Scalable Deposition of High-Efficiency Perovskite Solar Cells by Spray-Coating

Journal Article · 04 May 2018 · ACS Applied Energy Materials

DOI: https://doi.org/10.1021/acsaem.8b00328 · OSTI ID:1439361

Ulicna, Sona ^[1]; Dou, Benjia ^[2]; Kim, Donghoe ^[2]; Zhu, Kai ^[2]; Walls, John M. ^[1]; Bowers, Jake W. ^[1]; Van Hest, Marinus F  ^[2]

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1. Loughborough Univ., Leicestershire (England)
2. National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Spray-deposition is a low-cost, roll-to-roll compatible technique that could potentially replace spin-coating for the deposition of highly efficient perovskite solar cells. Here, perovskite active layers were fabricated in air using an ultrasonic spray system and compared with equivalent spin-coated films. A chlorine-containing perovskite ink with a wide processing window coupled with an antisolvent extraction resulted in perovskite films with relatively rougher surfaces than those spin-coated. A power conversion efficiency (PCE) of 17.3% was achieved with an average of 16.3% from 24 devices. Despite observing differences in film roughness and structure, the performance of sprayed perovskite solar cells was comparable to that of the spin-coated cells processed in an inert atmosphere, showing the versatility of perovskite processing.

• Research Organization: National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• Grant/Contract Number: AC36-08GO28308; DE AC36-08G028308
• OSTI ID: 1439361
• Alternate ID(s): OSTI ID: 1596253
• Report Number(s): NREL/JA-5K00-75908
• Journal Information: ACS Applied Energy Materials, Vol. 1, Issue 5; ISSN 2574-0962
• Publisher: American Chemical Society (ACS)Copyright Statement
• Country of Publication: United States
• Language: English