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      • Department of Electrical and Electronics Engineering
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      Highly flexible, electrically driven, top-emitting, quantum dot light-emitting stickers

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      Author(s)
      Yang X.
      Mutlugun, E.
      Dang, C.
      Dev, K.
      Gao, Y.
      Tan, S.T.
      Sun X.W.
      Demir, Hilmi Volkan
      Date
      2014
      Source Title
      ACS Nano
      Print ISSN
      19360851
      Publisher
      American Chemical Society
      Volume
      8
      Issue
      8
      Pages
      8224 - 8231
      Language
      English
      Type
      Article
      Item Usage Stats
      231
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      646
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      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
      electroluminescence
      flexibility
      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/11693/26525
      Published Version (Please cite this version)
      http://dx.doi.org/10.1021/nn502588k
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      • Department of Electrical and Electronics Engineering 4011
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