Highly flexible, electrically driven, top-emitting, quantum dot light-emitting stickers
Date
2014Source Title
ACS Nano
Print ISSN
19360851
Publisher
American Chemical Society
Volume
8
Issue
8
Pages
8224 - 8231
Language
English
Type
ArticleItem Usage Stats
231
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views
646
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downloads
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/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.
Keywords
electroluminescenceflexibility
light-emitting diodes
polyimide tape
quantum dot
Color
Electroluminescence
Flexible displays
Light sources
Optoelectronic devices
Polyimides
Semiconductor quantum dots
Curved surfaces
Device architectures
flexibility
Flexible substrate
Information display
Mechanically robust
quantum dot
Solid state lighting
Light emitting diodes
Permalink
http://hdl.handle.net/11693/26525Published Version (Please cite this version)
http://dx.doi.org/10.1021/nn502588kCollections
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