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Application of 2-methoxynaphthalene as active layer additive and polymer battery of 2-methoxynaphthalene

A technology of methoxynaphthalene and active layer, which is applied in the field of solar cells, can solve the problems of great harm to the human body and the environment, affecting the shape stability of the active layer, and not easy to remove, so as to improve device performance and stability, and good photoelectricity Effects of transformation efficiency and light stability

Pending Publication Date: 2022-06-24
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this high-boiling point liquid additive is not easy to remove in the active layer film, and the residual additive will seriously affect the stability of the active layer morphology, which is not conducive to the long-term stability of the polymer battery.
In addition, traditional liquid additives are generally halogen solvents, such as 1,8-diiodooctane (DIO), 1-chloronaphthalene (CN), etc., which are highly toxic and harmful to the human body and the environment. Large-scale industrial application

Method used

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  • Application of 2-methoxynaphthalene as active layer additive and polymer battery of 2-methoxynaphthalene
  • Application of 2-methoxynaphthalene as active layer additive and polymer battery of 2-methoxynaphthalene
  • Application of 2-methoxynaphthalene as active layer additive and polymer battery of 2-methoxynaphthalene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] 2-MN is used as the additive of the photosensitive active layer, and chloroform is used as the solvent of the active layer to prepare a polymer solar cell device, and the specific method is as follows:

[0078] The prepared device adopts the forward device structure ITO / PEDOT:PSS / active layer / PNDIT-F3N / Ag. From bottom to top are battery positive electrode (indium tin oxide), hole transport layer (PEDOT:PSS), photosensitive active layer, electron transport layer (PNDIT-F3N), and battery negative electrode (metal silver).

[0079] The polymer donor material of the photosensitive active layer is PM6, and the acceptor material is PY-DT. The molecular structures of the two are as follows: figure 1 shown. Weigh PM6, PY-DT and 2-MN according to the mass ratio of 1:1:3, and put them into a bottle for mixing. With the concentration of PM6 as 6.5mg / ml, add the solvent chloroform, stir at room temperature for 4 hours, and complete dissolve. Afterwards, a film was formed by spin...

Embodiment 2

[0082] No additives were added during the preparation of the photosensitive active layer film, and the rest of the preparation process was the same as in Example 1.

[0083] The open circuit voltage of the obtained polymer battery is 0.955V, and the short circuit current density is 23.17mA / cm 2 , the fill factor is 65.4%, and the photoelectric conversion efficiency is 14.47%.

[0084] The performance parameters of the devices obtained in Example 1 and Example 2 are compared and summarized in Table 1. The J-V curves of both are as figure 2 shown. Light stability tracking test of the device (such as image 3 shown) showed that the polymer battery with 2-MN as additive exhibited better light stability.

[0085] From the above comparison, 2-MN can be used as an additive to simultaneously improve the device performance and stability of polymer batteries.

[0086] Table 1 does not use additives, and polymer battery device parameters using additive 2-MN

[0087]

Embodiment 3

[0089] 2-MN is applied to polymer batteries prepared by non-halogen solvents, and o-xylene is used as the preparation solvent. The specific application methods and testing methods are as follows:

[0090] The device structure, photosensitive active layer material and testing method are the same as in Example 1. Active layer preparation conditions: weigh PM6, PY-DT and 2-MN respectively according to the mass ratio of 1:1:3, and put them into a bottle for mixing. With the concentration of PM6 as 9mg / ml, add the solvent o-xylene and heat to 80°C and stirred for 4 hours to complete dissolution. Then, the hot solution at 80° C. was spin-coated into a film by a spin-coater at a spin-coating speed of 1700 rpm to obtain a photosensitive active layer with a film thickness of 100 nm. Finally, it was annealed under a hot stage at 80° C. for 8 minutes to complete the preparation of the photosensitive active layer film.

[0091] The performance parameters of the polymer battery device pr...

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Abstract

According to the application method of the 2-methoxynaphthalene serving as the active layer additive in the polymer battery, the polymer battery with the 2-methoxynaphthalene (2-MN) serving as the additive can obtain 17.32% of photoelectric conversion efficiency, and the photoelectric conversion efficiency is obviously higher than 14.47% of a traditional polymer battery. In addition, 2-MN can also be applied to a polymer battery prepared from a non-halogen solvent, and excellent photoelectric conversion efficiency can also be achieved. In addition, the stability of the polymer battery taking the 2-MN as the additive is also obviously improved.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to an application of 2-methoxynaphthalene (2-MN) as an active layer additive and a polymer battery thereof. Background technique [0002] Energy is the key to the survival of human beings and the promotion of social development. With the continuous advancement of science and technology, the demand for energy in human society is increasing. At present, fossil energy (such as: coal, oil, natural gas, etc.) still occupies a dominant position in the energy structure of human society. However, due to people's excessive development and utilization, fossil energy is about to be exhausted, and severe environmental pollution problems will be caused in the process of utilization. In order to solve the existing problems of traditional fossil energy, the development of green and renewable new energy is the main content of energy development at this stage. Among them, solar energy, as an inexhaustib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46
CPCH10K85/615H10K30/00H10K30/30Y02E10/549
Inventor 孙艳明宋佳利
Owner BEIHANG UNIV
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