A dye sensitized solar battery anode and its making method

A technology for solar cells and dye sensitization, applied in the field of dye-sensitized solar cells, can solve the problem of not clearly clarifying the grain size, orientation and porosity characteristics of thin films.

Inactive Publication Date: 2008-09-10
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The difference between the present invention and the (4) patent is that the present invention adopts intermediate frequency or radio frequency magnetron reactive sputtering to prepare TiO with anatase crystal form, preferential orientation along the (101) plane, and porous structure. 2 The thin-film electrode is specially used for DSSC; while the patent (4) adopts the direct current sputtering method to obtain the anatase crystal film, and does not clearly clarify the film microstructure, including the grain size, orientation, and porosity characteristics of the film, and also This film was not used for DSSC

Method used

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  • A dye sensitized solar battery anode and its making method
  • A dye sensitized solar battery anode and its making method

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Experimental program
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Embodiment 1

[0016] Embodiment 1, have (101) preferred growth nano anatase TiO 2 Preparation method of thin film anode

[0017] Substrates used to prepare thin films were ultrasonically cleaned in acetone and absolute ethanol solutions for 15 minutes, then rinsed with deionized water, and dried for later use. A titanium target with a purity of 99.9% is fixed on a magnetron cathode target holder, and a substrate for preparing a thin film after cleaning and drying is fixed on a sample base of a vacuum chamber of a magnetron sputtering system. The magnetic field strength in the sputtering area on the target surface is about 300 Gauss, the distance from the target surface to the substrate is 60mm, and the angle between the sample surface and the normal of the target surface is 30°. Bake the vacuum chamber before preparation, and wait for the background vacuum to 1×10 -3 After Pa, argon gas was introduced to 1Pa, and then the target was cleaned by sputtering. After the titanium target is cle...

Embodiment 2

[0019] Embodiment 2, preparation dye-sensitized solar cell

[0020] The film was heated to 100°C for 10 min and then soaked in 30 mM N719 dye to sensitize at room temperature for 24 hours. Combine the above electrode with Pt counter, LiI and I 2 acetonitrile solution to assemble dye-sensitized solar cells.

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Abstract

The invention belongs to the field of dye sensitization solar cell materials and relates to an anodic film of the dye sensitization solar cell (DSSC) and the preparation method. The anode is (101) preferentially-growing anatase crystallographic form TiO2 porous membrane; the cross section of a TiO2 grain is oval with a long axis of about 100-145nm and a short axis of about 30-50nm; pores are distributed among the columnar grains of TiO2 and the aperture is between 2-100nm. The TiO2 anodic film is manufactured by adopting an intermediate frequency (40KHz) or radio frequency (13.56MHz) reaction magnetron sputtering method: Titanium is taken as a target and O2 and Argon are taken as discharge gases, the substrate is conductive glass or flexible conductive substrate; the substrate temperature is kept under 120 DEG C during the deposition process. The (101) preferentially-growing anatase film is prepared by adjusting the overall sputtering pressure and the partial pressure of oxygen and controlling the bias voltage; the film is led to have porous structure by controlling the deposition rate and the included angle between the substrate and the target face. The preparation method is especially suitable for the preparation of the flexible DSSC TiO2 anodic film.

Description

technical field [0001] The invention belongs to the technical field of dye-sensitized solar cells, and in particular relates to a method for manufacturing a dye-sensitized nanocrystalline solar cell anode. Background technique [0002] In 1949, Putzeiko and Trenin adsorbed organic photosensitive dyes such as rhodamine B, eosin, erythrosine, and cyanine on compacted wide-bandgap oxide ZnO powders, and observed the photoelectric effect of visible light. In 1991, Swiss scientists nanoporous TiO 2 A solar cell was prepared by using the semiconductor film as a photoelectrode, named as a dye-sensitized nanocrystalline solar cell, and the photoelectric conversion efficiency of the obtained cell reached 7%. Since then, dye-sensitized nanocrystalline solar cells (DSSC) were born and developed rapidly. So far, the conversion efficiency of DSSC has exceeded 11%. [0003] DSSC consists of five parts: substrate, anode, dye, counter electrode and electrolyte. The anode is anatase na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/04H01G9/20H01M14/00H01M4/02H01M4/04H01L31/0224H01L31/18H01L51/44H01L51/48H01L21/28C23C14/08C23C14/35C23C14/54
CPCY02E10/542Y02E10/549Y02E60/10Y02P70/50
Inventor 黄宁康邹宇王治安兰晓华
Owner SICHUAN UNIV
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