Fig. 1: High-k and stretchable dielectric gel as the emitting layer matrix for bright ACEL devices. | Nature Communications

Fig. 1: High-k and stretchable dielectric gel as the emitting layer matrix for bright ACEL devices.

From: Ultra low-field-emission stretchable electroluminescent devices enabled by a transparent and high-κ dielectric gel

Fig. 1: High-k and stretchable dielectric gel as the emitting layer matrix for bright ACEL devices.

a Structure of stretchable APELSD. The digital photos are obtained by an APELSD excited at 2.5 V µm−1 with 1 kHz (scale bar, 5 cm). The CLSM image of the emitting layer, APEL, is also presented (scale bar, 60 µm). b The comparison of the different dielectrics in four dimensions for stretchable ACEL devices. c The dielectric constants of AVD compared to those of other stretchable materials. Data points represent mean ± SD (n  =  3). An image of transparent AVD is also inserted. d The stress-strain curve of the dielectric gel. Scale bar, 2 cm. e Dynamic viscosity of precursor liquid containing different contents of PVP. Data points represent mean ± SD (n  =  3). The inserted figure is the ZnS mixed precursor liquid after 20 min placement. Scale bar, 1 cm. f A comparison of the APELSD in this work with previously reported stretchable ACEL devices in terms of the operated electric fields and their corresponding luminance. The inserted digital photos are the APELSD and silicone-based device with 70 µm emitting layer in dark. Scale bar, 1 cm. The data points of this work represent mean ± SD (n  =  3).

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