A perovskite solar cell with specific structure and a preparation method thereof

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of perovskite cell efficiency attenuation, lack of moisture resistance, and reduced efficiency, so as to increase work stability and avoid Aggravation effect, effect of improving efficiency

Inactive Publication Date: 2019-01-15
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the nature of the perovskite material itself is sensitive to water and oxygen, the efficiency of the perovskite battery exposed to the air decays rapidly, and the efficiency drops sharply after being placed in the air for a period of time, which limits the development of the perovskite battery. In order to overcome this problem, a perovskite battery packaging process is urgently needed, which can make the battery work stably and efficiently
The main structure of current battery devices does not have good moisture resistance. In addition, due to the low melting point of perovskite, batteries with ordinary structures are easily affected by the packaging process, which significantly reduces efficiency.

Method used

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  • A perovskite solar cell with specific structure and a preparation method thereof
  • A perovskite solar cell with specific structure and a preparation method thereof
  • A perovskite solar cell with specific structure and a preparation method thereof

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Embodiment 1

[0031] A perovskite solar cell with a specific structure, including: a conductive substrate, a metal electrode layer, an electron transport layer, a perovskite layer, a hole transport layer, a barrier / encapsulation composite layer, and a covering layer. The fabrication process is as follows:

[0032] 1) Using FTO glass as the base material, cut it into a size of 5×5cm, ultrasonically clean it with detergent solution, deionized water, and ethanol for 15 minutes each, and dry it with nitrogen flow;

[0033] 2) Spraying a dense titanium dioxide layer on the treated substrate as an electron transport layer with a thickness of 70nm;

[0034] 3) The perovskite layer was spin-coated by the anti-solvent method in a vacuum glove box, annealed at 100°C for 1 hour, and the thickness of the perovskite layer was 600nm;

[0035] 4) spin-coat the Spiro-OMeTAD hole-conducting layer in a vacuum glove box, and the film thickness is 100nm;

[0036] 5) Prepare a metal electrode layer on the hole...

Embodiment 2

[0043] A perovskite solar cell with a specific structure, including: a conductive substrate, a metal electrode layer, an electron transport layer, a perovskite layer, a hole transport layer, a barrier / encapsulation composite layer, and a covering layer. The fabrication process is as follows:

[0044] 1) Using FTO glass as the base material, cut it into a size of 5×5cm, ultrasonically clean it with detergent solution, deionized water, and ethanol for 15 minutes each, and dry it with nitrogen flow;

[0045] 2) Soak a layer of tin oxide on the treated substrate with a thickness of 70nm;

[0046] 3) The perovskite layer was spin-coated by the anti-solvent method in a vacuum glove box, annealed at 100°C for 1 hour, and the thickness of the perovskite layer was 600nm;

[0047] 4) spin-coat Spiro-OMeTAD in a vacuum glove box with a film thickness of 100nm;

[0048] 5) Prepare a metal electrode layer on the hole conductive layer, use a mask to fix the substrate in a high-resistance v...

Embodiment 3

[0055] Inverted perovskite solar cells, the fabrication process is as follows:

[0056] 1) Using FTO glass as the base material, cut it into a size of 1.5×2cm, ultrasonically clean it with detergent solution, deionized water, and ethanol for 15 minutes each, and dry it with nitrogen flow;

[0057] 2) Spin-coat a layer of PEDOT:PSS film on the treated substrate as a hole transport layer with a film thickness of 100nm;

[0058] 3) Spin-coat the perovskite layer by anti-solvent method in a vacuum glove box, anneal at 100°C for 10 minutes, anneal at 120°C for 50 minutes, and the thickness of the perovskite layer is 650nm;

[0059] 4) After the preparation of the perovskite light-absorbing layer is completed, a layer of PCBM film is spin-coated as the electron transport layer;

[0060] 5) Evaporate 8nmBCP and 80nmCu on the PCBM respectively, BCP is used as a barrier layer to block the transmission of holes, and Cu is used as a back electrode;

[0061] 6) Cut the PET film whose fo...

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Abstract

The invention belongs to the technical field of perovskite solar energy, in particular to a perovskite solar cell with a specific structure and a packaging method thereof. The perovskite solar cell comprises a conductive substrate, Charge Transport Layer 1, perovskite layer, Charge transport layer 2, an electrode layer, a barrier / encapsulation composite layer and a cladding layer, A charge transport layer 1, a perovskite layer 2, a charge transport layer 2 and an electrode layer are sequentially grown on the conductive substrate, and a barrier / encapsulation composite layer is arranged on the electrode layer, and the charge transport layer 1, the perovskite layer 2, the charge transport layer 2 and the electrode layer are covered under the barrier / encapsulation composite layer, and the barrier / encapsulation composite layer is covered with a cover layer. The invention adopts a composite layer composed of a barrier layer and an encapsulation layer to encapsulate the battery, utilizes theorganic composite of the rigid barrier layer and the plastic polymer encapsulation layer and combines the outer covering layer, realizes the stability of the perovskite battery to be greatly improved,and greatly improves the efficiency of the perovskite battery.

Description

technical field [0001] The invention belongs to the technical field of perovskite batteries, and in particular relates to a perovskite solar battery with a specific structure and a preparation method thereof. Background technique [0002] At present, the most widely researched and applied solar cells are mainly silicon-based solar cells, but due to its complex preparation process and high energy consumption, the production cost remains high for a long time, and the production process will pollute the environment, so its application is restricted. a great restriction. In recent years, perovskite solar cells have developed rapidly, and their conversion efficiency has exceeded 20%, and the preparation conditions are simple (can be prepared by solution spin coating, printing, and 3D printing technology), and the operability and regulation are wide, and it is easy to realize large-area preparation, so It is currently the most promising solar cell for industrialization. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/00H10K30/10Y02E10/549
Inventor 钟杰陈赛黄福志程一兵
Owner WUHAN UNIV OF TECH
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