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A kind of carbon paste and electrode for perovskite solar cell

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of electrode conductivity to be improved, achieve excellent cell performance, excellent photoelectric conversion efficiency, and reduce transmission resistance

Active Publication Date: 2020-08-14
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conductivity of the counter electrode made of this carbon paste still needs to be improved

Method used

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  • A kind of carbon paste and electrode for perovskite solar cell
  • A kind of carbon paste and electrode for perovskite solar cell
  • A kind of carbon paste and electrode for perovskite solar cell

Examples

Experimental program
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preparation example Construction

[0080] The preparation step of the above-mentioned counter electrode can be, first coating or filling the second carbon slurry on the perovskite film layer to form a second carbon electrode, and then coating the above-mentioned carbon slurry on the second carbon electrode to form a carbon electrode. electrode, thus forming a composite carbon electrode.

[0081] The thickness of the second carbon electrode may be 0.1-10 μm.

[0082] A perovskite solar cell is also disclosed herein, which includes the above-mentioned counter electrode for the perovskite solar cell.

[0083] figure 1 A cross-sectional view of the structure of a perovskite solar cell according to one embodiment is shown. figure 1 The shown perovskite solar cell is a battery module composed of seven perovskite solar cells in series structure. However, it should be understood that in the present invention, the perovskite solar cell may be a perovskite solar cell with a multi-junction serial structure, or a single...

Embodiment 1

[0097] Carbon paste production:

[0098] (1) Weigh graphite flakes (particle size 2-7 μm), as the conductive skeleton material, accounting for 22.5% of the total mass of the carbon slurry.

[0099] (2) Add binder (50mPa·s ethyl cellulose) and nano zirconium oxide (particle size: 50nm) each accounting for 3.75% of the total mass of the carbon slurry.

[0100] (3) Dry in an oven at 80°C for 40 minutes.

[0101] (4) Add the solvent terpineol after removing water.

[0102] (5) Add φ5mm zirconia ball milling beads with a slurry weight of 62.5%wt.

[0103] (6) Use a mixing and defoaming machine for ball mill dispersion, set mixing for 20 minutes, 1000 rpm, and defoaming for 10 minutes, 2200 rpm.

[0104] (7) After the slurry is mixed, it will generate heat. After cooling to room temperature, repeat step (6).

[0105] The slurry is prepared and ready for use.

[0106] Preparation of 7-cell series structure perovskite battery:

[0107] Use a laser to etch the FTO layer on the tr...

Embodiment 2

[0115] Carbon paste production:

[0116] (1) Weigh graphite flakes (particle size 2-7μm) and carbon black (particle size 39.5nm, resistivity 3.9Ω cm), mass ratio 3:1, graphite and carbon black account for the total mass of carbon slurry 36.75%.

[0117] (2) Add binder (same as Example 1) and nano zirconia (same as Example 1) each accounting for 3.75% of the total mass of carbon slurry.

[0118] (3) Dry in an oven at 80°C for 40 minutes.

[0119] (4) Add the solvent terpineol after removing water.

[0120] (5) Add φ5mm zirconia ball milling beads with a slurry weight of 62.5%wt.

[0121] (6) Use a mixing and defoaming machine for ball milling to disperse, set mixing for 20 minutes, 1000 rpm, and defoaming for 10 minutes, 2200 rpm.

[0122] (7) After the slurry is mixed, it will generate heat. After cooling to room temperature, repeat step (6).

[0123] The slurry is prepared and ready for use.

[0124] Fabrication of 7-junction tandem perovskite solar cells

[0125] With...

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Abstract

The invention relates to a carbon slurry and an electrode for a perovskite solar cell, the carbon slurry includes a conductive framework material, a filling material, a binder and a solvent, wherein the conductive framework material is graphite sheet, granular graphite At least one of olefinic materials and carbon fibers, the filler material is selected from at least one of carbon black, carbon nanotubes, graphene, and graphene oxide.

Description

technical field [0001] The invention belongs to the field of solar cells, in particular to a novel carbon paste and electrode for perovskite solar cells. Background technique [0002] In the past 10 years, perovskite solar cells have developed rapidly, and their advantages are very prominent: 1. Simple manufacture and low cost; battery; 3. The charge diffusion length is as high as micron level, and the charge life is longer; 4. Its unique defect characteristics enable the perovskite crystal material to exhibit both the properties of n-type semiconductors and p-type semiconductors, so its The application is more diversified; 5. Flexible and transparent batteries can be prepared. Therefore, perovskite solar cells and related materials have become a research direction in the field of photovoltaics. At present, the photoelectric conversion efficiency of more than 23% has been obtained, and the application prospect is very broad. [0003] Perovskite solar cells are mainly compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/24H01L51/44
CPCH01B1/24H10K30/81Y02E10/549
Inventor 杨松旺陈宗琦李嘉庆
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI