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나노입자 연구단
나노입자 연구단
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Ultrathin Quantum Dot Display Integrated with Wearable Electronics

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Title
Ultrathin Quantum Dot Display Integrated with Wearable Electronics
Author(s)
Jaemin Kim; Hyung Joon Shim; Jiwoong Yang; Moon Kee Choi; Dong Chan Kim; Junhee Kim; Taeghwan Hyeon; Dae-Hyeong Kim
Publication Date
2017-10
Journal
ADVANCED MATERIALS, v.29, no.38, pp.1700217 -
Publisher
WILEY-V C H VERLAG GMBH
Abstract
An ultrathin skin-attachable display is a critical component for an information output port in next-generation wearable electronics. In this regard, quantum dot (QD) light-emitting diodes (QLEDs) offer unique and attractive characteristics for future displays, including high color purity with narrow bandwidths, high electroluminescence (EL) brightness at low operating voltages, and easy processability. Here, ultrathin QLED displays that utilize a passive matrix to address individual pixels are reported. The ultrathin thickness (≈5.5 μm) of the QLED display enables its conformal contact with the wearer’s skin and prevents its failure under vigorous mechanical deformation. QDs with relatively thick shells are employed to improve EL characteristics (brightness up to 44 719 cd m−2 at 9 V, which is the record highest among wearable LEDs reported to date) by suppressing the nonradiative recombination. Various patterns, including letters, numbers, and symbols can be successfully visualized on the skin-mounted QLED display. Furthermore, the combination of the ultrathin QLED display with flexible driving circuits and wearable sensors results in a fully integrated QLED display that can directly show sensor data. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
URI
https://pr.ibs.re.kr/handle/8788114/4354
ISSN
0935-9648
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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