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Packaging structure of perovskite solar cell, and preparation method of packaging structure

A technology for solar cells and packaging structures, applied in the field of solar cells, can solve problems such as performance degradation, and achieve the effects of improving stability, low cost, and avoiding contact

Pending Publication Date: 2020-09-11
TRINA SOLAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In most of the packaging structures reported so far, the metal electrode is partially in contact with the perovskite, and at a high operating temperature (60-70°C), metal materials such as gold electrodes will penetrate into the perovskite to form Defects cause performance degradation (ACS Nano 2016, 10, 6306-6314), therefore, avoid direct contact between metal electrodes inside the packaging structure and perovskite materials

Method used

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  • Packaging structure of perovskite solar cell, and preparation method of packaging structure
  • Packaging structure of perovskite solar cell, and preparation method of packaging structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 2 As shown, a packaging structure of a perovskite solar cell includes a substrate 1, and the substrate 1 is sequentially provided with a transparent conductive layer 2, an electron transport layer 3, a perovskite layer 4, a hole transport layer 5 and The metal electrode 6 is provided with a dense insulating layer 7 between the perovskite layer 4 and the metal electrode 6 .

[0025] figure 1 Shown is a perovskite solar cell in the prior art. There is no dense insulating layer between the perovskite layer 4 and the metal electrode 6 . diffusion. In the present invention, a dense insulating layer 7 is provided between the perovskite layer 4 and the metal electrode 6, which cuts off the contact between the metal electrode and the perovskite layer 4, and prevents the diffusion of the metal electrode to other layers at high temperature, especially to calcium Diffusion of titanite layer 4, thus improving stability.

[0026] Specifically, the transparent con...

Embodiment 2

[0032] A method for preparing an encapsulation structure of a perovskite solar cell, combining figure 2 As shown, a transparent conductive layer 2, an electron transport layer 3, a perovskite layer 4, a hole transport layer 5, a dense insulating layer 7 and a metal electrode 6 are sequentially deposited on a substrate 1 to complete the preparation of a perovskite solar cell, and then The packaging material layer 8 and the substrate 9 are sequentially stacked on the perovskite solar cell, and the packaging is completed by a laminator. During the packaging process of the laminator, the pressing temperature is 80 to 150 degrees Celsius, and the pressing time is 1 to 60 minutes.

[0033] The substrate 1 is a glass substrate, a polyethylene terephthalate organic substrate or a polyimide organic substrate, and the transparent conductive layer 2 is FTO, ITO, AZO, GZO or Ag nanowires, prepared The method is sputtering method or sol-gel method, the thickness is 100-500nm, and the ele...

Embodiment 3

[0037] First, the glass substrate 1 is cleaned, and then the substrate 1 is covered with a mask to prepare FTO by magnetron sputtering. The background vacuum of sputtering is 5×10 -4 Pa, the sputtering power is 100W, the distance between the target and the substrate is 6cm, the working pressure is 0.8Pa, the sputtering starts after 5min of pre-sputtering, the deposition time is 5min, and the sputtering thickness is 300nm, and the transparent conductive layer 2 is deposited. Remove when ready. The mask plate separates the transparent conductive layer 2 into a first conductive portion 2 a and a second conductive portion 2 b with a gap.

[0038] Then paste the tape on some areas to prepare the mask of the electron transport layer 3, and use the tape to cover the area except the first conductive part 2a. The electron transport layer is prepared by the sol-gel method, and 2% mass fraction of SnO is prepared first. 2 The colloidal precursor solution was stirred evenly, and 60 micro...

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Abstract

The invention belongs to the technical field of solar cells, and particularly relates to a perovskite solar cell packaging structure and a preparation method thereof. The perovskite solar cell packaging structure comprises a substrate, wherein a transparent conductive layer, an electron transport layer, a perovskite layer, a hole transport layer and a metal electrode are sequentially arranged on the substrate, and a compact insulating layer is arranged between the perovskite layer and the metal electrode. According to the invention, the perovskite solar cell can be effectively packaged, so that contact with external water and oxygen is avoided; and the deposited insulating layer can effectively prevent the internal metal electrode from diffusing into the perovskite layer, so that the stability of the device is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and relates to a packaging structure of a perovskite solar cell and a preparation method thereof. Background technique [0002] With the advantages of high efficiency and low cost, perovskite solar cells are considered to have broad prospects for commercialization. In order to realize the mature application of this type of device, the stability problem of the battery must be solved. In most of the packaging structures reported so far, the metal electrode is partially in contact with the perovskite, and at a high operating temperature (60-70°C), metal materials such as gold electrodes will penetrate into the perovskite to form Defects cause performance degradation (ACS Nano 2016, 10, 6306-6314). Therefore, direct contact between metal electrodes inside the packaging structure and perovskite materials should be avoided. Contents of the invention [0003] The object of the present invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/44H01L51/48
CPCH10K30/88Y02E10/549
Inventor 夏锐王尧刘成法邹杨陈达明陈奕峰
Owner TRINA SOLAR CO LTD
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