High-Performance Flexible Perovskite Solar Cells by Using a Combination of Ultrasonic Spray-Coating and Low Thermal Budget Photonic Curing

Journal Article · Thu Jan 01 00:00:00 EST 2015 · ACS Photonics

OSTI ID:1185932

Sanjib, Das ^[1]; Yang, Bin ^[2]; Gu, Gong ^[1]; Joshi, Pooran C ^[2]; Ivanov, Ilia N ^[2]; Rouleau, Christopher ^[2]; Aytug, Tolga ^[2]; Geohegan, David B ^[2]; Xiao, Kai ^[2]

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1. University of Tennessee, Knoxville (UTK)
2. ORNL

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 power conversion efficiency (PCE) as high as 13.04%. Perovskite films with high uniformity, crystallinity, and surface coverage are obtained in a single step. Moreover, we report USC processing on TiOx/ITO-coated polyethylene terephthalate (PET) substrates to realize flexible perovskite solar cells with PCE as high as 8.02% that are robust under mechanical stress. In this case, an optical curing technique was used to achieve a highly-conductive TiOx 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 appears very promising for roll-to-roll manufacturing of high-efficiency, flexible perovskite solar cells.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1185932
• Journal Information: ACS Photonics, Vol. 2, Issue 6
• Country of Publication: United States
• Language: English