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Application of compound in solar cell

A technology of solar cells and compounds, applied in the field of solar cells, can solve the problems of low performance of cell devices and decreased device efficiency, and achieve the effects of improving interface contact, improving efficiency and stability, and increasing adhesion

Pending Publication Date: 2022-04-12
LONGI SOLAR TECH (XIAN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless of the device structure, the preparation process of the perovskite layer will inevitably produce some point defects, anti-site ion defects, and atomic clusters in the bulk and interface defects, resulting in a decrease in device efficiency.
Compared with bulk defects, carrier recombination caused by interface defects is an important factor for the lower performance of battery devices

Method used

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  • Application of compound in solar cell
  • Application of compound in solar cell
  • Application of compound in solar cell

Examples

Experimental program
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Effect test

preparation example Construction

[0069] The application provides a method for preparing a solar cell, comprising the steps of:

[0070] Step 1: providing a bottom electrode 11;

[0071] Step 2: preparing a first carrier transport layer 12 on one side surface of the bottom electrode 11;

[0072] Step 3: preparing a modification layer 13 on the surface of the first carrier transport layer 12 facing away from the bottom electrode 11;

[0073] Step 4: preparing a perovskite absorption layer 14 on the surface of the modification layer 13 facing away from the first carrier transport layer 12;

[0074] Step 5: preparing a second carrier transport layer 15 on the surface of the perovskite absorption layer 14 away from the modification layer 13;

[0075] Step 6: preparing a top electrode 16 on the surface of the second carrier transport layer 15 facing away from the perovskite absorption layer 14;

[0076] The modification layer 13 is a (G1)n-R-(G2)m layer;

[0077] The (G1)n-R-(G2)m layer is formed from the afore...

Embodiment 1

[0112] The preparation method of the solar cell of the present embodiment comprises the following steps:

[0113] Preparation of Bottom Electrode 11

[0114] On the glass substrate, an FTO (fluorine-doped tin oxide) transparent conductive layer is deposited by APCVD (atmospheric pressure chemical vapor deposition) method, thereby forming the bottom electrode 11; the thickness of the transparent conductive layer is 400nm; the square resistance is 10Ω / sq; Then cut into 2cm × 2cm size, wash clean.

[0115] Preparation of the first carrier transport layer 12

[0116] On the surface of the transparent conductive layer away from the glass substrate, a nickel oxide layer, that is, the first carrier transport layer 12, is prepared by PVD sputtering. The specific process parameters are 99.99% Ni target material, and the deposition pressure is -4 Pa, power 50-1000W, O 2 The partial pressure is about 3%-20%. The first carrier transport layer 12 is a hole transport layer with a thicknes...

Embodiment 2

[0127] The difference between Example 2 and Example 1 lies in the modification layer 13. The modification layer 13 in Example 2 is modified by anthracene-2,6-dicarboxylic acid (abbreviated as ADCA, purity: 95%, purchased from McLean) Layer 13 with a thickness of 5 nm.

[0128] The performance of the solar cell is shown in Table 1.

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Abstract

The invention discloses an application of a compound in a solar cell, the structural formula of the compound is (G1) n-R-(G2) m, G1 is selected from at least one of a Si-containing group, a phosphate group, a phosphate group, a carboxyl group, a carboxylic ester group, a sulfonic group or an aldehyde group; r is selected from at least one of aromatic rings or aromatic heterocyclic rings; g2 is selected from at least one of halogen, an N-containing group, an S-containing group, an O-containing group or a P-containing group; n > = 1, m > = 1. The invention also provides a solar cell and a preparation method thereof. The invention also provides a laminated solar cell. According to the invention, the compound is applied to the solar cell, the defects of the lower interface of the perovskite absorption layer can be passivated, the interface recombination is reduced, the surface work function of the first carrier transmission layer can be adjusted, the energy level of the first carrier transmission layer is enabled to be better matched with the energy level of the perovskite absorption layer, and the transmission and collection of carriers at the interface are improved.

Description

technical field [0001] The present application relates to the technical field of solar cells, in particular to the application of a compound in solar cells. Background technique [0002] Organic-inorganic hybrid perovskite solar cells have attracted extensive attention as a new type of high-efficiency and low-cost solar cells. In just a few years, the photoelectric conversion efficiency of small-area perovskite cells has risen rapidly from 3.8% in 2009 to more than 25%. In addition, perovskite solar cells can be efficiently and mass-produced by solution processing methods such as slit coating, spray coating, doctor blade coating, and roll-to-roll. Compared with traditional silicon-based solar energy, it has the advantages of low manufacturing cost, simple processing technology and flexible device preparation, and has good commercial prospects. [0003] Common perovskite solar cell devices are p-i-n type (transparent electrode / hole transport layer / perovskite active layer / el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46
CPCY02E10/549
Inventor 董鑫何博王永磊秦媛
Owner LONGI SOLAR TECH (XIAN) CO LTD
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