title: Highly flexible, electrically driven, top-emitting, quantum dot light-emitting stickers.
abstract: Flexible 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/m(2) 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.
authors.affiliation: LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, and ‡School of Physical and Mathematical Sciences, Nanyang Technological University , Nanyang Avenue, Singapore 639798.
authors.forename: Xuyong
authors.initials: X
authors.lastname: Yang
authors.forename: Evren
authors.initials: E
authors.lastname: Mutlugun
authors.forename: Cuong
authors.initials: C
authors.lastname: Dang
authors.forename: Kapil
authors.initials: K
authors.lastname: Dev
authors.forename: Yuan
authors.initials: Y
authors.lastname: Gao
authors.forename: Swee Tiam
authors.initials: ST
authors.lastname: Tan
authors.forename: Xiao Wei
authors.initials: XW
authors.lastname: Sun
authors.forename: Hilmi Volkan
authors.initials: HV
authors.lastname: Demir