Intense Pulsed Light Sintering of CH3NH3PbI3 Solar Cells

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• 作者：Brandon W. Lavery ; Sudesh Kumari ; Hannah Konermann ; Gabriel L. Draper ; Joshua Spurgeon ; Thad Druffel
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：April 6, 2016
• 年：2016
• 卷：8
• 期：13
• 页码：8419-8426
• 全文大小：446K
• ISSN：1944-8252

文摘

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 μm 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 °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.