High-quality perovskite films play a vital role in determining the performance of inverted perovskite solar cells. Here, for the first time, glucose is introduced to realize high quality MAPbI₃ perovskite film, boosting the power conversion efficiency from 17.53% to 20.15% with an inverted planar configuration. In addition, all device parameters exhibit excellent reproducibility. More encouragingly, the current–voltage hysteresis is significantly suppressed in terms of the hysteresis index (control device: 0.083, glucose-modified device: 0.035). It is found that glucose could contribute to the enlargement of grain size and the decrease of grain boundaries in perovskite film. The decreased defect density and corresponding suppressed charge recombination account for the enchancement of J_sc and FF. Meanwhile, the stability of glucose-modified devices under conditions of heat, light and moisture is significantly improved. These findings indicate the eminent effects of glucose on performance optimization and stability enhancement of perovskite solar cells, which is potentially promising for other optoelectronic applications.

中文翻译：

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通过葡萄糖修饰大大提高了倒置平面钙钛矿太阳能电池的性能

高质量的钙钛矿薄膜在确定倒置钙钛矿太阳能电池的性能方面起着至关重要的作用。在这里，首次引入葡萄糖以实现高质量的MAPbI ₃钙钛矿薄膜，通过倒置平面配置将功率转换效率从17.53％提高到20.15％。此外，所有设备参数均具有出色的可重复性。更令人鼓舞的是，电流-电压磁滞在磁滞指数方面得到了显着抑制（控制装置：0.083，葡萄糖修饰装置：0.035）。研究发现，葡萄糖可以促进钙钛矿薄膜的晶粒尺寸增大和晶界减小。缺陷密度的降低和相应的抑制的电荷重组抑制了J的增强_sc和FF。同时，显着提高了在热，光和湿气条件下葡萄糖修饰的装置的稳定性。这些发现表明葡萄糖对钙钛矿太阳能电池性能优化和稳定性增强的显着影响，这对于其他光电应用具有潜在的前景。