近日，华中科技大学王磊团队报道了高效全蒸发钙钛矿发光二极管的有机插层策略。相关论文于2026年3月31日发表在《自然—光子学》杂志上。
通过热蒸发制备的钙钛矿发光二极管（PeLEDs）因其与现有显示面板生产线兼容，非常适合大规模工业化生产。然而，全蒸发PeLEDs的性能落后于溶液法加工的同类器件，主要原因是蒸发钙钛矿薄膜中的缺陷密度较高。
研究组发展了一种顺序沉积结合有机插层（SDOI）策略，通过将多功能有机分子盐酸苯乙双胍（PFCl）引入钙钛矿结晶过程，制备出高质量的钙钛矿薄膜。PFCl的插层有效阻止了Cs与Pb前驱体之间的直接接触，从而促进了具有高度均匀晶体学取向的低维钙钛矿薄膜的形成。此外，PFCl还能有效钝化多种类型的缺陷，同时扮演有机间隔阳离子和钝化剂的双重角色。
基于此，研究组制备了基于SDOI策略的天蓝色PeLEDs，其外量子效率达到20.12%，最大亮度为23,704 cd m-2。他们还将SDOI策略应用于高性能绿色PeLEDs的制备，验证了该方法的普适性。进一步地，研究组将基于SDOI策略的全蒸发PeLEDs集成到薄膜晶体管驱动的有源矩阵显示面板中，展示了该策略在显示应用中的潜力。该SDOI策略为高效全蒸发PeLEDs及其实际应用规模化铺平了道路。
附：英文原文
Title: Organic intercalation strategy for efficient all-evaporated perovskite light-emitting diodes
Author: Peng, Chencheng, He, Zhiyuan, Zhang, Feihu, Wang, Nana, Xu, Shuang, Chen, Ben, He, Xiping, Chen, Jingdong, Zhu, Wei, Guo, Runda, Wang, Jianpu, Wang, Lei
Issue&Volume: 2026-03-31
Abstract: Perovskite light-emitting diodes (PeLEDs) fabricated through thermal evaporation are well suited for large-scale industrial production, owing to their compatibility with existing display panel manufacturing lines. However, the performance of all-evaporated PeLEDs lags behind that of their solution-processed counterparts, primarily due to the high defect density in evaporated perovskite films. Here we develop a sequential deposition combined with organic intercalation (SDOI) strategy to fabricate high-quality perovskite films by incorporating the multifunctional organic molecule phenformin hydrochloride (PFCl) into the perovskite crystallization process. The PFCl intercalation effectively prevents direct contact between the Cs and Pb precursors, thereby boosting the formation of reduced-dimensional perovskite films with highly uniform crystallographic orientation. Moreover, PFCl effectively passivates various types of defect, serving a dual role as both an organic spacer cation and a passivating agent. As a result, we demonstrate SDOI-based sky-blue PeLEDs with an external quantum efficiency of 20.12% and a maximum luminance of 23,704cdm2. We also apply the SDOI strategy for the fabrication of high-performance green PeLEDs, demonstrating the method’s generality. Moreover, we integrate the SDOI-based all-evaporated PeLEDs into thin-film transistor-driven active-matrix display panels, demonstrating the potential of the SDOI strategy for display applications. Our SDOI strategy paves the way for efficient all-evaporated PeLEDs and their scaling up for practical applications.
DOI: 10.1038/s41566-026-01887-2
Source: https://www.nature.com/articles/s41566-026-01887-2