Wearable red–green–blue quantum dot light-emitting diode array using high-resolution intaglio transfer printing

Deformable and high-resolution LEDs have attracted great interest for wearable electronics, but full-colour display is still challenging. Using a stamp printing technology, Choi et al. build ultra-thin RGB quantum dot pixel arrays with luminous efficiency of 14,000 cd m−2 operated at low voltage of 7 V.