阅读说明：本技术 一种织网状的钙钛矿及其制备方法和应用 (A kind of perovskite and its preparation method and application of knitmesh shape ) 是由 陈梦诗 肖也 于 2019-07-11 设计创作，主要内容包括：本发明属于钙钛矿材料技术领域,公开了一种织网状的钙钛矿及其制备方法和应用。该方法是将FABr和PbBr加入溶剂中,配制成0.5mol/L～3mol/L的前驱液,再将前驱液稀释10～30倍后滴加在FTO导电玻璃衬底上,再滴加甲苯,烘干制备出钙钛矿单晶；再将所得钙钛矿单晶浸泡于异辛酸钴溶液中5～30min,然后将样品放入干燥箱烘干,最终得到织网状的钙钛矿。该方法采用反溶剂法,制备出钙钛矿单晶,再利用异丙醇为溶剂的异辛酸钴溶液制作出织网状钙钛矿。该钙钛矿材料可应用在太阳能电池领域中。(The invention belongs to perovskite material technical fields, disclose a kind of perovskite and its preparation method and application of knitmesh shape.This method is that FABr and PbBr is added in solvent, is configured to the precursor liquid of 0.5mol/L~3mol/L, then is added dropwise in FTO Conducting Glass after precursor liquid is diluted 10~30 times, then toluene is added dropwise, and perovskite monocrystalline is prepared in drying；Gained perovskite monocrystalline is soaked in 5~30min in cobalt iso-octoate solution again, sample is then put into drying box drying, finally obtains the perovskite of knitmesh shape.This method uses anti-solvent method, prepares perovskite monocrystalline, and recycling isopropanol is that the cobalt iso-octoate solution of solvent produces knitmesh shape perovskite.The perovskite material can be applicable in area of solar cell.)

1. a kind of preparation method of the perovskite of knitmesh shape, it is characterised in that including following operating procedure: FABr and PbBr are added Enter in solvent, be configured to the precursor liquid of 0.5mol/L~3mol/L, then is added dropwise after precursor liquid is diluted 10~30 times in FTO conduction In glass substrate, then toluene is added dropwise, perovskite monocrystalline is prepared in drying；It is molten that gained perovskite monocrystalline is soaked in cobalt iso-octoate again Then sample is put into drying box drying, finally obtains the perovskite of knitmesh shape by 5~30min in liquid.

2. preparation method according to claim 1, it is characterised in that: the FTO Conducting Glass before the use into Row cleaning: being put into Piranha solution for FTO electro-conductive glass and impregnate, and deionized water is then added and is diluted to neutrality, obtains clean FTO Conducting Glass.

3. preparation method according to claim 2, it is characterised in that: the time of the immersion is 8~12h；The anthropophagy Fish solution is the mixture of the concentrated sulfuric acid and 30% hydrogen peroxide.

4. preparation method according to claim 1, it is characterised in that: the solvent is DMF.

5. preparation method according to claim 1, it is characterised in that: the cobalt iso-octoate solution is using isopropanol as solvent It is configured to the solution that concentration is 5mmol~50mmol.

6. preparation method according to claim 1, it is characterised in that: described to be added dropwise 1 after 10~30 times of precursor liquid dilution ~30ul is in FTO Conducting Glass, then 0.5~1ml toluene is added dropwise, and is put into 20~50 DEG C of baking oven drying, prepares calcium titanium Mine monocrystalline.

7. preparation method according to claim 1, it is characterised in that: the time of the drying is 1~3h, the temperature of drying It is 30~60 DEG C.

8. a kind of perovskite for the knitmesh shape that preparation methods described in any item according to claim 1~7 are prepared.

9. application of the perovskite of knitmesh shape according to claim 8 in area of solar cell.

Technical field

The invention belongs to perovskite material preparation technical field, in particular to the perovskite of a kind of knitmesh shape and its preparation side Method and application.

Background technique

In recent years, energy crisis became people's major issue urgently to be resolved.Because perovskite material shows uniqueness Performance, make its solar battery preparation be filled with new vitality.This stern challenge especially is converted in face of solar energy, This green energy resource of sunlight can be absorbed and utilized to effectively improve the efficiency of solar battery in perovskite material, so that exploitation ratio The perovskite material that surface area is big, stability is high, optical response range is wide becomes the important content studied instantly.

Perovskite is a kind of functional material with excellent optically and electrically performance, in solar battery, light-emitting diodes Pipe, the fields such as micro- laser are with a wide range of applications.Metal halide perovskite (MHP) material is due to its excellent photo electric Matter was quickly grown in photoelectric field in recent years.And FABrBr₃It is a kind of current very popular organic and inorganic perovskite material, Since it is with good light absorpting ability, in a variety of necks such as gas sensor, gas sensor, electrode material and solar battery Domain has broad application prospects.However as people to FABrBr₃Further research, it is found that it is also a kind of good light Catalyst, more and more people apply it to photocatalysis field.Photocatalysis is in the ultraviolet lighting with higher-energy Penetrate what lower excitation generated, but due to FABrBr₃The specific surface area of monocrystalline is smaller, and the active site that can participate in reaction is less, So photocatalysis efficiency is limited.In addition, since the photo-generate electron-hole for playing key effect during light-catalysed is to shakiness Fixed and be easy to compound, which also limits FABrBr₃The performance of photocatalysis.Therefore, in order to preferably play FABrBr₃In Effect in photocatalysis field must just solve the problems, such as two aspects: (1) increasing material specific surface area；(2) photoproduction electricity is reduced Son-hole pair recombination rate.

Summary of the invention

In order to overcome shortcoming and deficiency existing in the prior art, the primary purpose of the present invention is that providing a kind of knitmesh shape Perovskite preparation method；This method is specifically to use solvent-thermal process method to prepare monocrystalline perovskite material, then made The perovskite of standby knitmesh shape out, this method preparation process are simple and low in cost.

Another object of the present invention is to provide a kind of perovskite of knitmesh shape that above-mentioned preparation method is prepared.

A further object of the present invention is to provide a kind of applications of the perovskite of above-mentioned knitmesh shape.

The object of the invention is achieved through the following technical solutions:

A kind of preparation method of the perovskite of knitmesh shape, including following operating procedure: FABr and PbBr is added in solvent, It is configured to the precursor liquid of 0.5mol/L~3mol/L, then is added dropwise after precursor liquid is diluted 10~30 times in FTO Conducting Glass On, then toluene is added dropwise, perovskite monocrystalline is prepared in drying；Gained perovskite monocrystalline is soaked in 5 in cobalt iso-octoate solution again~ Then sample is put into drying box drying, finally obtains the perovskite of knitmesh shape by 30min.

The FTO Conducting Glass is cleaned before the use: FTO electro-conductive glass is put into Piranha solution leaching Then bubble is added deionized water and is diluted to neutrality, obtains clean FTO Conducting Glass.

The time of the immersion is 8~12h；The Piranha solution is the mixture of the concentrated sulfuric acid and 30% hydrogen peroxide.

The solvent is DMF.

The cobalt iso-octoate solution is the solution for being configured to concentration by solvent of isopropanol as 5mmol~50mmol.

It is described will precursor liquid dilute 10~30 times after 1~30ul is added dropwise in FTO Conducting Glass, then be added dropwise 0.5~ 1ml toluene is put into 20~50 DEG C of baking oven drying, prepares perovskite monocrystalline.

The time of the drying is 1~3h, and the temperature of drying is 30~60 DEG C.

A kind of perovskite for the knitmesh shape being prepared according to above-mentioned preparation method.

Application of the perovskite of above-mentioned knitmesh shape in area of solar cell.

The present invention increases its specific surface area, increases the active sites for participating in reaction by preparing the perovskite of knitmesh shape Point shortens the migration road warp of carrier, reduces hole and electronics is compound, to increase the electrons and holes for participating in reaction Quantity improves reaction rate.

Compared with prior art, the present invention has the following advantages and beneficial effects:

(1) present invention uses anti-solvent method, and using DMF as solvent, FABr and PbBr is added, reaction precursor liquid is configured, in FTO On prepare perovskite monocrystalline, then FTO is soaked in cobalt iso-octoate solution, obtains the perovskite of knitmesh shape.

(2) perovskite for the knitmesh shape that the present invention synthesizes increases specific surface area, can effectively improve the service life of carrier, Improve the performance of material.

(3) equipment and preparation process needed for the present invention are simple, low in cost, can directly produce in enormous quantities.

Detailed description of the invention

Fig. 1 is what the perovskite of the knitmesh shape prepared in embodiment 1 was observed under 1200 times of scanning electron microscope Surface SEM photograph.

Fig. 2 is the table that the perovskite of knitmesh shape prepared by embodiment 1 is observed under 3000 times of scanning electron microscope Face SEM photograph.

Specific embodiment

Below with reference to embodiment, the present invention is described in further detail, and embodiments of the present invention are not limited thereto. Unless otherwise specified, the conventional means that technological means used in embodiment is well known to those skilled in the art.Except non-specifically Illustrate, reagent that the present invention uses, method and apparatus is the art conventional reagents, method and apparatus.

Piranha solution used in the following embodiment is the mixture of the concentrated sulfuric acid and 30% hydrogen peroxide.