Manufacturing Equipment for Perovskite Solar Cell Coatings
Ultrasonic spray coating is a cost effective method for depositing high uniformity thin films in the fabrication of perovskite solar cells. The tight drop distribution achieved with ultrasonic spray contributes to increased uniformity and optimal surface area coverage. Adjusting process parameters such as substrate temperature, precursor, and film thickness results in highly crystalline films. Individual process parameters are easily controlled using ultrasonic spray in order to optimize spray characteristics, creating high efficiency perovskite solar cells, potentially without the need for additional high temperature sintering processes. Ultrasonic spray can be used for traditional ITO/Glass substrates or transparent, flexible substrates.
Researchers from Oak Ridge National Laboratory in Oak Ridge, TN, reported achieving 13% efficiency using Sono-Tek ultrasonic spray process in the fabrication of perovskite solar cells. Their research is published in ACS Photonics, May 2015, in a paper titled “High-Performance Flexible Perovskite Solar Cells by Using a Combination of Ultrasonic Spray-Coating and Low Thermal Budget Photonic Curing”. The paper discusses methods for the commercialization of high-performance, robust perovskite solar cells.
Sono-Tek Ultrasonic Nozzles Feature:
- Highly uniform thin films
- Very tight drop distribution (choice of drop size depending upon nozzle frequency)
- Non-clogging atomized spray
- Ultrasonic vibrations break apart agglomerated particles in suspension during the spray process
- Efficient low temperature spray process with highly effective use of spray material
Scalable Manufacturing Solutions
Sono-Tek ultrasonic nozzles are fully integrated into full coating solutions, from R&D tabletop systems to inline wide area systems for integration with continuous roll-to-roll manufacturing. The same core nozzle technology is used in all Sono-Tek coating equipment, making scaling from R&D to production volume manufacturing a seamless transition.