In a flexible perovskite solar cell, the bottom interface between perovskite and the electron-transporting layer is critical in determining its efficiency and reliability. High defect concentrations and crystalline film fracturing at the bottom interface substantially reduce the efficiency and operational stability. In this work, a liquid crystal elastomer interlayer is intercalated into a flexible device with the charge transfer channel toughened by the aligned mesogenic assembly. The molecular ordering is instantly locked upon photopolymerization of liquid crystalline diacrylate monomers and dithiol-terminated oligomers. The optimized charge collection and the minimized charge recombination at the interface boost the efficiency up to 23.26% and 22.10% for rigid and flexible devices, respectively. The liquid crystal elastomer-induced suppression of phase segregation endows the unencapsulated device maintaining >80% of the initial efficiency for 1570 h. Moreover, the aligned elastomer interlayer preserves the configuration integrity with remarkable repeatability and mechanical robustness, which enables the flexible device to retain 86% of its original efficiency after 5000 bending cycles. The flexible solar cell chips are further integrated into a wearable haptic device with microneedle-based arrays of sensors to demonstrate a pain sensation system in virtual reality.

在柔性钙钛矿太阳能电池中，钙钛矿和电子传输层之间的底部界面对于决定其效率和可靠性至关重要。底部界面处的高缺陷浓度和结晶膜破裂大大降低了效率和操作稳定性。在这项工作中，液晶弹性体夹层被插入柔性器件中，电荷传输通道由对齐的介晶组件增韧。分子排序立即锁定在液晶二丙烯酸酯单体和二硫醇封端的低聚物的光聚合上。优化的电荷收集和最小化的界面电荷复合将刚性和柔性器件的效率分别提高了 23.26% 和 22.10%。液晶弹性体诱导的相分离抑制使未封装的器件在 1570 小时内保持 >80% 的初始效率。此外，对齐的弹性体夹层保持了配置的完整性，具有出色的可重复性和机械鲁棒性，这使柔性设备在 5000 次弯曲循环后仍能保持其原始效率的 86%。柔性太阳能电池芯片进一步集成到带有基于微针的传感器阵列的可穿戴触觉设备中，以在虚拟现实中演示痛觉系统。这使得柔性设备在 5000 次弯曲循环后仍能保持其原始效率的 86%。柔性太阳能电池芯片进一步集成到带有基于微针的传感器阵列的可穿戴触觉设备中，以在虚拟现实中演示痛觉系统。这使得柔性设备在 5000 次弯曲循环后仍能保持其原始效率的 86%。柔性太阳能电池芯片进一步集成到带有基于微针的传感器阵列的可穿戴触觉设备中，以在虚拟现实中演示痛觉系统。