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Perovskite solar cell provided with composite electron transport layer structure

An electron transport layer and solar cell technology, applied in the field of solar cells, can solve problems such as unfavorable production, and achieve the effects of saving costs, suppressing electron recombination, and improving cell efficiency

Inactive Publication Date: 2017-02-08
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is highly toxic during organic synthesis and use, which is not conducive to production

Method used

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  • Perovskite solar cell provided with composite electron transport layer structure

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Effect test

Embodiment 1

[0021] The conductive glass layer, the composite electron transport layer, the perovskite polycrystalline film, the hole transport material layer and the evaporated silver electrode layer are arranged in sequence. The structure effectively conducts electrons, the conductive glass layer is used as the substrate of the perovskite solar cell, and the energy levels of the perovskite polycrystalline film, the hole transport material layer and the evaporated silver electrode layer are matched, which can effectively conduct photoelectrons.

[0022] Preferably, the perovskite polycrystalline film is made of methylamine lead iodine polycrystalline film. The synthesis and preparation of methylamine lead iodine polycrystalline film in perovskite polycrystalline film is relatively mature and simple. At the same time, the stability in air is relatively high, and the cost is low, which is conducive to mass production.

[0023] Preferably, spiro-OMeTAD is selected as the hole transport mater...

Embodiment 2

[0032] The conductive glass layer, the composite electron transport layer, the perovskite polycrystalline film, the hole transport material layer and the evaporated silver electrode layer are arranged in sequence. The structure effectively conducts electrons, the conductive glass layer is used as the substrate of the perovskite solar cell, and the energy levels of the perovskite polycrystalline film, the hole transport material layer and the evaporated silver electrode layer are matched, which can effectively conduct photoelectrons.

[0033] Preferably, the perovskite polycrystalline film is made of methylamine lead iodine polycrystalline film. The synthesis and preparation of methylamine lead iodine polycrystalline film in perovskite polycrystalline film is relatively mature and simple. At the same time, the stability in air is relatively high, and the cost is low, which is conducive to mass production.

[0034] Preferably, spiro-OMeTAD is selected as the hole transport mater...

Embodiment 3

[0043] The conductive glass layer, the composite electron transport layer, the perovskite polycrystalline film, the hole transport material layer and the evaporated silver electrode layer are arranged in sequence. The structure effectively conducts electrons, the conductive glass layer is used as the substrate of the perovskite solar cell, and the energy levels of the perovskite polycrystalline film, the hole transport material layer and the evaporated silver electrode layer are matched, which can effectively conduct photoelectrons.

[0044] Preferably, the perovskite polycrystalline film is made of methylamine lead iodine polycrystalline film. The synthesis and preparation of methylamine lead iodine polycrystalline film in perovskite polycrystalline film is relatively mature and simple. At the same time, the stability in air is relatively high, and the cost is low, which is conducive to mass production.

[0045] Preferably, spiro-OMeTAD is selected as the hole transport mater...

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Abstract

The invention relates to a perovskite solar cell provided with a composite electron transport layer structure. The perovskite solar cell comprises a composite electron transport layer. The perovskite solar cell is characterized in that the composite electron transport layer is made of SnO2. According to the perovskite solar cell of the invention, a SnO2 and TiO2 composite material formed by treating the SnO2 with a TiCl4 aqueous solution is adopted, so that the conduction band energy level of the pure SnO2 is improved, the electron recombination of the solar cell adopting the SnO2 as the electron transport layer structure can be suppressed, and therefore, the efficiency of the cell can be remarkably improved; and the SnO2 and TiO2 composite electron transport material is prepared under low temperature which is below 180 DEG C, and therefore, energy consumption of cell protection can be decreased, and cost can be reduced.

Description

technical field [0001] The invention relates to a solar cell, in particular to a perovskite solar cell with a composite electron transport layer structure. Background technique [0002] Perovskite solar cells have received great attention from scientific research and industry due to their low cost, good performance, and simple preparation. Perovskite materials have been used in solar cells since 2009, and the efficiency has reached nearly 20%, which is 5 times the initial cell efficiency, leaving behind new thin-film solar cells such as dye-sensitized solar cells and organic solar cells. , Perovskite solar cells are low-cost thin-film solar cells that have developed very rapidly in the past three years. [0003] The core of the perovskite solar cell structure is the perovskite crystal form ( ABX 3 ) of organometallic halide light-absorbing materials. In this perovskite ABX 3 In the structure, A is a methylamino group (CH 3 NH 3 ), B is a metal lead atom, and X is a h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46
CPCH10K30/353H10K2102/00Y02E10/549
Inventor 诸跃进黄孝坤张京王鹏王利明徐洁
Owner NINGBO UNIV
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