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Demixing-adsorption cooperated-sensitization wide optical spectrum dye sensitization solar battery

A dye sensitization, solar cell technology, applied in photovoltaic power generation, secondary batteries, circuits, etc., can solve problems such as efficiency improvement limitations

Inactive Publication Date: 2008-12-10
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the mixed adsorption method of dyes is used, the efficiency improvement after co-sensitization is often limited due to the mutual inhibition effect between the dyes.

Method used

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  • Demixing-adsorption cooperated-sensitization wide optical spectrum dye sensitization solar battery
  • Demixing-adsorption cooperated-sensitization wide optical spectrum dye sensitization solar battery

Examples

Experimental program
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Effect test

Embodiment 1

[0016] The two dyes, JK2 and SQ1, have certain photoresponse complementarities. see figure 2 , in the first layer anode TiO 2 After absorbing JK2 dye (or 4-tBP insulation treatment) on the film, a single-layer preliminary photoanode is formed, and a layer of TiO is prepared on the surface by vacuum cold spraying method. 2 The film then absorbs SQ1 dye (or undergoes insulation treatment) to form a photoanode with two dyes adsorbed in two layers, which is packaged with the cathode, electrolyte and packaging components to form the battery of the present invention.

Embodiment 2

[0018] The squaraine dye has good light absorption at 600-700nm, and has a certain complementarity with the light response of the N719 dye. In the first layer anode TiO 2 After adsorbing N719 dye (or 4-tBP insulation treatment) on the film, a preliminary monolayer photoanode is formed, and a layer of ZnO film is prepared on the surface by pressing film method, and squarylium dye is adsorbed (or after insulation treatment) , which constitutes a photoanode with two dyes adsorbed in two layers, and is packaged with a cathode, an electrolyte and a packaging component to form a battery according to the present invention.

Embodiment 3

[0020] Based on the photoanode described in embodiment 2, continue to prepare a layer of Nb on its surface 2 o 5 Coated SnO 2 After the film was re-adsorbed with a third dye with photoresponsive properties in a longer wavelength range, the reassembled cell exhibited a synergistic sensitization effect of layered adsorption of the three dyes. By repeating the above-mentioned similar steps, more efficient and low-cost solar cells with layered adsorption of dyes can also be produced.

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PUM

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Abstract

The invention provides a wide spectral dye sensitization solar battery which is hierarchically adsorbed and synergistically sensitized, composed of a light anode, a cathode, an electrolyte and a packaging component. Part of layers within the light anode adsorbs various dyes with complementation characteristic in a spectrum range. The dyes hierarchically adsorbed are capable of implementing wider spectrum absorption and photoelectric conversion, and further preventing from adverse impacts among dyes caused when adsorbing dyes with mixing mode and problems of voltage reduction brought by it. It is also able to implement light absorption within a wider range so as to obtain higher output current and energy conversion efficiency. The invention is not only used for high-effectiveness and cost minimization of substrate batteries of conduction glasses, but used for high-effectiveness and cost minimization of flexible batteries. Such characteristics are all in favour of improving output current and energy conversion efficiency of batteries and reducing cost thereof.

Description

technical field [0001] The invention belongs to the technical field of solar cells, especially dye-sensitized solar cells, and in particular relates to a wide-spectrum dye-sensitized solar cell with layered adsorption and synergistic sensitization. Background technique [0002] Solar cells can directly convert solar energy into electrical energy, which is one of the main forms of solar energy utilization. since 1991 Since the solar energy conversion efficiency of dye-sensitized solar cell (DSC) was reported to be >7% in Nature, DSC has received extensive attention. Compared with other types such as silicon solar cells and compound semiconductor cells, dye-sensitized solar cells have outstanding advantages such as low cost. [0003] Dye-sensitized solar cells are mainly composed of photoanode, cathode, electrolyte and packaging components. Porous TiO deposited on transparent conductive glass substrates (or transparent conductive flexible substrates, wires, screens, etc.) ...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/04H01M14/00H01M10/36H01L31/0224H01L31/18H01L51/46
CPCY02E10/542Y02E10/549Y02P70/50
Inventor 李长久杨冠军范圣强
Owner XI AN JIAOTONG UNIV
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