Monolithic perovskite/silicon tandem solar cells have recently reached a certified record power conversion efficiency (PCE) of 34.6%. However, most of the high-efficiency tandems rely on spin coating to fabricate the perovskite absorber, which generally has limited scope for mass production. To address this, we demonstrate the potential of linear printing techniques, systematically improving 1.66 eV wide-band-gap (WBG) perovskites in single-junction perovskite solar cells (PSCs) via blade coating. Also, we enhance defect passivation and energy alignment between adjacent contacts, thus improving charge extraction in such blade-coated PSCs by introducing 2D/3D perovskite heterojunctions at their electron- and hole-collecting interfaces. Translating the 2D integrated blade-coated PSCs to our monolithic perovskite/silicon tandems significantly improved their performance, enabling an independently certified PCE of 31.2% for blade-coated tandems. Importantly, the encapsulated tandems retain 80% of their initial PCE for ∼1,700 h under ∼1-sun continuous illumination, demonstrating their durability and potential toward long-term deployment.

中文翻译：

---

通过界面工程实现高效的叶片涂层钙钛矿/硅串联


单片钙钛矿/硅叠层太阳能电池最近达到了创纪录的 34.6% 的功率转换效率 （PCE）。然而，大多数高效串联体依靠旋涂来制造钙钛矿吸收剂，这通常对大规模生产的空间有限。为了解决这个问题，我们展示了线性印刷技术的潜力，通过叶片涂层系统地改进了单结钙钛矿太阳能电池 （PSC） 中的 1.66 eV 宽带隙 （WBG） 钙钛矿。此外，我们增强了相邻触点之间的缺陷钝化和能量对齐，从而通过在电子和空穴收集界面引入 2D/3D 钙钛矿异质结来改善此类叶片涂层 PSC 中的电荷提取。将 2D 集成叶片涂层 PSC 转化为我们的单片钙钛矿/硅串联体，显著提高了它们的性能，使叶片涂层串联体的独立认证 PCE 达到 31.2%。重要的是，在 ∼1 太阳光连续照明下，封装的串联体可在 ∼1,700 小时内保留其 80% 的初始 PCE，证明了它们的耐用性和长期部署的潜力。