Method for isolating compound metal grid from back electrode during large-area preparation of dye sensitized solar cell (DSSC)

A composite metal and metal mesh technology, applied in the field of solar photovoltaic utilization, can solve the problems of DSSC not working normally, short circuit, hindering the realization of DSSC industrialization, etc., to reduce internal resistance, avoid internal short circuit, and increase output power. Effect
CN102324328AInactive Publication Date: 2012-01-18PEKING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PEKING UNIV
Publication Date
2012-01-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for isolating a compound metal grid from a back electrode during large-area preparation of a dye sensitized solar cell (DSSC). The method comprises the following steps of: (1) sputtering a compound metal grid of Ti and Al on transparent conducting glass; (2) preparing a TiO2 nanoparticle film on a transparent conducting substrate by using a TiO2 sizing agent with ascreen printing method; and (3) heating the substrate on which the TiO2 sizing agent is printed to fully vaporize or oxidize organic matters in the TiO2 sizing agent, wherein an oxide of a Ti metal on an upper layer of the compound metal grid is taken as an isolated layer. Due to the adoption of the method provided by the invention, the isolation between an Al metal grid and an electrolyte duringthe encapsulation of the dye-sensitized solar cell is realized effectively, and the problem of internal short circuit of the DSSC is solved; and low-cost metals, i.e., Al and Ti are adopted instead of precious metals, i.e., Pt, Au and the like in the conventional process, so that a firm foundation is laid for the industrial mass production of DSSCs.
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Description

technical field

[0001] The invention relates to a method for isolating a composite metal grid and a back electrode in a large-area preparation of a dye-sensitized solar cell, which belongs to the field of solar photoelectric utilization and also belongs to the field of nanotechnology. Background technique

[0002] French scientist Henri Becquerel first observed the phenomenon of photoelectric conversion in 1839, but it was not until the advent of the first practical semiconductor solar cell in 1954 that the idea of ​​"converting solar energy into electrical energy" became a reality. There are many types of solar cells. If the material used is a narrow band gap semiconductor material with certain absorption in the visible region, this type of solar cell is also called a semiconductor solar cell. Although the ability of wide bandgap semiconductors to capture sunlight is very poor, if appropriate polymer dyes are adsorbed onto the semiconductor surface, with the help of strong ...

Claims

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