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Perovskite thin film coating spin-coating thickness measurement solution

2025-09-02 15:23:22 admin

Perovskite thin film coating

Spin-coating thickness measurement solution

Unikang Technology Co., LTD

Directory

01	Overview of Perovskite Solar Cell Films
02	The advantages of perovskite solar cells
03	Preparation of perovskite films
04	Measurement Requirements and solutions for perovskite thin films

Overview of Perovskite Solar Cell Films

Overview of Perovskite Batteries

With the development of new materials science, the first-generation silicon-based solar cells that have been commercially available have been greatly restricted in their future development due to the need for high-purity production materials and high energy consumption. The second-generation cadmium telluride is also not an ideal new material for solar cells because of its highly toxic raw materials. In recent years, new perovskite materials discovered have gradually come into the view of scientists Its photoelectric conversion rate can reach over 20.1%, and the raw materials are abundant and easy to prepare, quickly becoming the darling of scientists' research.

Perovskite solar cells are regarded as the third-generation solar cells, and the perovskite crystal structure is ABX3 (where A represents CH)₃NH₃⁺B is generally Pb₂⁺Wait, X is Cl^-"Br"^-Perovskite minerals and similar crystals are collectively referred to as perovskite minerals, which were named one of the top 10 technological advancements of the future by Nature in 2013.

?According to statistics, solar cells made in China account for approximately 70% of the global market and occupy a very important position in the national strategy of new energy.

The advantages of perovskite solar cells

Advantages of Perovskite Cells

Perovskite solar cells have the following multiple advantages

High conversion efficiency: The current documented conversion rate has reached 25%

Perovskite materials have a much longer carrier lifetime than other solar cell materials

Simple structure

The crystallization performance of materials is better at low temperatures, which is conducive to the diffusion of carriers

It can effectively transfer electrons and holes

Both the electron and hole diffusion lengths can exceed 1000nm

Wider application range

Perovskite solar cells belong to thin-film materials

Batteries can be fabricated on flexible substrates such as plastic and fabric

It is a better choice for flexible energy devices

The production process is relatively simple and the raw material sources are abundant

It can be prepared by a process that does not require vacuum conditions

The preparation process has low energy consumption and is environmentally friendly

Preparation of perovskite films

Fabrication of perovskite thin films

At present, the general method for preparing perovskite films is the spin coating method

The specific operation of the spin coating method is to spin coat the precursor solution onto the substrate, add the reverse solvent during the spin coating process, anneal and crystallize to form a perovskite film. However, the above-mentioned method, due to the limitation of the size of the spin coating equipment, cannot prepare large-area perovskite films.

There are more preparation methods. Scientists are conducting research and experiments.

Measurement Requirements and solutions for perovskite thin films

Perovskite Thin Film Measurements

Customer testing requirements:

Real-time reflectance testing (380-1050 nm) was conducted during the preparation of thin films.

Real-time transmittance testing (380-1050 nm) was conducted during the preparation of thin films.

Real-time film thickness detection is carried out during film preparation

Solution design

The first step: Design the spin coating instrument according to the customer's design requirements

Step 2: Integrate the spin coating instrument software, allowing for free setting of start, stop and rotational speed

Step 3: Integrate the Filmetrics F20 film thickness gauge

Conduct reflection, transmission and film thickness tests

Physical display

Customized spin coating instrument

F20 Film thickness measuring instrument

Product parameters

On-site installation and testing

1. Install the spin coating instrument and film thickness gauge

2. Software speed test of the spin coating instrument

3.F20 Baseline calibration

4. Spin coating with perovskite solution

5. Online reflection, transmission and film thickness tests are conducted respectively

Scheme designer

Pan Wei

Senior Technical Service Engineer

Having traveled far and wide, we have served over a hundred enterprises and institutions of higher learning so far, helping customers install equipment and solve problems. Experienced and dedicated. Not only does he have excellent technical skills, but he also possesses design capabilities. The above-mentioned spin-coating measurement system is just one of Pan's outstanding designs.

Face the challenges bravely

We have been deeply involved in the film measurement industry for over a decade. No matter what problems you have in film measurement, our technical experts can provide you with valuable advice or solutions. Welcome to call us. We are very glad to discuss your application issues with you.

Consultation hotline: 400-186-8882

E-mail: info@unicorn-tech.com

Unikang Technology Co., LTD

Yiying Technology (Shanghai) Co., LTD