Intrinsically stretchable three primary light-emitting films for e-skin display

Stretchable light-emitting materials that can mimic skin are key for wearable displays that feel natural, but until now, they could mainly produce a greenish-yellow light due to limitations in the materials available, particularly those in the super yellow series. To create wearable displays that can show the full spectrum of colors, it is vital to have materials that can emit red, green, and blue (RGB) light and are also stretchable. In my presentation, I will discuss a novel method for creating highly stretchable light-emitting films. This method involves mixing traditional RGB light-emitting polymers with a nonpolar elastomer to form blend films. These films are made up of light-emitting polymer nanodomains interconnected within an elastomer matrix, enabling efficient light emission when stretched. The RGB blend films we developed show a brightness of over 1000 cd/m2, require a low activation voltage (less than 5 Von), and can maintain consistent light emission up to a 100% strain, even after being stretched and released 1000 times.