Quantum dot LEDs meet wearable devices
developed an ultra-thin wearable quantum dot light emitting diodes (QLEDs). The electronic tattoo is based on current quantum dot light emitting diode (QLED) technology (Nature Communications, "Wearable red–green–blue quantum dot light-emitting diode array using high-resolution intaglio transfer printing"). Colloidal quantum dot (QLED's) have attracted great attention as next generation displays. The quantum dots (QDs) have unique properties such as the color tunability, photo/air stability, and are printability on various substrates. The device is paper thin and can be applied to human skin like a sticker.