Chemical method for in-situ large-area controlled synthesis of perovskite type CH3NH3PBI3 membrane material based on lead simple-substance membrane

A chemical method and technology of thin-film materials, applied in metal material coating process, ion implantation plating, coating and other directions, can solve the problems of difficult large-area preparation and continuous production, poor device repeatability, complex process, etc. Prospects for laboratory preparation and industrial application, excellent crystallinity, and controllable reaction process

Active Publication Date: 2014-12-31
XUCHANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the current CH 3 NH 3 PB 3 The shortcomings of the film preparation process: the preparation process is complicated, the product is impure, and limited by the preparation conditions (such as spin coating, vacuum vapor deposition, etc.), it is difficult to prepare and produce continuous films in large areas, and the device has poor repeatability. Provide An in situ large-area controlled synthesis of perovskite-type CH based on metal lead single film 3 NH 3 PB 3 A chemical method for thin film materials, the method is simple to operate, low in energy consumption, low in production cost, and has broad industrial application prospects; the obtained CH 3 NH 3 PB 3 The film has high purity, uniform crystals on the surface of the film, and excellent crystallinity

Method used

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  • Chemical method for in-situ large-area controlled synthesis of perovskite type CH3NH3PBI3 membrane material based on lead simple-substance membrane
  • Chemical method for in-situ large-area controlled synthesis of perovskite type CH3NH3PBI3 membrane material based on lead simple-substance membrane
  • Chemical method for in-situ large-area controlled synthesis of perovskite type CH3NH3PBI3 membrane material based on lead simple-substance membrane

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Preparatory work: ITO conductive glass (Wuhan Auger: 222 crystal plane is the dominant growth crystal plane) in a vacuum of 4~6×10 -3 mbar DC magnetron sputtering a layer of metal lead elemental film with a thickness of about 400nm, and then put it in a desiccator for standby; wash the beaker with tap water and distilled water successively, and dry it for later use;

[0045] (2) Reaction steps: Prepare an anhydrous ethanol solution with a methylamine iodide concentration of 0.0100g / ml and an iodine element concentration of 0.0007g / ml in a beaker, and then place the beaker in a device with temperature control functions such as a biochemical incubator Constant temperature to 15°C, put the glass substrate with the surface of the metal lead elemental thin film into the reaction solution, React for 1 hour at 15°C ;

[0046] (3) Post-treatment: After the reaction, close the biochemical incubator, take out the sample, and dry it in a blast drying oven at 70°C. Will get ...

Embodiment 2

[0048] (1) Preparatory work: ITO conductive glass (Wuhan Aoge, 222 crystal plane is the dominant growth crystal plane) in a vacuum of 4~6×10 -3 mbar DC magnetron sputtering a layer of metal lead elemental film with a thickness of about 400nm, and then put it in a desiccator for standby; wash the beaker with tap water and distilled water successively, and dry it for later use;

[0049] (2) Reaction steps: Prepare an anhydrous ethanol solution with a methylamine iodide concentration of 0.0100g / ml and an iodine element concentration of 0.0007g / ml in a beaker, and then place the beaker in a device with temperature control functions such as a biochemical incubator Constant temperature to 15°C, put the glass substrate with the surface of the metal lead elemental thin film into the reaction solution, Reaction at 15°C for 2 hours ;

[0050] (3) Post-treatment: After the reaction, close the biochemical incubator, take out the sample, and dry it in a blast drying oven at 70°C. Will g...

Embodiment 3

[0052] (1) Preparatory work: ITO conductive glass (Wuhan Aoge, 222 crystal plane is the dominant growth crystal plane) in a vacuum of 4~6×10 -3 mbar DC magnetron sputtering a layer of metal lead elemental film with a thickness of about 400nm, and then put it in a desiccator for standby; wash the beaker with tap water and distilled water successively, and dry it for later use;

[0053] (2) Reaction steps: Prepare an anhydrous ethanol solution with a methylamine iodide concentration of 0.0100g / ml and an iodine element concentration of 0.0007g / ml in a beaker, and then place the beaker in a device with temperature control functions such as a biochemical incubator Constant temperature to 15°C, put the glass substrate with the surface of the metal lead elemental thin film into the reaction solution, Reaction at 15°C for 3 hours ;

[0054] (3) Post-treatment: After the reaction, close the biochemical incubator, take out the sample, and dry it in a blast drying oven at 70°C. Will get...

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Abstract

The invention relates to a chemical method for in-situ large-area controlled synthesis of a perovskite type CH3NH3PBI3 membrane material based on a lead simple-substance membrane. The method comprises: sputtering the lead simple-substance membrane on the surface of a substrate, then horizontally immersing the substrate material possessing the lead simple-substance membrane in an organic solution containing a simple substance iodine and iodinated methylamine, and performing a constant-temperature reaction to prepare a CH3NH3PBI3 membrane material in situ; or putting the substrate possessing the lead simple-substance membrane in a steam atmosphere of a simple substance iodine to perform iodination to generate a lead iodide membrane, then immersing in an organic solution containing iodinated methylamine, and performing a constant-temperature reaction to prepare the CH3NH3PBI3 membrane material in situ. The method is simple in operation, low in energy consumption and low in cost, and has wide industrial application prospect. The obtained CH3NH3PBI3 membrane is high in purity, uniform in membrane-surface crystal and excellent in crystallinity.

Description

technical field [0001] The invention belongs to the technical field of material chemistry, and in particular relates to an in-situ large-area controlled synthesis of perovskite-type CH based on metal lead single-substance films on different substrates. 3 NH 3 PB 3 Chemical approach to thin film materials. Background technique [0002] As early as the last century, the excellent properties of perovskites have been discovered, but they have not been applied in solar cell devices. This type of material mainly has the following advantages: (1) Due to the high charge carrier mobility and good light absorption performance of the inorganic components, the energy loss during the photoelectric conversion process is extremely low, and its theoretical conversion efficiency can reach up to 50 %, which is expected to greatly reduce the cost of solar cells; (2), the synthesis process is simple and cheap, and is more suitable for industrial production; (3), the crystallinity is good und...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/34C23C22/02C23C8/08
Inventor 郑直程佳美雷岩贾会敏何伟伟贺盈盈
Owner XUCHANG UNIV
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