Fig. 4: Flexible and stretchable PeACEL devices operating at 100 V, 20 kHz.
From: Multicolour stretchable perovskite electroluminescent devices for user-interactive displays
a, Schematic of the stretchable PeACEL device, which comprises PeZS phosphors embedded in SEBS as the EML and AgNW networks encased within SEBS as the electrodes. b, EL images of the activated PeACEL devices being subjected to various levels of strain. Scale bar, 1.5 cm. c, Dependence of the luminance of PeACEL devices on strains. Ten devices were used in the test, with each device being tested twice. Squares, mean; box limits, upper and lower quartiles; whiskers, 1.5× interquartile range; points, outliers; n = 20 independent spots. d, Mechanical stability test of the PeACEL device for 500 cycles. The inset shows the relative intensity under the relaxed and stretched states with 100% strain for the initial 20 cycles. e, Cross-sectional view of the device. Scale bar, 30 μm. f, EL images of the patterned PeACEL devices at the initial (top) and bent (bottom) states. Scale bar, 1 cm. L0 represents the initial luminance without any strain, LR stands for the luminance when the device is relaxed during stretching cycles and L denotes the luminance at 100% strain and on returning to the relaxed state.
