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Method for manufacturing high-efficiency perovskite type solar cell through large crystal grain forming

A solar cell and perovskite-type technology, applied in circuits, photovoltaic power generation, electrical components, etc., to achieve the effect of improving performance

Inactive Publication Date: 2015-06-24
朱熹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above preparation process does not involve how to improve the light-absorbing efficiency of the light-absorbing layer so as to improve the battery efficiency.

Method used

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  • Method for manufacturing high-efficiency perovskite type solar cell through large crystal grain forming
  • Method for manufacturing high-efficiency perovskite type solar cell through large crystal grain forming
  • Method for manufacturing high-efficiency perovskite type solar cell through large crystal grain forming

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Reference figure 1 , the perovskite-type solar cell includes a conductive substrate, a hole transport layer, a perovskite layer, an electron transport layer and an electrode from top to bottom.

[0039] 2) After cleaning the ITO glass with detergent, ultrasonically clean it with acetone, absolute ethanol, and deionized water in sequence, take it out, and dry it with nitrogen.

[0040] 3) Spin-coat PEDOT:PSS on a conductive substrate by solution spin-coating, and heat the substrate at 180°C.

[0041] 4) CH with a molar ratio of 1:1 3 NH 3 I and PbI 2 was dissolved in DMF solvent to form a yellow mixed solution, and the temperature was maintained at 70° C., then dropped on the substrate, immediately spin-coated at 4500 rpm for 3 seconds, and then naturally cooled to room temperature.

[0042] 5) At the same time as a comparative test, the substrate temperature in step 3) was maintained at 120°C, and then step 4) was performed, and the yellow mixed solution was drop...

Embodiment 2

[0048] 1) Clean the ITO glass with detergent, then ultrasonically clean it with acetone, absolute ethanol, and deionized water in sequence, take it out, and blow it dry with nitrogen.

[0049] 2) Spin-coat TiO on conductive substrates by solution spin-coating 2 Precursor solution, then put it into a muffle furnace and heat it to 150-200°C, then treat it at low temperature for about 30 minutes, and then maintain the substrate at 190°C before proceeding to step 3).

[0050] 3) CH with a molar ratio of 1:1 3 NH 3 Cl and PbI 2 was dissolved in NMP solvent to form a yellow mixed solution, and the temperature was maintained at 70° C., then dropped on the substrate, immediately spin-coated at 4000 rpm for 2 seconds, and then naturally cooled to room temperature.

[0051] 4) Spiro-MeOTAD solution was spin-coated on top of the perovskite layer.

[0052]6) Growth of silver electrodes on top of Spiro-MeOTAD.

[0053] The optical picture of perovskite layer spin-coating in embodiment...

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Abstract

The invention discloses a method for manufacturing a high-efficiency perovskite type solar cell through large crystal grain forming. The method for manufacturing the high-efficiency perovskite type solar cell through large crystal grain forming at least sequentially comprises the steps that hole (or electron) transport layer materials, perovskite type materials, electron (or hole) transport layer materials and electrode materials are grown on a conducting substrate. The performance of the cell can be improved greatly by improving crystal grain forming of the perovskite type materials. During manufacturing, two kinds of precursor materials need to be dissolved in a solvent, so that a yellow mixing solution is obtained, the temperature of the yellow solution needs to be kept between 65 DEG C and 80 DEG C all the time before spin coating, the temperature of the substrate is kept between 170 DEG C and 200 DEG C, spin coating needs to be conducted at the spinning speed of 3500-5000 rpm for about one to three seconds instantly after the yellow solution is dripped on the substrate, then rapid cooling is conducted for about three to five seconds till the temperature reaches 50 DEG C, then natural cooling is conducted till the temperature reaches an indoor temperature, in this way, a yellow film can be changed into a dark brown film, and large crystal grain forming can be observed at the same time.

Description

Technical field [0001] The invention relates to the field of photovoltaic device preparation, and specifically relates to a method of utilizing large crystal grain formation to improve the efficiency of solar cells. Background technique [0002] With the consumption of traditional fuels and the environmental problems caused, clean energy has attracted more and more attention. The development and application of solar cells are of important strategic significance. Traditional silicon cells have been commercialized, but their costs are relatively high. Dye-sensitized batteries require electrolytes to transport carriers and have many limitations in preparation. Although the battery structure of organic small molecule or polymer batteries is simple, the stability needs to be further improved. [0003] Perovskite solar cells are a new type of battery that have developed rapidly internationally in recent years. Perovskite materials have the characteristics of high carrier mobil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/48H01L31/18H01L31/036
CPCY02E10/549Y02P70/50
Inventor 朱熹汪敏
Owner 朱熹
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