Gas-assisted coating of Bi-based (CH3NH3)(3)Bi2I9 active layer in perovskite solar cells

作者：Okano Takayuki; Suzuki Yoshikazu^*

来源：Materials Letters, 2017, 191: 77-79.

DOI：10.1016/j.matlet.2017.01.047

• Perovskite solar cells
• Lead-free
• Bi-based
• (CH3NH3)(3)Bi2I9
• Gas-assisted

Methylammonium bismuth iodide, (CH3NH3)(3)Bi2I9, is a promising lead-free perovskite active layer for solar cells. In this study, by using gas-assisted deposition method, we have successfully prepared dense and smooth (CH3NH3)(3)Bi2I9 active layer, resulting in 25% improvement in V-OC (from 0.548 V to 0.686 V) and 17% improvement in power conversion efficiency (from 0.070% to 0.082%), compared with the conventional 1-step method.

• 出版日期2017-3-15