Layered polymer-perovskite composite membranes for ultraflexible fatigue-tolerant optoelectronics

Yalu Li, Can Zou, Da Liu, Qing Li, Yan Zhu, Miaoyu Lin, Sihan Zeng, Zhanpeng Wei, Xinyi Liu, Yichu Zheng, Yu Peng, Yu Hou (), Hua Gui Yang () and Shuang Yang ()
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Yalu Li: East China University of Science and Technology
Can Zou: East China University of Science and Technology
Da Liu: East China University of Science and Technology
Qing Li: East China University of Science and Technology
Yan Zhu: East China University of Science and Technology
Miaoyu Lin: East China University of Science and Technology
Sihan Zeng: East China University of Science and Technology
Zhanpeng Wei: East China University of Science and Technology
Xinyi Liu: East China University of Science and Technology
Yichu Zheng: Shanghai University
Yu Peng: East China University of Science and Technology
Yu Hou: East China University of Science and Technology
Hua Gui Yang: East China University of Science and Technology
Shuang Yang: East China University of Science and Technology

Nature Communications, 2025, vol. 16, issue 1, 1-12

Abstract: Abstract Flexible integration of perovskite materials has driven diverse applications, from wearable detectors, portable energy systems to foldable displays. However, due to the intrinsic brittleness of perovskite, mechanical strain inevitably causes the degradation and variation of electronic performance of the devices. Here, we establish a periodic multilayered polymer-perovskite membrane that showcases plastic-like mechanical behaviors of small Young’s modulus (5.41 GPa) and bending tolerance (radius of 0.5 mm), yet retains the perovskite’s carrier transport capacity (μτ product of 1.04 × 10−4 cm2 V−1). The mechanistic study shows that the formation of bicontinuous perovskite-polyimide structure in the membrane accounts for the carrier transport and load transfer functions, respectively, thus unifies paradoxical mechanical and electronic properties. Using a lateral device configuration, X-ray detector based on the membrane delivers a high X-ray sensitivity of 8380.80 μC Gyair−1 cm−2, and withstands 30,000 repeated bending cycles under a bending radius of 1.5 mm without notable performance degradation.

Date: 2025
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DOI: 10.1038/s41467-025-60705-5

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