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A kind of hydrotalcite pyrolysis material used for electron transport layer of perovskite solar cell and its preparation method, perovskite solar cell
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A technology for solar cells and electron transport layers, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problem of low energy conversion efficiency of dye-sensitized cells, and achieve improved deliquescence resistance, simple preparation, and improved stability. Effect
Active Publication Date: 2020-09-04
BEIJING UNIV OF CHEM TECH
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However, the energy conversion efficiency of dye-sensitized cells is not very high
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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) an...
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 used for the electron transport layer of a perovskite solar cell, a preparation method thereof, and a perovskite solar cell. In the present invention, zinc-aluminum hydrotalcite is prepared by colloidal milling method using zinc source and aluminum source, and the pyrolysis product aluminum-doped zinc oxide two-dimensional nanosheet is dispersed with an organic solvent and spin-coated on the substrate FTO, 500-600 Annealing at °C forms an electron transport layer. The stability of perovskite minerals is improved by utilizing the water-resistant and stable characteristics of hydrotalcite nanosheets. At the same time, carbon electrodes are selected as the electrode material, which improves the sealing performance and improves the deliquescence resistance of the perovskite layer. Lifetime of perovskite cells. In addition, the battery provided by the invention is simple to prepare, can simplify the requirements for device packaging, increase the service life of the device, and reduce 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. ...
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