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A kind of perovskite solar cell with conductive electrode and electron transport layer and preparation method

An electron transport layer and solar cell technology, which is applied in the field of perovskite solar cell preparation, can solve the problem of not effectively reducing the defect state density and surface charge trap density, reducing the short-circuit current density of perovskite solar cells, and affecting the photoelectricity of the cell. Conversion efficiency and other issues to achieve the effect of avoiding rapid recombination, reducing the density of interface defect levels, and shortening the production cycle

Active Publication Date: 2020-03-31
西安科优特科技有限公司
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Problems solved by technology

Looking at the current research results, the combination of the transparent conductive electrode and the electron transport layer is a heterojunction stack structure, which means that there is a potential barrier in the contact area of ​​the two films, which affects the carrier transport.
At the same time, due to the lattice mismatch of the two materials, a large number of charge traps are introduced, thereby reducing the short-circuit current density of the perovskite solar cell and affecting the photoelectric conversion efficiency of the cell.
However, the reported preparation methods for transparent conductive electrodes and electron transport layers cannot effectively reduce their defect state density and surface charge trap density.

Method used

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  • A kind of perovskite solar cell with conductive electrode and electron transport layer and preparation method

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preparation example Construction

[0029] A method for preparing a perovskite solar cell with a high-performance transparent conductive electrode and an electron transport layer, comprising the following steps:

[0030] Step 1: Deposit a transparent conductive oxide electrode 2 on the glass substrate 1 by radio frequency magnetron co-sputtering method through double targets. The transparent conductive oxide electrode 2 is made of fluorine-doped tin oxide FTO, indium tin oxide ITO, aluminum-doped zinc oxide Any material in AZO and gallium-doped zinc oxide GZO, the transparent conductive oxide electrode 2 has a lower resistivity, higher electrical conductivity, high transmittance, dense film, and the deposition temperature of the transparent conductive oxide electrode 2 is controlled at 23-150°C, the thickness is controlled at 50-150nm;

[0031] Step 2: After the transparent conductive oxide electrode 2 is prepared, the metal oxide electron transport layer 3 is deposited through one of the target sources by radio...

Embodiment 1

[0035] A method for preparing a perovskite solar cell with a high-performance transparent conductive electrode and an electron transport layer, comprising the steps of:

[0036] 1) Cleaning of the glass substrate 1: cleaning the substrate in an ultrasonic cleaner is divided into the following four steps, ① cleaning with ethanol for 15 minutes; ② cleaning with acetone for 30 minutes; ③ cleaning with isopropanol for 30 minutes; ④ cleaning with ethanol for 15 minutes; The glass substrate with electrodes was blown dry with nitrogen.

[0037] 2) Preparation of transparent conductive oxide electrode 2: based on figure 1 Structure The transparent conductive oxide electrode 2 is prepared on the glass substrate 1 by the radio frequency magnetron co-sputtering method, taking fluorine-doped tin oxide FTO as an example, the target material is tin oxide, and the deposition gas atmosphere is argon, oxygen and trifluorine Nitrogen, the ratio of which is 26:1:3 sccm, the deposition temperatu...

Embodiment 2

[0043] A method for preparing a perovskite solar cell with a high-performance transparent conductive electrode and an electron transport layer, comprising the steps of:

[0044] 1) Cleaning of the glass substrate 1: cleaning the substrate in an ultrasonic cleaner is divided into the following four steps, ① cleaning with ethanol for 15 minutes; ② cleaning with acetone for 30 minutes; ③ cleaning with isopropanol for 30 minutes; ④ cleaning with ethanol for 15 minutes; The glass substrate with electrodes was blown dry with nitrogen.

[0045] 2) Preparation of transparent conductive oxide electrode 2: based on figure 1 Structure The transparent conductive oxide electrode 2 is prepared on the glass substrate 1 by the radio frequency magnetron co-sputtering method. Taking aluminum-doped zinc oxide AZO as an example, the target materials are zinc oxide and aluminum, and the deposition gas atmosphere is argon and oxygen. The ratio is 29.4:0.6 sccm, the deposition temperature is 100° C...

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Abstract

The invention discloses a perovskite solar cell with a high-performance transparent conductive electrode and an electron transport layer and a preparation method thereof. The transport layer, the perovskite light absorption layer, the hole transport layer, the metal electrode, the transparent conductive oxide electrode and the metal oxide electron transport layer are all deposited by radio frequency magnetron co-sputtering. The invention has the advantages of simple process, good uniformity, good repeatability and high efficiency of the perovskite solar cell.

Description

technical field [0001] The invention relates to the field of photovoltaics, in particular to a method for preparing a perovskite solar cell with a high-performance transparent conductive electrode and an electron transport layer. Background technique [0002] With the excessive utilization of fossil energy and the environmental pollution generated in the process of use, what mankind needs to solve is the sustainable development and utilization of new energy, and solar photovoltaic is one of the most promising energy strategies. Improving the photoelectric conversion efficiency of solar cells to reduce the cost of photovoltaic power generation is one of the core research topics in the field of photovoltaics. Among them, the organic-inorganic hybrid halogen perovskite material was first used in solar cells in 2009. In just a few years, its photoelectric conversion efficiency has soared from 3.8% at that time to more than 22% today. The efficiency of perovskite solar cells has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K71/16H10K30/10H10K30/82Y02E10/549
Inventor 王大鹏王康赵文静刘生忠
Owner 西安科优特科技有限公司
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