Combustion Synthesized Zinc Oxide Electron-Transport Layers for Efficient and Stable Perovskite Solar Cells
Combustion Synthesized Zinc Oxide Electron-Transport Layers for Efficient and Stable Perovskite Solar Cells
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DOI：
10.1002/adfm.201900265
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发表时间：
2019-04-18
影响因子：
19
通讯作者：
Facchetti, Antonio
中科院分区：
文献类型：
--
作者：
Zheng, Ding;Wang, Gang;Facchetti, Antonio
永磁太阳能电池（PSC）发展迅速，功率转换效率（PCE）现已超过22%。由于光活性层中电荷载流子的长扩散长度，包含电子传输层（ETL）的PSC器件架构对于优化电荷流动和收集以获得最大性能是必不可少的。在这里，一种新的方法，报告了低温，溶液处理的氧化锌ETL的PSC使用燃烧合成。由于固有的钝化效应、高结晶度、匹配的能级、理想的表面形貌以及与钙钛矿层的良好化学相容性，这种燃烧衍生的ZnO使得三种类型的钙钛矿材料系统的PCE接近17-20%，而不需要ETL掺杂或表面官能化。
Perovskite solar cells (PSCs) have advanced rapidly with power conversion efficiencies (PCEs) now exceeding 22%. Due to the long diffusion lengths of charge carriers in the photoactive layer, a PSC device architecture comprising an electron-transporting layer (ETL) is essential to optimize charge flow and collection for maximum performance. Here, a novel approach is reported to low temperature, solution-processed ZnO ETLs for PSCs using combustion synthesis. Due to the intrinsic passivation effects, high crystallinity, matched energy levels, ideal surface topography, and good chemical compatibility with the perovskite layer, this combustion-derived ZnO enables PCEs approaching 17-20% for three types of perovskite materials systems with no need for ETL doping or surface functionalization.