Perovskite solar cell with double surfactant modification layers

A surfactant and solar cell technology, applied in the field of solar cells, can solve problems affecting battery stability, loss, and carrier transport, and achieve the effects of improving photoelectric conversion efficiency, reducing recombination centers, and having no hysteresis effect

Pending Publication Date: 2020-12-25
北京宏泰创新科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Perovskite solar cells have many defects at the interface between the perovskite layer, the electron transport layer and the hole transport layer. On the one hand, these defects form the recombination center of the carrier, which affects the transport of the carrier and causes the hysteresis effect. and V OC loss; on the other hand, the existence of defect states affects the stability of the battery

Method used

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  • Perovskite solar cell with double surfactant modification layers
  • Perovskite solar cell with double surfactant modification layers
  • Perovskite solar cell with double surfactant modification layers

Examples

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Embodiment 1

[0051] The present embodiment adopts the following method to prepare the perovskite battery with surfactant modification layer of the present invention:

[0052] A transparent conductive film 2: ITO is prepared on a glass substrate 1, and the deposition method is magnetron sputtering. The film thickness is 50nm.

[0053] The electron transport layer 3 is prepared on the ITO transparent conductive layer. Take 15% SnO 2 Hydrocolloid dispersion, add three times the volume of deionized water to get SnO 2 solution, and then the SnO 2 The solution was spin-coated on ITO glass, and then annealed at 180° C. for 20 minutes to obtain an electron transport layer with a film thickness of 50 nm.

[0054] The first modification 4 was prepared on the prepared electron transport layer. Prepare an aqueous solution of trialkyl polyoxyethylene triquaternary ammonium salt (TPQAC) with a concentration of 3mg / ml, then spin-coat the TPQAC solution on the electron transport layer, and anneal at ...

Embodiment 2

[0060] A transparent conductive film 2: ITO is prepared on a glass substrate 1, and the deposition method is magnetron sputtering. The film thickness is 80nm.

[0061] The electron transport layer 3 is prepared on the ITO transparent conductive layer. Take 15% SnO 2 Hydrocolloid dispersion, add three times the volume of deionized water to get SnO 2 solution, and then the SnO 2 The solution was spin-coated on ITO glass, and then annealed at 180° C. for 20 minutes to obtain an electron transport layer with a film thickness of 50 nm.

[0062] The first modification layer 4 is prepared on the prepared electron transport layer. Prepare an aqueous solution of dialkyl polyoxyethylene triquaternary ammonium salt (DPQAC) with a concentration of 2mg / ml, then spin coat the DPQAC solution on the electron transport layer, and anneal at 120°C for 20min to obtain a passivation layer and a film layer The thickness is 20nm.

[0063] The perovskite absorption layer 5 is prepared by a two-...

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Abstract

The invention discloses a perovskite solar cell with double surfactant modification layers, which comprises a perovskite absorption layer, an electron transport layer and a hole transport layer, and is characterized in that a first modification layer is arranged at an interface between the electron transport layer and the perovskite layer; and a second modification layer is arranged at the interface between the hole transport layer and the perovskite layer, and the first modification layer and the second modification layer are both quaternary ammonium salt surfactants.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a perovskite solar cell with double-modified layers of surfactants. Background technique [0002] Perovskite solar cells have become the most promising solar cells due to their high photoelectric conversion efficiency, low cost, and simple fabrication. At present, the point cell efficiency of perovskite solar cells has reached 24.2%, but there is still a large gap between the actual efficiency of perovskite solar photovoltaic devices and the theoretical efficiency. There are many ways to improve the conversion efficiency of perovskite solar cells. One is to adjust the material composition of each layer of perovskite solar cells, and develop materials with better performance to replace the existing hole transport layer, perovskite absorption layer or electronic The second is to optimize the interface between the layers of the perovskite battery to reduce the recombination of ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K85/631H10K85/30H10K30/10Y02E10/549
Inventor张洪旭王永磊唐泽国
Owner北京宏泰创新科技有限公司