Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 13, Pages 8419-8426Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b10166
Keywords
intense pulsed light; perovskite; scalable manufacturing; photovoltaics; sintering; methylammonium lead iodide
Funding
- Conn Center for Renewable Energy Research at University of Louisville
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Perovskite solar cells utilizing a two-step deposited CH3NH3PbI3 thin film were rapidly sintered using an intense pulsed light source. For the first time, a heat treatment has shown the capability of sintering methylammonium lead iodide perovskite and creating large crystal sizes approaching 1 mu m without sacrificing surface coverage. Solar cells with an average efficiency of 11.5% and a champion device of 12.3% are reported. The methylammonium lead iodide perovskite was subjected to 2000 J of energy in a 2 ms pulse of light generated by a xenon lamp, resulting in temperatures significantly exceeding the degradation temperature of 150 degrees C. The process opens up new opportunities in the manufacturability of perovskite solar cells by eliminating the rate-limiting annealing step, and makes it possible to envision a continuous roll-to-roll process similar to the printing press used in the newspaper industry.
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