论文标题
通过高速弹性消除钙钛矿太阳能电池制造瓶颈
Eliminating the Perovskite Solar Cell Manufacturing Bottleneck via High-Speed Flexography
论文作者
论文摘要
钙钛矿太阳能电池有可能通过低成本制造能够传递Terawatt规模的功率。然而，缩放受到无机运输层的缓慢，高温退火的限制，以及缺乏可靠的大面积方法来沉积薄（<30 nm）电荷传输层（CTL）。我们提出了一种通过将高速（60 m/min）的柔性印刷与快速退火的溶胶胶油与钙蛋白酶制造的最快的工艺相配对的方法来缩放超薄Niox孔传输层（HTL）。通过用于快速膜级别的工程前体流变学，Niox HTL具有高均匀性和超低针孔密度，从而导致光伏性能超过了自旋涂层设备。将这些印刷的传输层整合在平面倒置的PSC中，可以快速制造高效率（PCE> 15％）CS（X）FA（1-X）PBI太阳能电池，改善了22.4 MA/CM2的短路电流（JSC）。 HTL快速退火加速了总处理时间60倍，同时保持光电特性的所需平衡和有效孔收集的化学成分。这些结果增强了对超薄Niox的了解，并揭示了通过无机CTL的可扩展制造来增强设备性能的机会。
Perovskite solar cells have potential to deliver terawatt-scale power via low-cost manufacturing. However, scaling is limited by slow, high-temperature annealing of the inorganic transport layers and the lack of reliable, large-area methods for depositing thin (< 30 nm) charge transport layers (CTLs). We present a method for scaling ultrathin NiOx hole transport layers (HTLs) by pairing high-speed (60 m/min) flexographic printing with rapidly annealed sol-gel inks to achieve the fastest reported process for fabrication of inorganic CTLs for perovskites. By engineering precursor rheology for rapid film-leveling, NiOx HTLs were printed with high uniformity and ultralow pinhole densities resulting in photovoltaic performance exceeding that of spin-coated devices. Integrating these printed transport layers in planar inverted PSCs allows rapid fabrication of high efficiency (PCE > 15%) Cs(x)FA(1-x)PbI solar cells with improved short circuit currents (Jsc) of 22.4 mA/cm2. Rapid annealing of the HTL accelerates total processing time by 60X, while maintaining the required balance of optoelectronic properties and the chemical composition for effective hole collection. These results build an improved understanding of ultrathin NiOx and reveal opportunities to enhance device performance via scalable manufacturing of inorganic CTLs.
