Self-assembled monolayer and perovskite solar cell preparation methods and perovskite solar cell

A technology for self-assembly of single molecules and solar cells, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems such as low stability, and achieve the effect of improving performance, optimizing interface, and optimizing performance

Active Publication Date: 2019-10-08
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect described by this patented technology includes modifying certain parts or components within an organic layer that enhance its interaction with other molecules on top of it (the surface). By doing these modifications, we aimed at creating better quality films without adding extra steps during manufacturing process. Additionally, our innovative approach involves making devices thinner while maintaining their ability to generate electricity efficiently due to increased contact area provided through specific interfaces. Overall, this technology allows us to improve both properties such as energy conversion rate from sunlight into electrical current, power output, and overall functionality of photonic crystals used in light-controlled display systems.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the efficiency and reliability of photonically excited pervoskites (PV) solar batteries while addressing their challenges from environmental concerns like acid rain or water pollutants. Previous methods were developed based primarily on crystal growth techniques, resulting in poor quality material and limited durable power generation capabilities. To overcome these issues, recent advances made involve developing novel compositions containing both metal cations and chloroancies.

Method used

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  • Self-assembled monolayer and perovskite solar cell preparation methods and perovskite solar cell
  • Self-assembled monolayer and perovskite solar cell preparation methods and perovskite solar cell
  • Self-assembled monolayer and perovskite solar cell preparation methods and perovskite solar cell

Examples

Experimental program
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Effect test

Embodiment 1

[0037] To prepare the standard parts of unmodified perovskite solar cells, the preparation steps are as follows:

[0038] 1) Etch ITO, and wash it with detergent solution, deionized water, acetone, and ethanol for 20 minutes, and treat it with ultraviolet ozone for 4 minutes. First, nickel oxide nanoparticles were dissolved in deionized water at a concentration of 20 mg / ml, and ultrasonically treated for 5 minutes before spin coating.

[0039] 2) Then spin-coat the nickel oxide solution onto the treated ITO at a speed of 4000rpm for 30s, and then spin-coat at 130 o Annealed at C for 20 minutes.

[0040] 3) Immediately transfer the device to the glove box, spin-coat the perovskite on the nickel oxide layer by stirring the perovskite solution overnight at 4000rpm for 30s, and then spin-coat the perovskite on the nickel oxide layer at 105 o C for 20 minutes at temperature.

[0041] 4) After waiting for cooling to room temperature, the PCBM solution was spin-coated onto the per...

Embodiment 2

[0044] Preparation of monomolecular layer modified perovskite solar cells: the previous steps are the same as steps 1) and 2) in Example 1, and the subsequent steps are the same as 3) to 5). The difference is that step 2) and step 3) are supplemented with the preparation of a modification layer. The specific steps are as follows:

[0045] Dissolve 4-carboxyphenylisothiocyanate in ethanol solution to obtain a 20mg / ml solution, and filter it with a 22um filter head. Then obtain 0.5mg / ml, 1mg / ml, 2mg / ml monomolecular layer solution by diluting, the solution of three kinds of concentrations is spin-coated 30s according to the speed of 2000rpm in turn, then at 70 o C for 5 minutes at temperature. After waiting for cooling, ethanol was used to spin-coat twice at 2000rpm, the spin-coating time was 30s, and then at 70 o C for 5 minutes at temperature.

[0046] The battery structure of the present embodiment 2 is as figure 1 As shown, the new structure proposed by the present inven...

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Abstract

The invention discloses a self-assembled monolayer preparation method, which comprises the following steps: 1) a carboxylic acid derivative with a halogen-like group is dissolved in an organic solvent, heating and dissolving at 60 DEG C to 70 DEG C are carried out, and a precursor solution is obtained; 2) spin coating of the precursor solution on a nickel oxide/ITO substrate at room temperature iscarried out, and being placed on a hot stage for annealing is carried out; and 3) after cooling to the room temperature, twice spin coating and washing out are instantly carried out by the organic solvent, annealing is carried out again, and the self-assembled monolayer is obtained. The invention discloses a perovskite solar cell preparation method. The invention also discloses a perovskite solarcell, which comprises the ITO, a hole transport layer, a self-assembled monolayer, a perovskite layer, an electron transport layer, a BCP and a silver electrode laminated in order from bottom to top.Through modification of the monolayer, obvious improvement is gained in multiple aspects such as voltage and efficiency of the device, and the battery performance is improved.

Description

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Claims

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Application Information

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Owner NANJING UNIV OF POSTS & TELECOMM
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