High-Performance Flexible Perovskite Solar Cells by
Using a Combination of Ultrasonic Spray-Coating and Low Thermal Budget
Photonic Curing
- Publication date
- Publisher
Abstract
Realizing the commercialization of
high-performance and robust perovskite solar cells urgently requires
the development of economically scalable processing techniques. Here
we report a high-throughput ultrasonic spray-coating (USC) process
capable of fabricating perovskite film-based solar cells on glass
substrates with a power conversion efficiency (PCE) as high as 13%.
Perovskite films with high uniformity, crystallinity, and surface
coverage are obtained in a single step. Moreover, we report USC processing
on TiO<sub>2</sub>/ITO-coated polyethylene terephthalate (PET) substrates
to realize flexible perovskite solar cells with a PCE as high as 8.1%
that are robust under mechanical stress. In this case, a photonic
curing technique was used to achieve a highly conductive TiO<sub>2</sub> layer on flexible PET substrates for the first time. The high device
performance and reliability obtained by this combination of USC processing
with optical curing appear very promising for roll-to-roll manufacturing
of high-efficiency, flexible perovskite solar cells
