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Mesoscopic solar cell based on perovskite-kind light absorption material and preparation method thereof

A solar cell, perovskite technology, applied in the field of solar cells

Inactive Publication Date: 2016-03-16
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the battery device with this structure has greatly improved its battery performance and conversion efficiency, there is still a large gap with the theoretical efficiency of perovskite mesoscopic solar cells, and there is still room for improvement in battery performance and efficiency.

Method used

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  • Mesoscopic solar cell based on perovskite-kind light absorption material and preparation method thereof
  • Mesoscopic solar cell based on perovskite-kind light absorption material and preparation method thereof
  • Mesoscopic solar cell based on perovskite-kind light absorption material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0074] The device in this embodiment uses glass as the substrate 1, on which a transparent conductive glass 2 is arranged, and then after depositing a certain thickness such as a 50nm titanium dioxide hole blocking layer 3 thereon, it is sequentially screen-printed from bottom to top. Electron transport layer 4 (such as titanium dioxide), electron blocking layer 6 (preferably tungsten oxide) and back electrode layer 7 (preferably carbon material) are prepared.

[0075] In the electron transport layer 4 , the grain size of nano titanium dioxide is, for example, 18 nm, and the thickness of the titanium dioxide layer is, for example, about 1 μm. In the electron blocking layer 6 , the particle size of tungsten oxide is, for example, 30 nanometers, and the thickness is, for example, about 1 μm. The back electrode layer 7 is preferably a mesoporous conductive film made of graphite or carbon black, with a thickness of about 10 μm, for example. A certain amount, such as 40 μL perovsk...

Embodiment 2

[0077] The device in this embodiment uses glass as the substrate 1, on which a transparent conductive glass 2 is arranged, and then after depositing a certain thickness such as a 50nm titanium dioxide hole blocking layer 3 thereon, it is sequentially screen-printed from bottom to top. Electron transport layer 4 (such as titanium dioxide), insulating spacer layer 5 (such as zirconium dioxide), electron blocking layer 6 (preferably tungsten oxide) and back electrode layer 7 (preferably aluminum material) are prepared.

[0078] In this embodiment, the grain size of nano titanium dioxide is, for example, 18 nm, and the thickness of the titanium dioxide electron transport layer 4 is, for example, about 1 μm. The grain size of zirconia is, for example, 40 nm, and the thickness of the insulating spacer layer is, for example, about 1 μm. The particle size of tungsten oxide in the electron blocking layer 6 is, for example, 30 nanometers, and the thickness is, for example, 100 nanometer...

Embodiment 3

[0082] The device in this embodiment uses glass as the substrate 1, on which a transparent conductive glass 2 is arranged, and a 30nm titanium dioxide dense layer 3, a titanium dioxide electron transport layer 4, and a tungsten oxide electron blocking layer are sequentially prepared by 3D printing from bottom to top 6. A certain amount, such as 100 μL perovskite (PEA) 2 (CH 3 NH 3 ) 40 Pb 41 Cl 10 I 114 (PEA stands for phenylethylamine, the same below) The precursor solution (40wt%) is spin-coated on the above-mentioned semiconductor layer, and left to stand for one minute until it fully penetrates into the titanium dioxide nanocrystalline film, and then dried at a certain temperature such as 50°C. A carbon back electrode layer 7 is printed. The test shows that the obtained battery device is at 100mW / cm 2 The efficiency under simulated sunlight is 20.5%.

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Abstract

The invention discloses a mesoscopic solar cell based on a perovskite-kind light absorption material. The mesoscopic solar cell comprises a glass substrate, a transparent conductive layer, a hole blocking layer, an electron transport layer and a back electrode; and the hole blocking layer is a compact layer, the electron transport layer is a porous thin film, a porous electron blocking layer is further disposed between the electron transport layer and the back electrode, and the electron transport layer and the electron blocking layer are filled with the perovskite-kind light absorption material. Or the mesoscopic solar cell comprises a glass substrate, a transparent conductive layer, a hole transport layer and a back electrode; and the hole transport layer is a porous thin film, a compact electron blocking layer is further disposed between the hole transport layer and the transparent conductive layer, and the hole transport layer is filled with the perovskite-kind light absorption material. The invention further discloses a preparation method of the mesoscopic solar cell. The cell has optimized structure, the filled perovskite material in mesoporous is more, morphology is good, charge transmission performance is improved, cell photoelectric conversion efficiency is greatly improved, and long-term illumination stability of the cell is substantially improved.

Description

technical field [0001] The invention relates to a mesoscopic solar cell device and a manufacturing method thereof, belonging to the technical field of solar cells. Background technique [0002] Mesoscopic solar cells are solar cells that use mesoporous nanocrystalline materials as photoanodes. In this solar cell, the light-absorbing material is adsorbed on the mesoporous nanocrystalline electrode as a photoanode. On the one hand, the generated photoelectrons are injected into the mesoporous nanocrystalline electrode and transported to the conductive substrate, and on the other hand, the generated holes are passed through The hole transport layer transports into the hole collection layer to form a photocurrent. Since the mesoporous nanoelectrode has a very large specific surface area, it can absorb enough light-absorbing materials to obtain a large photocurrent, which has a very high theoretical efficiency. [0003] For a long time, semiconductor nanocrystalline light-absor...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/48
CPCH10K30/151Y02E10/549Y02P70/50
Inventor 韩宏伟刘通发梅安意
Owner HUAZHONG UNIV OF SCI & TECH
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