Preparation of perovskite solar cells by spraying technology

Perovskite solar cells -- Flexible electronics -- YMUS Ultrasonic spraying

Spraying is a solution deposition technology. In the study of perovskite photovoltaic devices, spraying is often used to prepare dense oxide layer and perovskite absorbent layer. Compared with other preparation technologies, spraying technology has strong versatility, low material waste rate, excellent compatibility with various substrates and even irregular substrates, and is compatible with roll-to-roll technology, which has great potential in the preparation of large-size perovskite devices.

The depositional process is divided into four stages:

1. The precursor liquid is atomized into small droplets through the ultrasonic nozzle;

2, atomized droplets falling on the surface of the substrate;

3, droplets reach the surface of the substrate to form a uniform and continuous wet film;

4, wet film drying into a solid film, in order to prepare high-quality film, we must optimize complex parameters, including substrate surface temperature, solution flow, solvent selection and nozzle height, etc.

Note: Ultrasonic spraying process

The perovskite solar cells with high energy conversion efficiency (PCE) were obtained by adjusting the deposition parameters of the perovskite thin films prepared by YMUS ultrasonic spraying technology. For industrial production, it is necessary to prepare electron layer (ETL), hole layer (HTL) and even electrode by ultrasonic spraying.

Note: YMUS-ZS400 Ultrasonic spraying system

Ultrasonic spraying is a very suitable technology for preparing large area perovskite batteries. By controlling the parameters of precursor system, solvent, substrate temperature, spraying distance, spraying speed and so on, the quality of the film can be well controlled. YMUS ultrasonic spraying system will develop and produce high quality equipment, innovate more technology applications, and gradually become the industry leader.