Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 11, Pages 10689-10696Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b01843
Keywords
ultrasonic spray coating; substrate heating; hot air blowing; perovskite solar cells; scalable atmospheric deposition
Funding
- Natural Science Foundation of Tianjin City [17JCYBJC21200, 16JCYBJC16800, 18JCQNJC71800]
- National Natural Science Foundation of China [61504068]
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Substrate heating is the most common method for controlling crystallization during spray coating. However, due to poor controllability during substrate heating, the sprayed films have variable thicknesses and rich pores, which limit the efficiency of the device. Here, hot air blowing was applied to spray coating to promote the crystallization of perovskite films under ambient conditions. Upon employing a hot air blowing method that stimulated uniformly distributed nuclei growth, the pinhole-free and thickness-controllable perovskite film was prepared. This enabled more reproducible high-quality perovskite films to achieve a power conversion efficiency of 13.5% and obtain a stabilized power output of >12% in ambient conditions.
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