The Problem:
Perovskite solar cells present several advantages over traditional solar cells. However, in order to maximize their commercial potential, perovskite must be rapidly annealed for mass production. Thermal annealing involving hot plates or ovens is lengthy and not energy efficient. The application of this method is very time-consuming and not compatible to high-speed manufacturing processes.
The Solution:
Researchers at the University of Alabama have developed a new method of annealing perovskite utilizing UV LED lights operating at an irradiation level near the peak absorption of perovskite. The process allows for layer-specific annealing of perovskite without damaging underlying films. In addition, this process allows for annealing to be performed in a fraction of the time it takes for traditional thermal annealing techniques.
Benefits:
Patent:
US20200127204A1
Publication:
"Rapid Layer-Specific Annealing Enabled by Ultraviolet LED with Estimation of Crystallization Energy for High-Performance Perovskite Solar Cells"