Yue Wang, Yang Hang, Cai Haoyu, Xiong Yiming, Zhou Tao, Liu Yongjun, Zhao Juan, Huang Fuzhi, Cheng Yi-Bing, Zhong Jie
Research Centre for Advanced Thin Film Photovoltaics, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China.
Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Foshan, Guangdong, 528216, P. R. China.
Adv Mater. 2023 Sep;35(36):e2301548. doi: 10.1002/adma.202301548. Epub 2023 Jul 30.
Perovskite solar cells (PSCs) show great promise for next-generation building-integrated photovoltaic (BIPV) applications because of their abundance of raw materials, adjustable transparency, and cost-effective printable processing. Owing to the complex perovskite nucleation and growth control, the fabrication of large-area perovskite films for high-performance printed PSCs is still under active investigation. Herein, the study proposes an intermediate-phase-transition-assisted one-step blade coating for an intrinsic transparent formamidinium lead bromide (FAPbBr ) perovskite film. The intermediate complex optimizes the crystal growth path of FAPbBr , resulting in a large-area, homogeneous, and dense absorber film. A champion efficiency of 10.86% with high open-circuit voltage up to 1.57 V is obtained with a simplified device architecture of glass/FTO/SnO /FAPbBr /carbon. Moreover, the unencapsulated devices maintain 90% of their initial power conversion efficiency after aging at 75 °C for 1000 h in ambient air, and 96% after maximum power point tracking for 500 h. The printed semitransparent PSCs, with average visible light transmittance over 45%, demonstrate high efficiencies for both small devices (8.6%) and 10 × 10 cm modules (5.55%). Finally, the ability to customize the color, transparency, and thermal insulation properties of FAPbBr PSCs makes them high prospects as multifunctional BIPVs.
钙钛矿太阳能电池（PSCs）因其原材料丰富、透明度可调节以及具有成本效益的可印刷加工工艺，在下一代建筑一体化光伏（BIPV）应用中显示出巨大潜力。由于钙钛矿成核和生长控制复杂，用于高性能印刷PSCs的大面积钙钛矿薄膜的制备仍在积极研究中。在此，该研究提出了一种用于本征透明溴化甲脒铅（FAPbBr₃）钙钛矿薄膜的中间相转变辅助一步刮涂法。中间配合物优化了FAPbBr₃的晶体生长路径，从而得到大面积、均匀且致密的吸收层薄膜。采用玻璃/FTO/SnO₂/FAPbBr₃/碳的简化器件结构，获得了高达1.57 V的高开路电压下10.86%的冠军效率。此外，未封装的器件在75°C的环境空气中老化1000小时后保持其初始功率转换效率的90%，在最大功率点跟踪500小时后保持96%。印刷的半透明PSCs平均可见光透过率超过45%，在小尺寸器件（8.6%）和10×10 cm²模块（5.55%）中均表现出高效率。最后，FAPbBr₃ PSCs能够定制颜色、透明度和隔热性能，使其作为多功能BIPV具有很高的应用前景。
