:

[0014] (1) 40-400mM TiCl 4 Hydrolysis reaction in aqueous solution, such as attached figure 1 The concentration used in the method was 150mM, then washed with deionized water and ethanol, and dried naturally to obtain TiO x film;

[0015] (2)TiO x The film is annealed in the air at a temperature of 100-550 to change its crystallinity and surface roughness, as shown in (a-c) in the attached figure for growing TiO directly on FTO glass 2 Nanowire arrays, (d-f), (e-i) and (j-l) TiO grown on the annealed seed layer at 100°, 300°, and 500°, respectively 2 array of nanowires.

[0016] (3) with TiO x The thin film is the seed layer, and TiO with different diameters and per...

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Abstract

The invention discloses a method for effectively regulating and controlling a linear diameter and a perpendicularity of a TiO2 nanowire array, and mainly relates to a TiOx seed layer and influence onthe linear diameter and the perpendicularity of generated TiO2 nanowires after the TiOx seed layer is annealed at different temperatures. TiCl4 is subjected to a hydrolysis reaction to prepare the TiOx seed layer, then the seed layer is annealed at different temperatures to cause changes of crystallinity and surface roughness of the seed layer, and the linear diameter and the perpendicularity of the TiO2 nanowire array generated by a hydrothermal reaction in the next step are further regulated and controlled.

Description

technical field [0001] The invention belongs to a regulated TiO 2 The research field of nanowire diameter and perpendicularity mainly involves adjusting the crystallinity and roughness of the seed layer by annealing at different temperatures and then adjusting the TiO 2 Methods for Diameter and Perpendicularity of Nanowire Arrays. Background technique [0002] TiO 2 Nanowire arrays have ordered and direct charge transport channels, and have better charge transfer capabilities than nanoparticle films, showing excellent performance in the field of optoelectronic devices. In the past studies, mainly focused on TiO 2 length of the nanowire array. TiO 2 The wire diameter and perpendicularity of the nanowire array should have a greater impact on the performance of devices based on this material, and there is currently no way to regulate TiO without causing length changes. 2 Nanowire diameter and perpendicularity are reported. [0003] The present invention proposes for the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C03C17/3417
Inventor 楚亮刘维李兴鳌
Owner NANJING UNIV OF POSTS & TELECOMM
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