Perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve problems such as affecting device efficiency, corroding metal cells, reducing device efficiency, etc., and achieving the effect of improving device stability and strong bonding force

Active Publication Date: 2021-12-10
EAST CHINA NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the one hand, the surface of the perovskite film is easily damaged by the external environment such as water vapor and oxygen, which affects the device efficiency; The transport layer and the metal electrode layer will destroy the transport layer of the battery and even corrode the metal battery, further reducing the device efficiency

Method used

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  • Perovskite solar cell and preparation method thereof
  • Perovskite solar cell and preparation method thereof
  • Perovskite solar cell and preparation method thereof

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Experimental program
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Embodiment

[0045] refer to figure 1 , The perovskite solar cell of this embodiment comprises a substrate 1, a hole transport layer 2, a perovskite film 3, a sulfide layer 4, an electron transport layer 5 and an electrode 6 which are sequentially stacked, and the preparation process is as follows:

[0046] Using ITO conductive glass as the substrate 1, first wash with ITO cleaning agent and deionized water to remove grease and organic matter, then ultrasonically wash with deionized water, acetone, and isopropanol in sequence, blow dry with nitrogen, and then clean with ozone plasma further processing.

[0047] The hole transport layer 2 was fabricated on the treated ITO conductive glass by spin coating. The hole transport layer 2 is a P3CT-N material layer, which is formed by spin-coating a methanol solution of P3CT-N with a concentration of 1 mg / mL. The speed of the homogenizer is 4000 rpm, the time is 45 seconds, and the thickness is 10 nm.

[0048] Fabricate a perovskite film 3 on th...

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Abstract

The invention discloses a perovskite solar cell and a preparation method thereof. A sulfide layer is arranged on a perovskite thin film layer of the perovskite solar cell, and the sulfide layer is prepared by making one of lead picolinate, lead acetate and lead formate react with hexamethyldisilazane. When the sulfide layer is applied to the perovskite solar cell, the surface of the perovskite can be effectively stabilized, the damage of the external environment to the perovskite can be inhibited, the diffusion of perovskite layer ions to a metal electrode can be blocked, and the stability of the perovskite solar cell can be improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to the film stability of perovskite solar cells and a preparation method thereof. Background technique [0002] The conversion efficiency of perovskite solar cells has reached 25%, and the stability of the device has become the biggest bottleneck restricting its commercialization. The stability of perovskite batteries is closely related to the surface and interface properties of perovskite thin films. On the one hand, the surface of the perovskite film is easily damaged by the external environment such as water vapor and oxygen, which affects the device efficiency; The transport layer and the metal electrode layer will destroy the transport layer of the battery and even corrode the metal battery, further reducing the device efficiency. Therefore, to improve device stability, it is necessary to strengthen the surface and interface properties of perovskites to avoid them being a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/44H01L51/42H01L51/48
CPCH10K71/12H10K71/40H10K30/15H10K30/88Y02E10/549
Inventor 李晓冬方俊锋
Owner EAST CHINA NORMAL UNIV
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