Perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of insufficient light absorption in the active layer, easy reaction, battery temperature rise, etc., and achieve the effect of increasing light absorption efficiency, improving efficiency, and increasing numerical value

Pending Publication Date: 2020-06-05
紫石能源有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] Aiming at the shortcomings of insufficient light absorption and low efficiency in the active layer of perovskite batteries, and the interface modification of noble metal nanoparticles causes the internal temperature of the battery to rise and is prone to reactions; the present invention proposes a silicon nanoparticle interface modification layer. Perovskite solar cells, which can improve the light harvesting ability and cell conversion efficiency of the perovskite active layer without increasing the thickness of the perovskite active layer, and at the same time avoid the damage caused by the interface modification of noble metal nanoparticles. question

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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Embodiment 1

[0069] according to figure 2 The flow chart of the preparation method is shown to prepare the perovskite solar cell of this embodiment.

[0070] S1: Acetone, deionized water, and isopropanol were used to ultrasonically clean the glass substrate with the transparent conductive electrode ITO in sequence.

[0071] S2: sequentially prepare 80 nm dense layer TiO on the ITO electrode 2 , 300 nm mesoporous TiO 2 , and dried and sintered at 450°C.

[0072] S3: The preparation concentration is 1.5×10 -9 mol / L silicon nanoparticle / toluene suspension, wherein the silicon nanoparticle used is spherical, with an average diameter of 150 nanometers; then the silicon nanoparticle / toluene suspension is spin-coated on the mesoporous layer by spin coating , dried at 70°C for 10 minutes; then spin-coated the silicon nanoparticle / toluene suspension solution again, dried at 70°C for 10 minutes, and repeated this cycle for 3 times, and finally dried at 80°C for 50 minutes. The thickness of the...

Embodiment 2

[0075] according to figure 2 The flow chart of the preparation method is shown to prepare the perovskite solar cell of this embodiment.

[0076] S1: Acetone, deionized water, and isopropanol were used to ultrasonically clean the glass substrate with the transparent conductive electrode ITO in sequence.

[0077] S2: sequentially prepare a 100 nm dense layer of TiO on the ITO electrode 2 , 400 nm mesoporous TiO 2 , and dried and sintered at 450°C.

[0078] S3: The preparation concentration is 1×10 -9 mol / L silicon nanoparticle / toluene suspension, wherein the silicon nanoparticle used is spherical and has an average diameter of 120 nanometers; then the silicon nanoparticle / toluene suspension is spin-coated on the mesoporous layer by spin coating , dried at 80°C for 10 minutes; then spin-coated the silicon nanoparticle / toluene suspension solution again, dried at 80°C for 10 minutes, repeated 5 times in this way, and finally dried at 80°C for 60 minutes, the prepared silicon ...

Embodiment 3

[0081] according to figure 2 The flow chart of the preparation method is shown to prepare the perovskite solar cell of this embodiment.

[0082] S1: Acetone, deionized water, and isopropanol are used to ultrasonically clean the glass substrate with the transparent conductive electrode FTO in sequence.

[0083] S2: Sequentially prepare a 50 nm dense layer of TiO on the FTO electrode 2 , 200 nm mesoporous TiO 2 / ZrO 2 , and dried and sintered at 450°C.

[0084] S3: The preparation concentration is 2×10 -9 mol / L silicon nanoparticle / toluene suspension, wherein the silicon nanoparticle used is spherical, with an average diameter of 80 nanometers; then the silicon nanoparticle / toluene suspension is spin-coated on the mesoporous layer by spin coating , dried at 50°C for 10 minutes; then spin-coated silicon nanoparticles / toluene suspension solution again, dried at 50°C for 10 minutes, and cycled 5 times, and finally dried at 80°C for 30 minutes, the prepared silicon The thickn...

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Abstract

The invention relates to a perovskite solar cell, which comprises a cell body. The cell body is provided with a substrate, a transparent conductive electrode, a compact layer, a mesoporous layer, a perovskite active layer, a hole transport layer and a metal electrode layer from bottom to top, and a silicon nanoparticle interface modification layer is arranged between the mesoporous layer and the perovskite active layer; or the cell body is provided with a substrate, a transparent conductive electrode, a compact layer, a perovskite active layer, a hole transport layer and a metal electrode layer from bottom to top, and a silicon nanoparticle interface modification layer is arranged between the compact layer and the perovskite active layer; the silicon nanoparticles are nanoparticles of elemental silicon. On the premise that the thickness of the perovskite active layer is not increased, the light capturing capability and the photoelectric conversion efficiency of the perovskite active layer are improved. Compared with noble metal nanoparticles, the silicon nanoparticles do not absorb more energy to cause violent temperature rise in the cell, and the stability is better, so that the overall performance of the perovskite solar cell is more excellent.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a perovskite solar cell and a preparation method thereof. Background technique [0002] With the increasingly serious problems of the global ecological environment and energy shortage, clean and renewable energy has attracted worldwide attention, especially solar photovoltaic technology. Among the existing solar technologies, silicon-based solar cell technology is currently the most mature and has the highest market share. However, due to the high energy consumption and high pollution preparation process, it cannot become the most ideal solar technology. The development of low-cost and high-efficiency new solar cells has attracted research interest. [0003] Due to the advantages of high efficiency, low cost and roll-to-roll printing, perovskite solar cells have attracted much attention in the field of photovoltaics. It has great potential in application fields such as phot...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/48
CPCH10K30/10H10K30/00Y02E10/549Y02B10/10
Inventor 许吉林刘琦梁鹏辛智渊王权李静文付红颖
Owner 紫石能源有限公司
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