Yang X.Mutlugun, E.Dang, C.Dev, K.Gao, Y.Tan, S.T.Sun X.W.Demir, Hilmi Volkan2016-02-082016-02-08201419360851http://hdl.handle.net/11693/26525Flexible information displays are key elements in future optoelectronic devices. Quantum dot light-emitting diodes (QLEDs) with advantages in color quality, stability, and cost-effectiveness are emerging as a candidate for single-material, full color light sources. Despite the recent advances in QLED technology, making high-performance flexible QLEDs still remains a big challenge due to limited choices of proper materials and device architectures as well as poor mechanical stability. Here, we show highly efficient, large-area QLED tapes emitting in red, green, and blue (RGB) colors with top-emitting design and polyimide tapes as flexible substrates. The brightness and quantum efficiency are 20 000 cd/m2 and 4.03%, respectively, the highest values reported for flexible QLEDs. Besides the excellent electroluminescence performance, these QLED films are highly flexible and mechanically robust to use as electrically driven light-emitting stickers by placing on or removing from any curved surface, facilitating versatile LED applications. Our QLED tapes present a step toward practical quantum dot based platforms for high-performance flexible displays and solid-state lighting. © 2014 American Chemical Society.Englishelectroluminescenceflexibilitylight-emitting diodespolyimide tapequantum dotColorElectroluminescenceFlexible displaysLight sourcesOptoelectronic devicesPolyimidesSemiconductor quantum dotsCurved surfacesDevice architecturesflexibilityFlexible substrateInformation displayMechanically robustquantum dotSolid state lightingLight emitting diodesArticle10.1021/nn502588k