Method for constructing silver thin film electrode through dip-coating method

Abstract

The invention discloses a method for constructing a silver thin film electrode through a dip-coating method. The method comprises the following steps that a glass sheet is cleaned and dried, and the cleaned and dried glass sheet serves as a substrate, and the method further comprises the following steps that silver nanoparticle alcohol dispersion liquid with the mass concentration of (3+ / -0.2) mg / ml is prepared; the substrate is dipped in the silver nanoparticle alcohol dispersion liquid and then is pulled upwards, suspending drying is carried out, and the steps of dipping, pulling upwards andsuspending drying are repeated in sequence; and finally, the obtained substrate with a coating is sintered. The silver thin film electrode prepared through the method has the advantages of good flatness and good conductivity.

Description

technical field [0001] The invention belongs to the application field of nanometer materials, and in particular relates to a preparation method for constructing a silver film electrode with relatively good flatness and conductivity by dipping and pulling. Background technique [0002] Due to its excellent conductivity, silver is often used as an electrode material in various electronic devices, such as a cathode material for OLEDs. However, the traditional method of preparing silver thin film electrodes, that is, the vacuum evaporation method, has high requirements for equipment, and the preparation process is cumbersome, the evaporation conditions are harsh, and the processing cost is relatively high. Therefore, it is necessary to develop new preparation routes. Preparation of silver electrodes by solution method using silver nanomaterials is a common alternative route. Due to its unique nanoscale effect, silver nanoparticles can be well dispersed in the solution, which i...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is impossible to form a relatively flat silver thin film electrode.

[0005] 2. Methods such as magnetron sputtering cannot obtain relatively flat silver film electrodes, and the cost of equipment is still high

[0006] 3. The liquid phase reduction method, please CN201010532873.9 adopts the liquid phase reduction method to obtain silver nanoparticles, disperses the prepared silver nanoparticles in water, then coats the dispersion on the substrate, and dries to obtain a silver nano film. The silver nanofilm is immersed in a strong electrolyte solution to obtain a film composed of sintered silver nanoparticles. This silver nanofilm has excellent electrical conductivity, but this method still cannot obtain a relatively smooth film.

[0007] 4. CN201510189550.7 combines physical magnetron sputtering and liquid phase chemical reduction methods to invent a method for preparing the front electrode of AZO / Ag / AZO thin-film solar cells, using physical sputtering to prepare AZO layers, and using chemical experiments to prepare Silver nanoparticle plasma, but this method still needs to use the method of physical magnetron sputtering, and the application area is narrow

[0010] Chinese patent application CN201510264772.0 combined the dipping and pulling method and the dual ion beam sputtering method to prepare metal copper thin film composite electrodes, but the method is cumbersome and still requires high-temperature annealing, so it is impossible to achieve a convenient full-solution process

[0013] Regarding the preparation methods of silver thin film electrodes mentioned above, some of the reaction temperature is too high and the process is cumbersome, and some of them have narrow application areas, or the obtained electrodes have uneven morphology and other problems.

Therefore, it is still a challenge to seek a simple, convenient, and all-solution method for the preparation of silver thin film electrodes.

Images