Perovskite solar cell with high-quality electron transport layer and preparation method thereof

A technology of electron transport layer and solar cell, which is applied in the direction of circuits, electrical components, electric solid devices, etc., can solve the problem that the defect state density and surface charge trap density cannot be simultaneously and effectively reduced, so as to facilitate charge transport, wet Enhanced properties and spreadability, improved structure and thermal stability

Active Publication Date: 2019-10-08
西安科优特科技有限公司
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Problems solved by technology

However, the reported control methods for the electron transport layer cannot simultaneously and effectively reduce its defect state density and surface charge trap density.

Method used

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  • Perovskite solar cell with high-quality electron transport layer and preparation method thereof

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preparation example Construction

[0028] A method for preparing a perovskite solar cell with a high-quality electron transport layer, comprising the following steps:

[0029] Step 1: sequentially form a transparent conductive electrode 2 and a metal oxide electron transport layer 3 on a glass substrate 1, and the metal oxide electron transport layer 3 is deposited by chemical bath deposition, magnetron sputtering, electron beam deposition, spin coating method or non-vacuum chemical deposition method, the preparation temperature of the metal oxide electron transport layer 3 is 23-600°C, the thickness of the metal oxide electron transport layer 3 is 10-100nm, and the metal oxide electron transport layer 3 is oxidized Titanium, zinc oxide or tin oxide;

[0030] Step 2: After preparing the metal oxide electron transport layer 3, use the plasma-enhanced chemical vapor deposition method to bombard the oxygen-containing element plasma to generate oxygen radicals in the chemical vapor deposition system, and transport ...

Embodiment 1

[0035] A method for preparing a perovskite solar cell with a high-quality electron transport layer, comprising the steps of:

[0036] 1) Cleaning of transparent conductive electrode 2: based on figure 1 The glass substrate 1 with FTO transparent conductive electrodes 2 is selected as the structure, and the cleaning of the substrate in the ultrasonic cleaning machine is divided into the following four steps, ①cleaning with ethanol for 15 minutes; ②cleaning with acetone for 30 minutes; ③cleaning with isopropanol for 30 minutes; ④cleaning with ethanol for 15 minutes ; Then the cleaned glass substrate with electrodes was blown dry with nitrogen.

[0037] 2) Preparation of the metal oxide electron transport layer 3: after step 1), when the metal oxide semiconductor layer 3 is prepared by magnetron sputtering, the target material is titanium oxide as an example, the deposition gas atmosphere is argon and oxygen, The ratio is 29.4:0.6 sccm, the deposition temperature is 150° C., the...

Embodiment 2

[0043] A method for preparing a perovskite solar cell with a high-quality electron transport layer, comprising the steps of:

[0044] 1) Cleaning of transparent conductive electrode 2: based on figure 1 The glass substrate 1 with FTO transparent conductive electrodes 2 is selected as the structure, and the cleaning of the substrate in the ultrasonic cleaning machine is divided into the following four steps, ①cleaning with ethanol for 15 minutes; ②cleaning with acetone for 30 minutes; ③cleaning with isopropanol for 30 minutes; ④cleaning with ethanol for 15 minutes ; Then the cleaned glass substrate with electrodes was blown dry with nitrogen.

[0045] 2) Preparation of the metal oxide electron transport layer 3: after step 1), when using the non-vacuum chemical vapor deposition method to prepare the metal oxide semiconductor layer 3, taking zinc oxide as an example, the precursor solution is zinc acetate, and the solvent is water and methanol , 10 and 90 mL respectively, stirr...

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Abstract

The invention discloses a perovskite solar cell with a high-quality electron transport layer and a preparation method thereof. Light absorption layer, hole transport layer, metal electrode, the metal oxide electron transport layer is a metal oxide electron transport layer treated with oxygen free radicals, oxygen free radicals are produced by bombarding oxygen-containing gas with plasma . 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 perovskite solar cell with a high-quality electron transport layer and a preparation method thereof. Background technique [0002] With the depletion of fossil energy and the pollution of the environment in the process of use, the development of new energy has become an important guarantee for the sustainable development of human civilization, and solar photovoltaic is one of the most promising solutions. 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 surpassed that of organic sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/00H10K30/35H10K2102/00Y02E10/549
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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