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Preparation method and application of perovskite solar cell with copper phthalocyanine carbon dots as hole transport layer

A technology of hole transport layer and solar cell, which is applied in the field of solar cell materials, can solve the problems of high cost of hole transport layer, internal quality affecting PSC long-term operation and thermal stability, etc., to reduce manufacturing cost, improve optical performance and The effect of thermal stability

Pending Publication Date: 2022-02-11
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of these hole-transporting layers is prohibitively high for large-scale applications, and the intrinsic quality of the organic components is clearly a detrimental factor affecting the long-term operation and thermal stability of PSCs.

Method used

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  • Preparation method and application of perovskite solar cell with copper phthalocyanine carbon dots as hole transport layer
  • Preparation method and application of perovskite solar cell with copper phthalocyanine carbon dots as hole transport layer
  • Preparation method and application of perovskite solar cell with copper phthalocyanine carbon dots as hole transport layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Transparent conductive substrate: the substrate is selected from FTO conductive glass, and the FTO glass substrate is ultrasonically cleaned in detergent, deionized water, isopropanol and absolute ethanol for 15 minutes;

[0024] (2) Electron transport layer: One end of the clean FTO glass sheet is blank as the negative electrode; the rest is first coated with 0.4M titanium tetraisopropoxide ethanol solution to block TiO 2 layer, spin-coated at 1000rpm for 3s, then spin-coated at 2500rpm for 30s, and then heated at 125°C for 5min; then spin-coated mesoporous TiO 2 ethanol dispersion (TiO 2 Mass ratio with ethanol 1:3.5), spin coating at 1000rpm for 3s, then spin coating at 3500rpm for 30s, and finally sintering at 500°C for 30min;

[0025] (3) Perovskite absorbing layer: 0.461g PbI 2 and 0.159g MAI were dissolved in 0.72mL DMF and 0.072mL DMSO to prepare a perovskite precursor solution, then spin-coated at 1000rpm for 10s, and then 200μL of chlorobenzene was added...

Embodiment 2

[0036] (1) Transparent conductive substrate: the substrate is selected from FTO conductive glass, and the FTO glass substrate is ultrasonically cleaned in detergent, deionized water, isopropanol and absolute ethanol for 15 minutes;

[0037] (2) Electron transport layer: One end of the clean FTO glass sheet is blank as the negative electrode; the rest is first coated with 0.4M titanium tetraisopropoxide ethanol solution to block TiO 2 layer, spin-coated at 1000rpm for 3s, then spin-coated at 2500rpm for 30s, and then heated at 125°C for 5min; then spin-coated mesoporous TiO 2 ethanol dispersion (TiO 2 Mass ratio with ethanol 1:3.5), spin coating at 1000rpm for 3s, then spin coating at 3500rpm for 30s, and finally sintering at 500°C for 30min;

[0038] (3) Perovskite absorbing layer: 0.461g PbI 2 and 0.159g MAI were dissolved in 0.72mL DMF and 0.072mL DMSO to prepare a perovskite precursor solution, then spin-coated at 1000rpm for 10s, and then 200μL of chlorobenzene was added...

Embodiment 3

[0044] (1) Transparent conductive substrate: the substrate is selected from FTO conductive glass, and the FTO glass substrate is ultrasonically cleaned in detergent, deionized water, isopropanol and absolute ethanol for 15 minutes;

[0045] (2) Electron transport layer: One end of the clean FTO glass sheet is blank as the negative electrode; the rest is first coated with 0.4M titanium tetraisopropoxide ethanol solution to block TiO 2 layer, spin-coated at 1000rpm for 3s, then spin-coated at 2500rpm for 30s, and then heated at 125°C for 5min; then spin-coated mesoporous TiO 2 ethanol dispersion (TiO 2 Mass ratio with ethanol 1:3.5), spin coating at 1000rpm for 3s, then spin coating at 3500rpm for 30s, and finally sintering at 500°C for 30min;

[0046] (3) Perovskite absorbing layer: 0.461g PbI 2 and 0.159g MAI were dissolved in 0.72mL DMF and 0.072mL DMSO to prepare a perovskite precursor solution, then spin-coated at 1000rpm for 10s, and then 200μL of chlorobenzene was added...

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Abstract

The invention discloses a preparation method and application of a perovskite solar cell with copper phthalocyanine carbon dots as a hole transport layer. The preparation method comprises the following steps: taking a blank at one end of a conductive substrate as a negative electrode; preparing an electron transport layer for the rest part, depositing a perovskite absorption layer, coating the copper phthalocyanine carbon dot dispersion liquid, performing annealing treatment to obtain a copper phthalocyanine carbon dot hole transport layer, blade-coating carbon paste, heating and drying to obtain the perovskite solar cell. Insoluble macrocyclic molecule copper phthalocyanine is treated by a hydrothermal method, so that solubilization and carbonization processes are combined, carbon dots are synthesized from bottom to top, the copper phthalocyanine carbon dot hole transport layer is prepared from a solution without a dopant, and the cell efficiency is as high as 13% when the copper phthalocyanine carbon dot hole transport layer is applied to a perovskite solar cell. According to the invention, the bottleneck that the insoluble organic matter cannot be used as a solution to process the hole transport layer in the perovskite solar cell is broken through, the optical performance and the thermal stability of the perovskite solar cell are improved, and the manufacturing cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of solar cell materials, and in particular relates to a preparation method and application of a perovskite solar cell with copper phthalocyanine carbon dots as a hole transport layer. Background technique [0002] Since solution-processable perovskite solar cells (PSCs) combine high efficiency and ease of fabrication, they have shown great promise as a competitive low-cost solar cell to compete with conventional inorganic cells. The power conversion efficiency (PCE) of perovskite solar cells has rapidly increased from 3.8% in 2009 to 25.5% in 2021. As perovskite solar cell efficiencies approach theoretical limits, avenues to improve the overall performance of perovskite solar cells are under intense scrutiny. In particular, there has been renewed interest in small organic molecule hole transport materials (HTMs) other than spiro-OMeTAD. Commercialization can be problematic because synthesis and purificatio...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/48H01L51/46C09K11/65
CPCC09K11/65H10K71/12H10K85/30H10K30/00Y02E10/549
Inventor 史文颖孔健姚健
Owner BEIJING UNIV OF CHEM TECH
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