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Hydrotalcite pyrolysis material for electron transfer layer of perovskite solar cell, preparation method thereof, and perovskite solar cell

A technology of solar cells and electron transport layers, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problem that the energy conversion efficiency of dye-sensitized cells is not very high, achieve improved deliquescence resistance, stability, and device The effect of longevity

Active Publication Date: 2018-09-07
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the energy conversion efficiency of dye-sensitized cells is not very high

Method used

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  • Hydrotalcite pyrolysis material for electron transfer layer of perovskite solar cell, preparation method thereof, and perovskite solar cell
  • Hydrotalcite pyrolysis material for electron transfer layer of perovskite solar cell, preparation method thereof, and perovskite solar cell
  • Hydrotalcite pyrolysis material for electron transfer layer of perovskite solar cell, preparation method thereof, and perovskite solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Prepare hydrotalcite by colloid milling method, the specific method is to weigh 14.88g Zn(NO 3 ) 2 ·6H 2 O and 9.38g Al(NO 3 ) 3 9H 2 O was dissolved in deionized water to make 100mL mixed salt solution, and 6.00g NaOH was weighed and dissolved in deionized water to make 100mL alkali solution.

[0025] 2. Add the two solutions into the colloid mill at the same time, place the obtained mixed slurry in a high-pressure reactor at 110°C for 24 hours, wash with deionized water for 3 times, and dry to obtain zinc-aluminum hydrotalcite.

[0026] 3. Grind the dried zinc-aluminum hydrotalcite with an agate mortar to a uniform powder, put the obtained powder into a porcelain cup and place it in a muffle furnace, -1 The heating rate was increased to 500°C, kept at 500°C for 1 h, and cooled to room temperature naturally to obtain aluminum-doped zinc oxide, marked as 2-ZA-500.

[0027] 4. Take 0.1 g of 2-ZA-500, add 100 μL of terpineol and 5 mL of absolute ethanol (EtOH), a...

Embodiment 2

[0034] 1. Prepare hydrotalcite by colloid milling method, the specific method is to weigh 14.88g Zn(NO 3 ) 2 ·6H 2 O and 6.25g Al(NO 3 ) 3 9H2 O was dissolved in deionized water to make 100 mL of mixed salt solution, 5.35 g of NaOH was weighed and dissolved in deionized water to make 100 mL of alkali solution, and the others were the same as in Example 1 to prepare aluminum-doped zinc oxide, marked as 3-ZA-500.

[0035] 2. Using 3-ZA-500 as in Example 2 to prepare an organic-inorganic hybrid solar cell.

Embodiment 3

[0037] 1. Prepare hydrotalcite by colloid milling method, the specific method is to weigh 14.88g Zn(NO 3 ) 2 ·6H 2 O and 4.7g Al(NO 3 ) 3 9H 2 O was dissolved in deionized water to make 100mL mixed salt solution, 5.35g NaOH was weighed and dissolved in deionized water to make 100mL alkali solution, and the others were the same as in Example 1 to prepare aluminum-doped zinc oxide, labeled 4-ZA-500.

[0038] 2. Using 4-ZA-500 as in Example 1 to prepare an organic-inorganic hybrid solar cell.

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Abstract

The invention relates to a hydrotalcite pyrolysis material for an electron transfer layer of a perovskite solar cell, a preparation method thereof, and a perovskite solar cell, wherein a zinc source and an aluminum source are used for preparing zinc-aluminum hydrotalcite in a colloid mill method; and then the pyrolytic product of aluminum-doped zinc oxide two-dimensional nanosheet is dispersed byusing an organic solvent, spin-coated onto a substrate FTO, and annealed at 500-600 DEG C to form an electron transfer layer. The water-resistant and stable characteristics of the hydrotalcite nanosheets improve the stability of the perovskite minerals; a carbon electrode is selected as the anode of the electrode material so that the sealing property is improved, and the deliquescence-proof property of the perovskite layer can be further improved; the service life of the perovskite cell is prolonged. In addition, the cell provided by the invention is simple to prepare, thereby simplifying therequirements for device package, improving the service life of the device, and reducing the manufacturing cost.

Description

technical field [0001] The invention belongs to the technical field of photoelectric materials, and in particular relates to a hydrotalcite pyrolysis material used for an electron transport layer of a perovskite solar cell, a preparation method thereof, and a perovskite solar cell. Background technique [0002] Layered double hydroxides (LDHs), also known as hydrotalcites, are a new type of inorganic functional materials with a layered structure, which are composed of positively charged layered metal cations and interlayer anions. The general chemical structural formula is available [M II 1-x m III x (OH) 2 ] z+ (A n- ) z / n ·yH 2 O to describe, where M II and M III Divalent and trivalent metals respectively; A n- are interlayer anions. This material is characterized by easy synthesis, relatively large specific surface volume and high anion exchange capacity, and the doped oxides prepared with LDHs as precursors have a highly uniform distribution of doping ions. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/00H10K85/00H10K30/65H10K30/00Y02E10/549H10K85/50
Inventor 陆军陈文鹏
Owner BEIJING UNIV OF CHEM TECH