Solar cell is currently the most widely used micro-energy harvesting device in outdoor unattended system field due to high conversion efficiency. However, the photoelectric conversion efficiency of solar cells is easily affected by surface reflection, dust pollution and weather conditions. Meanwhile, the reported researches only alleviated the influence of some of these factors. Here, an integrated energy harvester with a multifunctional 3D patterned hydrophobic thin film was designed to maintain and improve the working performance of solar cells. In which, the patterned film serves as both a self-cleaning and an anti-reflection layer to enhance the performance of solar cell, also, it can accumulate charges based on triboelectric mechanism when raindrops hit its surface. Compared with the tempered glass coated solar cell, the power conversion efficiency of the patterned film coated solar cell can be increased by 1.45%. In addition, by reducing the van der Waals force between the dust and the film, enhancing the hydrophobicity of the surface and achieving electrostatic dust removal based on the friction mechanism, multi-effect self-cleaning effect can be achieved. Furthermore, while achieving the electrostatic dust removal, the patterned film can also collect raindrop energy as a beneficial supplement to solar cells in rainy days. Therefore, the introduction of multifunctional 3D patterned film with excellent optical and electrical properties provides a simple and low-cost technical strategy and a stronger guarantee for the high efficiency and wide application of solar cells.

太阳能电池由于转换效率高，是目前户外无人值守系统领域应用最广泛的微能量收集装置。然而，太阳能电池的光电转换效率容易受到表面反射、灰尘污染和天气条件的影响。同时，报道的研究只是减轻了其中一些因素的影响。在这里，设计了一种具有多功能 3D 图案化疏水薄膜的集成能量收集器，以保持和提高太阳能电池的工作性能。其中，图案化薄膜既可作为自清洁层，又可作为抗反射层以提高太阳能电池的性能，并且当雨滴撞击其表面时，它可以基于摩擦起电机制积累电荷。与钢化玻璃镀膜太阳能电池相比，图案化覆膜太阳能电池的功率转换效率可提高1.45%。此外，通过降低灰尘与薄膜之间的范德华力，增强表面的疏水性，实现基于摩擦机理的静电除尘，可达到多效自洁效果。此外，在实现静电除尘的同时，图案化薄膜还可以收集雨滴能量，作为雨天太阳能电池的有益补充。因此，具有优异光电性能的多功能3D图案化薄膜的引入，为太阳能电池的高效率和广泛应用提供了一种简单、低成本的技术策略和更有力的保障。通过降低灰尘与薄膜之间的范德华力，增强表面的疏水性，实现基于摩擦机制的静电除尘，可达到多效自洁效果。此外，在实现静电除尘的同时，图案化薄膜还可以收集雨滴能量，作为雨天太阳能电池的有益补充。因此，具有优异光电性能的多功能3D图案化薄膜的引入，为太阳能电池的高效率和广泛应用提供了一种简单、低成本的技术策略和更有力的保障。通过降低灰尘与薄膜之间的范德华力，增强表面的疏水性，实现基于摩擦机制的静电除尘，可达到多效自洁效果。此外，在实现静电除尘的同时，图案化薄膜还可以收集雨滴能量，作为雨天太阳能电池的有益补充。因此，具有优异光电性能的多功能3D图案化薄膜的引入，为太阳能电池的高效率和广泛应用提供了一种简单、低成本的技术策略和更有力的保障。可达到多效自洁效果。此外，在实现静电除尘的同时，图案化薄膜还可以收集雨滴能量，作为雨天太阳能电池的有益补充。因此，具有优异光电性能的多功能3D图案化薄膜的引入，为太阳能电池的高效率和广泛应用提供了一种简单、低成本的技术策略和更有力的保障。可达到多效自洁效果。此外，在实现静电除尘的同时，图案化薄膜还可以收集雨滴能量，作为雨天太阳能电池的有益补充。因此，具有优异光电性能的多功能3D图案化薄膜的引入，为太阳能电池的高效率和广泛应用提供了一种简单、低成本的技术策略和更有力的保障。