Organic photovoltaic cell and preparation method thereof

An organic photovoltaic cell and organic photovoltaic technology, applied in photovoltaic power generation, circuits, electrical components, etc., can solve problems such as failure of battery components, high transmittance, and increased thickness of organic photovoltaic cells, achieving water vapor isolation, high etching efficiency, The effect of preventing short circuit

Pending Publication Date: 2021-12-10
TRULY SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, most of the existing conventional packaging materials are polyolefin (POE) or ethylene vinyl acetate copolymer (EVA), but the transmission rate of the packaging material to water vapor and oxygen is relatively high, and it will penetrate more water vapor and oxygen, etc. Substances that seriously affect the power generation performance of organic photovoltaic cells, and even cause battery components to fail
There is also the use of glass for sealing, but this will further increase the thickness of the organic photovoltaic cell

Method used

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  • Organic photovoltaic cell and preparation method thereof
  • Organic photovoltaic cell and preparation method thereof
  • Organic photovoltaic cell and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0052] like figure 1 As shown, this embodiment provides an organic photovoltaic cell, which includes a transparent substrate 1 and at least one organic battery unit 2 formed on the transparent substrate 1. In this embodiment, the at least one organic battery unit 2 It is a single organic battery unit 2 . Each of the organic battery cells 2 includes a transparent front electrode 21, an organic photovoltaic layer 22 and a back electrode 23 stacked in sequence, wherein the organic photovoltaic layer 22 at least includes HTL, ATL and ETL stacked in sequence, and HTL is hole transport. layer, ATL is the active layer, the donor-acceptor mixed solution is obtained by mixing the donor and acceptor materials in a certain proportion, and ETL is the electron transport layer; each of the organic battery cells 2 also includes an encapsulation layer 24 to protect the organic The photovoltaic layer 22 prevents it from being corroded by water vapor. In this embodiment, the encapsulation lay...

Embodiment 2

[0059] like Figure 1-3 As shown, this embodiment is based on Embodiment 1, and is different from Embodiment 1 in that the at least one organic battery unit 2 includes more than two organic battery units 2, that is, the organic photovoltaic cell of this embodiment is It is composed of multiple organic battery cells 2 connected. Further, the adjacent organic battery cells 2 are connected in series through the auxiliary metal layer 242. It can be understood that the auxiliary metal layer 242 covers the insulating layer 241 and is in the same organic battery cell. In 2, the auxiliary metal layer 242 connected to the partially transparent front electrode 211 and the auxiliary metal layer 242 connected to the partial back electrode 231 are arranged separately, that is, the two are insulated; adjacent organic layers are connected through the same auxiliary metal layer 242. Partially transparent front electrode 211 and partial back electrode 231 on battery cell 2 to form a battery c...

Embodiment 3

[0063] like Figure 4 , 5 As shown, this embodiment provides a method for preparing an organic photovoltaic cell, which includes the following steps:

[0064] S11, forming a transparent electrode layer on the transparent substrate 1 and patterning it to obtain a transparent front electrode 21, such as Figure 4 a, shown in 5a.

[0065] The material of the transparent front electrode 21 may be ITO, FTO and AZO, or a transparent high-conductivity material such as conductive polymer or graphene. The transparent electrode layer can be formed by equipment such as PVD vacuum sputtering; then the transparent electrode layer is patterned through a yellow photolithography process to obtain a pattern of the transparent front electrode 21 .

[0066] S12, forming a transition layer on the transparent substrate 1, the top of which is at least higher than the top of the back electrode 23;

[0067] S13, patterning the transition layer to form a plurality of isolation frames 25, each isol...

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Abstract

The invention discloses an organic photovoltaic cell and a preparation method thereof. The preparation method comprises the steps of S11, forming a transparent front electrode on a transparent substrate; S12, forming a transition layer on the transparent substrate, wherein the top of the transition layer is at least higher than the top of a back electrode; S13, patterning the transition layer to form at least one isolation frame, wherein each isolation frame defines a photovoltaic region, and each frame edge of the isolation frame is set to be wide at the upper part and narrow at the lower part in the height direction; S14, sequentially forming an organic photovoltaic layer and a back electrode on the whole surface of the transparent substrate; S15, etching away the isolation frame; and S16, forming an insulating layer on the transparent substrate and patterning to expose the local transparent front electrode and the local back electrode. According to the preparation method disclosed by the invention, mass production of the organic photovoltaic cell is realized, laser etching is not needed, only chemical etching is adopted, the obtained internode gap is less than 5 microns and is far smaller than the internode gap of laser etching, the etching efficiency is high, and the influence on the organic photovoltaic layer is very small.

Description

technical field [0001] The invention relates to the technical field of organic photovoltaic cells, in particular to an organic photovoltaic cell and a preparation method thereof. Background technique [0002] In recent years, a new type of thin-film solar cells has received extensive attention, namely organic solar cells. Compared with traditional solar cells, the main advantages of organic solar cells are simple process, low production cost and high conversion rate. At present, the organic solar cells that can generally be mass-produced are mainly single-cell organic solar cells, and in the process of mass production of multi-cell organic solar cells, due to the use of scraping and other methods for the organic photovoltaic layer, exposure and other methods cannot be used. It is difficult to perform patterning processing, but when mass-producing multi-section organic solar cells, it is necessary to determine the area size and strictly control the electrode position and the...

Claims

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Application Information

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IPC IPC(8): H01L51/48H01L51/44
CPCH10K71/00H10K30/81H10K30/88Y02E10/549
Inventor 眭斌
Owner TRULY SEMICON
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