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首页> 外文期刊>ACS applied materials & interfaces >Ambient Engineering for High-Performance Organic Inorganic Perovskite Hybrid Solar Cells
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Ambient Engineering for High-Performance Organic Inorganic Perovskite Hybrid Solar Cells

机译：高性能有机无机钙钛矿混合太阳能电池的环境工程

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Considering the evaporation of solvents during fabrication of perovskite films, the organic ambience will present a significant influence on the morphologies and properties of perovskite films. To clarify this issue, various ambiences of N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and chlorobenzene (CBZ) are introduced during fabrication of perovskite films by two-step sequential deposition method. The results reveal that an ambient CBZ atmosphere is favorable to control the nucleation and growth of CH3NH3PbI3 grains while the others present a negative effect. The statistical results show that the average efficiencies of perovskite solar cells processed in an ambient CBZ atmosphere can be significantly improved by a relatively average value of 35%, compared with those processed under The efficiency of the best perovskite solar cells can be improved from 10.65% to 14.55% by introducing this ambience engineering technology. The CH3NH3PbI3 film with large-size grains produced in an ambient CBZ atmosphere can effectively reduce the density of grain boundaries, and then the recombination centers for photoinduced carriers. Therefore, a higher short-circuit current density is achieved, which makes main contribution to the improvement in efficiency. These results provide vital progress toward understanding the role of ambience in the realization of highly efficient perovskite solar cells.
机译：考虑到钙钛矿薄膜制造过程中溶剂的蒸发，有机气氛将对钙钛矿薄膜的形态和性能产生重大影响。为了澄清这个问题，在通过两步顺序沉积法制造钙钛矿薄膜的过程中，引入了N，N-二甲基甲酰胺（DMF），二甲基亚砜（DMSO）和氯苯（CBZ）的各种环境。结果表明，CBZ气氛对控制CH3NH3PbI3晶粒的形核和生长是有利的，而其他的则具有负面影响。统计结果表明，与采用CBZ气氛处理的钙钛矿太阳能电池相比，与之相比，平均钙钛矿型太阳能电池的平均效率可提高35％的相对平均值。最佳钙钛矿太阳能电池的效率可从10.65％提升。通过引入这种环境工程技术达到14.55％。在CBZ气氛中产生的具有大尺寸晶粒的CH3NH3PbI3薄膜可以有效降低晶界密度，进而降低光致载流子的复合中心。因此，获得了更高的短路电流密度，这对效率的提高做出了主要贡献。这些结果为理解环境在实现高效钙钛矿太阳能电池中的作用提供了重要的进展。

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