Fig. 3: Flexible PeLEDs based on flexible substrates and electrodes.
From: Flexible perovskite light-emitting diodes: recent progress, applications and challenges
a A PeLED fabricated on a flexible PDMS substrate when being lit and bent to a curvature radius of 3.5 mm (i), and normalized luminance and current efficiency (CE) measured after 5000 bending cycles with a curvature radius of 2.5 mm (ii). Reproduced with permission from ref. 56. Copyright 2021, John Wiley and Sons. b Schematic illustration of the stretch/release process of PI/AgNWs composite electrode attached on a pre-stretched VHB, and digital photo of the stretchable PeLEDs under different strains with and without bias. Reproduced with permission from ref. 59. Copyright 2017, John Wiley and Sons. c Digital photos of the flexible PeLEDs under different bending conditions. Reproduced with permission from ref. 60. Copyright 2017, Royal Society of Chemistry. d Thermal conductivities of different electrodes (i) and photograph of a large-area flexible PeLED with a size of 40 mm × 20 mm operating at 5 V (ii). Reproduced with permission from ref. 61. Copyright 2022, American Chemical Society. e Schematic drawings of exciton quenching by In and Sn atoms in ITO-PeLEDs (i), and efficient light emission in Gr-PeLEDs (ii). Reproduced with permission from ref. 62. Copyright 2017, John Wiley and Sons.
