采用超快 PbI 沉积速率制备的高效、灵活的钙钛矿太阳能模块，超过 8%。
An efficient, flexible perovskite solar module exceeding 8% prepared with an ultrafast PbI deposition rate.
机构信息
State key lab of advanced technology for materials synthesis and processing, Wuhan University of Technology, Wuhan, 430070, China.
Hubei key laboratory of low dimensional optoelectronic materials and devices, Hubei University of Arts and Science, Xiangyang, 441053, China.
出版信息
Sci Rep. 2018 Jan 11;8(1):442. doi: 10.1038/s41598-017-18970-y.
Large-area, pinhole-free CHNHPbI perovskite thin films were successfully fabricated on 5 cm × 5 cm flexible indium tin oxide coated polyethylene naphthalate (ITO-PEN) substrates through a sequential evaporation/spin-coating deposition method in this research. The influence of the rate-controlled evaporation of PbI films on the quality of the perovskite layer and the final performance of the planar-structured perovskite solar cells were investigated. An ultrafast evaporation rate of 20 Å s was found to be most beneficial for the conversion of PbI to CHNHPbI perovskite. Based on this high-quality CHNHPbI film, a resultant flexible perovskite solar sub-module (active area of 16 cm) with a power conversion efficiency of more than 8% and a 1.2 cm flexible perovskite solar cell with a power conversion efficiency of 12.7% were obtained.
本文通过在 5cm×5cm 的柔性铟锡氧化物涂覆聚萘二甲酸乙二醇酯（ITO-PEN）基底上采用顺序蒸发/旋涂沉积法成功制备了大面积、无针孔的 CHNHPbI 钙钛矿薄膜。研究了 PbI 薄膜的速率控制蒸发对钙钛矿层质量和平面结构钙钛矿太阳能电池最终性能的影响。发现超快的 20Å/s 的蒸发速率最有利于 PbI 转化为 CHNHPbI 钙钛矿。基于这种高质量的 CHNHPbI 薄膜，获得了功率转换效率超过 8%的柔性钙钛矿太阳能子模块（有效面积为 16cm）和功率转换效率为 12.7%的 1.2cm 柔性钙钛矿太阳能电池。
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