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Perovskite solar cell based on suede light management structure and preparation method of solar cell

A solar cell and perovskite technology, applied in photovoltaic power generation, circuits, electrical components, etc., can solve the problems of reducing battery efficiency and optical absorption of the battery, achieve simple structure, eliminate substrate parasitic absorption loss, and reduce environmental impact Effect

Inactive Publication Date: 2016-12-21
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in traditional perovskite solar cells, since light has no scattering effect when propagating in the cell, and there is a reflection loss of about 10% on the glass surface, when the thickness of the absorbing layer is greatly reduced, the optical absorption of the cell will also decrease. drops sharply, thereby significantly reducing cell efficiency

Method used

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  • Perovskite solar cell based on suede light management structure and preparation method of solar cell

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] see figure 1 As shown, a perovskite solar cell based on textured light management structure, including:

[0034] Substrate 1; textured metal back reflection layer 2; electron transport layer 3; perovskite absorption layer 4; hole transport layer 5; transparent conductive front electrode 6, incident sunlight 7 is incident from the direction of the transparent conductive front electrode 6;

[0035] In this embodiment 1, the substrate 1 adopts a stainless steel substrate, the textured metal back reflection layer 2 adopts Ag, the electron transport layer 3 adopts AZO, and the perovskite absorbing layer 4 adopts CH 3 NH 3 PB 3 , the hole transport layer 5 uses Spiro-OMeTAD, and the transparent conductive front electrode 6 uses ITO.

[0036] Its preparation process comprises the following steps:

[0037] Substrate cleaning: first place the stainless steel substrate in a cleaning tank containing electronic cleaning solution for ultrasonic cleaning, the water temperature is...

Embodiment 2

[0044] The difference between this embodiment and embodiment 1 is:

[0045] In step (1), the surface of the stainless steel substrate has a suede topography, and the lateral characteristic size is 1-2 μm, and the suede topography of the base will be transmitted to the subsequent film layer; when depositing the Ag film in the step (2), the temperature is At room temperature, the formed Ag film will not crystallize to form a rough surface, so the feature size of the textured surface is consistent with that of the substrate.

Embodiment 3

[0047] The difference between this embodiment and embodiment 2 is:

[0048] When depositing the Ag film in step (2), use heated sputtering at a temperature of 100-400°C, and the Ag film itself will form a textured surface with a characteristic size of 50-1000nm; in addition, the large-scale textured surface of the substrate It will be conducted to the Ag film, and finally the Ag film will form a suede morphology with a wide distribution of characteristic sizes (50-2000nm).

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Abstract

The invention relates to a perovskite solar cell based on a suede light management structure and a preparation method of the solar cell. The cell comprises a substrate, a suede metal back reflection layer formed on the substrate, an electron transmission layer formed on the suede metal back reflection layer, a perovskite absorption layer formed on the electron transmission layer, a cavity transmission layer formed on the perovskite absorption layer and a transparent conductive front electrode, capable of reflection reducing, formed on the cavity transmission layer. Sunlight is input in the direction of the transparent conductive front electrode, penetrates the transparent conductive front electrode, reaches the suede of the suede metal back reflection layer at the bottom of the cell, and is reflected into the cell in certain angle, the absorption light path of light in the perovskite absorption layer is prolonged, and light management is realized. The cell is simple in structure, and optical absorption of the cell can be improved substantially.

Description

technical field [0001] The invention belongs to the technical field of titanium ore solar cells, and in particular relates to a perovskite solar cell based on a textured light management structure and a preparation method thereof. Background technique [0002] With the increasingly severe problems of the global ecological environment and energy shortage, clean and renewable solar photovoltaic power generation has received widespread attention from all countries. In recent years, a new type of battery technology called "perovskite solar cells" has attracted widespread attention from researchers. After just a few years of development, its device efficiency has increased from 3.8% to 22%, and it has been continuously refreshed on a monthly basis. The reason why perovskite solar cells are highly concerned by the photovoltaic field all over the world is that, in addition to reaching the high efficiency level of the first generation of crystalline silicon cells in a short period ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K71/00H10K30/81H10K30/88H10K30/00H10K2102/00Y02E10/549
Inventor 陈培专牛萍娟于莉媛张炜杜阳阳张建军
Owner TIANJIN POLYTECHNIC UNIV
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