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Mesoscopic perovskite photovoltaic cell with tin-oxide electron-transporting layer and preparation method thereof

A technology of electron transport layer and photovoltaic cell, which is applied in the direction of photovoltaic power generation, circuits, electrical components, etc., can solve the problems of complex preparation process and high cost of electron transport layer, achieve good photoelectric conversion efficiency and stable performance, reduce production cost, improve Effects of performance and photostability

Inactive Publication Date: 2015-04-29
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of complex preparation process and high cost of the electron transport layer of the traditional perovskite photovoltaic cell, the present invention provides a low-temperature-grown tin oxide electron transport layer mesoscopic perovskite photovoltaic cell and a preparation method thereof

Method used

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  • Mesoscopic perovskite photovoltaic cell with tin-oxide electron-transporting layer and preparation method thereof
  • Mesoscopic perovskite photovoltaic cell with tin-oxide electron-transporting layer and preparation method thereof
  • Mesoscopic perovskite photovoltaic cell with tin-oxide electron-transporting layer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1) Wash. In the test, the FTO conductive glass substrate should be cleaned and dried first. Clean the FTO conductive glass of appropriate size with detergent first, and then rinse it with deionized water. Then use deionized water, acetone, ethanol to clean ultrasonically, and finally blow dry with nitrogen for later use.

[0046] 2) Perovskite CH 3 NH 3 PB 3 Absorbing layer preparation. Configuration of perovskite solution: 1M PbCl 2 Dissolve in dimethylformamide and stir at 60°C for 24 hours. Then use the homogenizer to mix the PbCl 2 The solution was spin-coated on the FTO conductive glass substrate, and then annealed at 70°C for 30 minutes. Spin coated with PbCl 2 The sample was placed in 10 mg / L CH 3 NH 3 Immerse in isopropanol solution for 10 minutes; finally rinse the sample with isopropanol, blow dry with nitrogen, and anneal at 70°C for 30 minutes.

[0047] 3) Preparation of hole transport layer. perovskite CH with a homogenizer 3 NH 3 PB 3 A lay...

Embodiment 2

[0051] 1) Conductive substrate cleaning. With embodiment 1.

[0052] 2) Electron transport layer preparation. Configuration of hydrothermal solution: Add 0.025Mol / L tin oxalate and 0.025Mol / L hexamethylenetetraammonia into a jar, the solvent is deionized water, stir for 30min; put the cleaned transparent conductive substrate into the step In the prepared solution; put the solution in a 95°C incubator for 3 hours, take it out after naturally cooling to room temperature in the incubator, and deionize the SnO 2 The sediment on the surface of the film was rinsed and dried with nitrogen to obtain SnO 2 dense layer of nanorods, such as image 3 (right) described.

[0053] 3) Perovskite CH 3 NH 3 PB 3 Absorbing layer preparation. With embodiment 1.

[0054] 4) Preparation of hole transport layer. With embodiment 1.

[0055] 5) Electrode preparation. With embodiment 1.

[0056] 6) Test, same as Example 1. The obtained photoelectric conversion efficiency parameters are, o...

Embodiment 3

[0058] 1) Conductive substrate cleaning. With embodiment 1.

[0059] 2) Double-layer nanorod mesoporous SnO 2 Electron transport layer preparation. The configuration of the hydrothermal solution: the same as in Example 2; put the cleaned transparent conductive substrate into the solution prepared in the step; put the solution in a 75°C incubator for 6 hours, and cool it to room temperature naturally in the incubator Take out, deionize the SnO with deionized water 2 The sediment on the surface of the film was washed and dried with nitrogen to obtain SnO 2 Nanorod mesoporous layers, such as Figure 4 (right) described.

[0060] 3) Perovskite CH 3 NH 3 PB 3 Absorbing layer preparation. With embodiment 1.

[0061] 4) Preparation of hole transport layer. With embodiment 1.

[0062] 5) Electrode preparation. With embodiment 1.

[0063] 6) Test, same as Example 1. The obtained photoelectric conversion efficiency parameters are, open circuit voltage 1.06V, short circuit...

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Abstract

The invention relates to a perovskite photovoltaic cell with bilayer nanometer mesoporous electron-transporting layer and preparation method thereof. The cell comprises a conducting substrate, an electron-transporting layer with double-layer structure, a perovskite light absorption layer, a hole-transporting layer and metal electrodes. The perovskite photovoltaic cell with bilayer nanometer mesoporous electron-transporting layer has the advantages that the SnO2 with one step method low-temperature growth, is used as the electron-transporting layer in the photovoltaic cell, replaces the TiO2 electron-transporting layer with two steps method high temperature sintering, and the preparation process is simplified. The mesoporous perovskite photovoltaic cell prepared with one step low-temperature growth method obtains 13.82% of highlight electricity transfer efficiency, and reduces the manufacturing cost effectively at the same time. Compared with a planer construction, the mesoporous structure used in the perovskite photovoltaic cell is liable for the adherence of the perovskite light absorption material. SnO2 conducts a smaller dissimilation on the perovskite light absorption layer than the TiO2 does, the performance and stability of the cell are improved in this way. The perovskite photovoltaic cell with bilayer nanometer mesoporous electron-transporting layer and preparation method thereof plays a great promoting role in the development and popularization on the flexible solar cell, and further promotes the industrialized application on the perovskite solar cell.

Description

technical field [0001] The present invention relates to a kind of SnO 2 The invention discloses an electron transport layer mesoscopic perovskite photovoltaic cell and a preparation method thereof, belonging to the field of optoelectronic materials and devices. Background technique [0002] In recent years, the energy crisis has become more and more urgent, and the research on clean energy has become more and more urgent. Clean energy includes solar energy, wind energy, hydroelectric energy, etc. Solar energy is inexhaustible, and photovoltaic cells can directly convert solar energy into electrical energy and have great application prospects. The current solar cells have developed from silicon solar cells to more mature organic solar cells, dye-sensitized solar cells and copper indium doped tin solar cells. However, there are still many problems in the application of these batteries such as high cost and poor stability. Therefore, the development and utilization of solar ...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K30/00H10K30/81Y02E10/549
Inventor 方国家刘琴柯维俊秦敏超
Owner WUHAN UNIV
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