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A dual-dye co-sensitized solar cell

A technology of solar cells and dyes, which is applied in the field of solar cells, can solve problems such as instability and limited application range of dyes, and achieve stable system, good photoelectric conversion performance, and good stability

Active Publication Date: 2021-11-12
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, studies have shown that when N3 and perovskite are co-adsorbed on titanium dioxide, the photoelectric conversion of solar cells is higher, but due to the hydrolysis of perovskite, this system is extremely unstable, which greatly limits the application range of dye sensitization.

Method used

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  • A dual-dye co-sensitized solar cell
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  • A dual-dye co-sensitized solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Taken 1cm size of the conductive glass FTO × 1.3cm of the TiO 2 8 P25-20nm type titanium dioxide applied in the conductive surface of the FTO conductive glass, natural air cooling after 2h and sintered at 450 ℃ stand;

[0020] 6 0.0141gN3 dyes were weighed and 0.0078g 3 · 4 · 9 · 10- tetracarboxylic anhydride dye 7, into the same beaker and dissolved in 20ml DMSO solution, formulated to 0.1m mol / L 3 · N3 of dye and 4.9 · 10- tetracarboxylic anhydride dye double dye mixture solution; FTO conductive glass sends the processed into double dye mixture solution, soaking the adsorbent 24 hours, taken out, washed with absolute ethanol and dried;

[0021] Take 0.4610g lead iodide PbI 2 , 0.1580g methylamine hydroiodide, put into a beaker, dissolved in 20ml DMSO solution, formulated to 0.1mol / L solution of perovskite, perovskite solution was then pipetted dropwise onto the FTO conductive glass N3 dye -3 · 4.9 · 10- tetracarboxylic anhydride mixed dye layer, heated at 100 ℃ 30 min...

Embodiment 2

[0024] Taken 1cm size of the conductive glass FTO × 1.3cm of the TiO 2 8 P25-20nm type titanium dioxide applied in the conductive surface of the FTO conductive glass, natural air cooling after 2h and sintered at 450 ℃ stand;

[0025] Weigh 0.0078 g 0.0141gN3 dyes 6 and 9 · 3 · 4 · 7 10- tetracarboxylic anhydride, dissolved with 20ml DMSO solution, formulated to 0.1m mol / L of N3 dye solution and 3 * 4.9 · 10- four carboxylic acid anhydride dye solution; after treatment FTO conductive glass good N3 6 into the dye solution, the adsorption soak for 24 hours, taken out, and then into 3 · 4.9 · 10- tetracarboxylic anhydride 7 dye solution, the adsorption soaking 24 hours, taken out, washed with absolute ethanol and dried;

[0026] Take 0.4610g lead iodide PbI 2 , 0.1580g methylamine hydroiodide, put into a beaker, dissolved in 20ml DMSO solution, formulated to 0.1mol / L solution of perovskite, perovskite solution was then pipetted dropwise onto the FTO conductive glass N3 dye -3 · 4....

Embodiment 3

[0029] Taken 1cm size of the conductive glass FTO × 1.3cm of the TiO 2 8 P25-20nm type titanium dioxide applied in the conductive surface of the FTO conductive glass, natural air cooling after 2h and sintered at 450 ℃ stand;

[0030] Were weighed 0.0141g N3 dye and 0.0078 g 3. 6 4. 9 · 10- tetracarboxylic anhydride dye 7, with 20mlDMSO solution was dissolved to prepare a 0.1m mol / L of N3 dye solution and 3 * 4.9 · 10- tetracarboxylic anhydride solution; Deal FTO conductive glass into 3 · 4.9 · 10- tetracarboxylic anhydride solution after soaking adsorption for 24 hours, taken out, and then into a solution of N3, adsorption soak for 24 hours, taken out, washed with anhydrous ethanol and dried;

[0031] Take 0.4610g lead iodide PbI 2 , 0.1580g methylamine hydroiodide, put into a beaker, dissolved in 20ml DMSO solution, formulated to 0.1mol / L solution of perovskite, perovskite solution was then pipetted dropwise onto the FTO conductive glass N3 dye -3 · 4.9 · 10- tetracarboxylic ...

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Abstract

The invention discloses a dual-dye co-sensitivity solar cell, comprising a reference electrode, a working electrode, a dual dye system, an electrolyte solution and a counter electrode, the dual dye system is attached to the working electrode, and the reference electrode, the working electrode and the counter electrode are placed In the electrolyte solution, the working electrode consists of a conductive substrate, a dual dye system attached to the conductive substrate, and copper connected to the dual dye system. The dual dye system includes N3 dye, 3.4.9.10-tetracarboxylic anhydride dye and titanium dioxide. The dual-dye co-sensitized solar cell has good photoelectric conversion performance, and the photocurrent is as high as 1.46×10 under natural light. ‑5 A / cm 2 , which is an order of magnitude higher than the photocurrent of the perovskite system solar cell using only N3 dyes; the system is stable, and the generated photocurrent has good stability.

Description

Technical field [0001] The present invention relates to a solar cell, and more particularly, to a dual dye-sensitized solar cell co. Background technique [0002] The dye-sensitized system is an important part of the dye-sensitized solar cell, dye-sensitized system is based on low-cost nano-titanium dioxide as the main material and the photosensitive material, the excitation sunlight conditions, an energy conversion photoelectric conversion means, because when some of the photosensitive material is adsorbed on the titanium dioxide, the photoelectric conversion efficiency of the sunlight is high, such as perovskites, N3 dye, the sensitizing dye is widely used in energy conversion devices such as solar cells. Preparation of Dye-sensitized system is generally titanium dioxide adsorbent photosensitive material, curing or sintering. Studies have shown that currently, N3, perovskite were adsorbed on titania, a high photoelectric conversion of the solar cell, but due to hydrolysis of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/042
CPCH01G9/2063Y02E10/542
Inventor 徐坤张磊索嘉琦
Owner NANJING UNIV OF INFORMATION SCI & TECH