Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of carbon opposite electrode perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems affecting photogenerated current and fill factor, limit photogenerated carrier collection, and affect photoelectric conversion efficiency, etc., to improve photoelectric conversion Efficiency, the preparation method is simple and easy, and the effect of the method is simple

Active Publication Date: 2017-05-10
HUAZHONG UNIV OF SCI & TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this solar cell with a carbon counter electrode belongs to a planar heterojunction structure, which requires high contact between the layers of the cell. The conductive carbon film prepared by screen printing with conductive carbon paste Due to the influence of graphite particles, the contact interface is usually jagged, which limits the collection of photo-generated carriers, which will greatly affect the photo-generated current and fill factor, and ultimately affect its photoelectric conversion efficiency. The achieved efficiency has not surpassed the photoelectric conversion efficiency achieved by the battery with gold and silver as the counter electrode for the time being.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of carbon opposite electrode perovskite solar cell and preparation method thereof
  • A kind of carbon opposite electrode perovskite solar cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation steps of the hole transport layer: ultrasonically clean the purchased carbon cloth in acetone, absolute ethanol, and deionized water for 15 minutes, and then dry it at 100°C for later use. The hole transport layer of the battery uses NiO nanosheets generated by hydrothermal method. Carry out impregnation treatment to the clean carbon cloth in raw material mixed solution, described raw material mixed solution is 10mmol / LNiCl 2 ·6H 2 O, 40mmol / L CO(NH 2 ) 2 and 20mmol / L NH 4 The aqueous solution of F; then perform the reaction treatment, put the carbon arrangement adhered to the mixed solution of raw materials into the autoclave for reaction, the reaction temperature is 120°C, and the reaction time is 8h; after cooling to room temperature, take it out from the autoclave carbon cloth, and washed several times with ethanol and deionized water to remove impurities deposited on the surface, and then dried in a vacuum oven at 60°C for 12 hours. After cleaning ...

Embodiment 2

[0042] Preparation steps of the hole transport layer: ultrasonically clean the purchased carbon cloth in acetone, absolute ethanol, and deionized water for 15 minutes, and then dry it at 100°C for later use. The hole transport layer of the battery uses NiO nanosheets generated by hydrothermal method. Carry out impregnation treatment to the cleaned carbon cloth in raw material mixed solution, described raw material mixed solution is 9mmol / LNiCl 2 ·6H 2 O, 50mmol / L CO(NH 2 ) 2 and 25mmol / L NH 4 The aqueous solution of F; then perform the reaction treatment, put the carbon arrangement adhered to the mixed solution of raw materials into the autoclave for reaction, the reaction temperature is 130°C, and the reaction time is 10h; after cooling to room temperature, take it out from the autoclave carbon cloth, and washed several times with ethanol and deionized water to remove impurities deposited on the surface, and then dried in a vacuum oven at 60°C for 12 hours. After cleanin...

Embodiment 3

[0050] Preparation steps of the hole transport layer: ultrasonically clean the purchased carbon cloth in acetone, absolute ethanol, and deionized water for 15 minutes, and then dry it at 100°C for later use. The hole transport layer of the battery uses NiO nanosheets generated by hydrothermal method. Carry out immersion treatment to the cleaned carbon cloth in raw material mixed solution, described raw material mixed solution is 11mmol / LNiCl 2 ·6H 2 O, 30mmol / L CO(NH 2 ) 2and 15mmol / L NH 4 The aqueous solution of F; then perform the reaction treatment, put the carbon arrangement adhered to the mixed solution of raw materials into the autoclave for reaction, the reaction temperature is 140°C, and the reaction time is 7h; after cooling to room temperature, take it out from the autoclave carbon cloth, and washed several times with ethanol and deionized water to remove impurities deposited on the surface, and then dried in a vacuum oven at 60°C for 12 hours. After cleaning an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a perovskite solar cell with a carbon counter electrode. The battery includes a photoanode, a counter electrode and a hole transport layer. The counter electrode is a carbon cloth, and the carbon cloth is sequentially subjected to NiO precursor mixed solution impregnation treatment and reaction treatment. , so that the carbon cloth is uniformly and densely attached to the hole transport layer composed of NiO nanosheets; the carbon cloth is embedded in the TiO2 porous layer in the photoanode. Also provided is a method for preparing a carbon counter-electrode perovskite solar cell, including the step of preparing a hole transport layer, performing an impregnation treatment on the carbon cloth in a precursor mixed solution, and then performing a reaction treatment, mixing the adhered precursor The carbon of the solution is placed in a high-pressure reactor for reaction; then the carbon cloth is taken out for cleaning and drying; finally, an annealing treatment is performed to obtain a carbon cloth with a hole transport layer attached thereto. The invention effectively increases the contact area between layers in the battery, and finally improves the photoelectric conversion efficiency.

Description

technical field [0001] The invention belongs to the technical field of micro-nano manufacturing, and in particular relates to a 3D semi-embedded carbon counter-electrode perovskite solar cell and a preparation method thereof. Background technique [0002] Perovskite solar cell is a new type of solar cell, which is a new star in the photovoltaic field following the development of dye-sensitized solar cells. It uses organo-metal halides with a perovskite structure as the photosensitive material of the battery. This material has a broad absorption spectrum covering the wavelength range of visible light, and has outstanding advantages in photoelectric conversion performance. Perovskite materials can be prepared by solution, and the process is simple, which can reduce the process cost of preparing solar cells. Since the perovskite solar cell was prepared in 2009, the photoelectric conversion efficiency has increased from the initial 3.8% to 20.4%, and its theoretical photoelect...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/44H01L51/48
CPCH10K30/00H10K30/81Y02E10/549
Inventor 廖广兰刘智勇史铁林谭先华孙博吴悠妮
Owner HUAZHONG UNIV OF SCI & TECH