Fig. 1: Stretchable OLEDs utilizing a pop-up assisting adhesive blocking layer (PA-ABL). | Nature Communications

Fig. 1: Stretchable OLEDs utilizing a pop-up assisting adhesive blocking layer (PA-ABL).

From: 3D height-alternant island arrays for stretchable OLEDs with high active area ratio and maximum strain

Fig. 1

a Conceptual illustration of the assembly strategy with PA-ABL and an OLED device on an elastomeric substrate. The adhesive layer is formed on the elastomeric substrate prior to symmetric biaxial pre-stretching (\(\varDelta x=\varDelta y\)). b The configuration image of stretchable OLEDs after biaxial strain release. The inset shows the scanning electron microscope (SEM) image of a fabricated stretchable OLED. c The schematic image of a unit OLED device in a pop-up state. d The role of PA-ABL in both 2D planar and 3D pop-up states. The proposed device is triggered by the biaxial strain release, resulting in a transition to a 3D pop-up state. The PA-ABL prevents an OLED from being lifted from facing the adhesive layer directly while significantly reducing attractive interactions between the OLED and the PA-ABL via decreased contact area resulting from its dimpled surface morphology. e The cross-sectional SEM image of the OLED device.

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