Extremely Vivid, Highly Transparent, and Ultrathin Quantum Dot Light-Emitting Diodes Highly Cited Paper

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Title
Extremely Vivid, Highly Transparent, and Ultrathin Quantum Dot Light-Emitting Diodes
Author(s)
Moon Kee Choi; Jiwoong Yang; Dong Chan Kim; Zhaohe Dai; Junhee Kim; Hyojin Seung; Vinayak S. Kale; Sae Jin Sung; Chong Rae Park; Nanshu Lu; Taeghwan Hyeon; Dae-Hyeong Kim
Publication Date
2018-01
Journal
ADVANCED MATERIALS, v.30, no.1, pp. -
Publisher
WILEY-V C H VERLAG GMBH
Abstract
Displaying information on transparent screens offers new opportunities in next-generation electronics, such as augmented reality devices, smart surgical glasses, and smart windows. Outstanding luminance and transparency are essential for such “see-through” displays to show vivid images over clear background view. Here transparent quantum dot light-emitting diodes (Tr-QLEDs) are reported with high brightness (bottom: ≈43 000 cd m−2, top: ≈30 000 cd m−2, total: ≈73 000 cd m−2 at 9 V), excellent transmittance (90% at 550 nm, 84% over visible range), and an ultrathin form factor (≈2.7 µm thickness). These superb characteristics are accomplished by novel electron transport layers (ETLs) and engineered quantum dots (QDs). The ETLs, ZnO nanoparticle assemblies with ultrathin alumina overlayers, dramatically enhance durability of active layers, and balance electron/hole injection into QDs, which prevents nonradiative recombination processes. In addition, the QD structure is further optimized to fully exploit the device architecture. The ultrathin nature of Tr-QLEDs allows their conformal integration on various shaped objects. Finally, the high resolution patterning of red, green, and blue Tr-QLEDs (513 pixels in.−1) shows the potential of the full-color transparent display. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinhei
URI
https://pr.ibs.re.kr/handle/8788114/4704
ISSN
0935-9648
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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