Waterproof Flexible InP@ZnSeS Quantum Dot Light-Emitting Diode
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Authors
Suh, YH
Lee, S
Han, SD
Fan, Xiangbing
Zhan, S
Yang, J
Jung, S
Mocanu, FC
Lee, H
Kim, JM
Publication Date
2020-03-01Journal Title
Advanced Optical Materials
ISSN
2195-1071
Volume
8
Issue
6
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Shin, D., Suh, Y., Lee, S., Hou, B., Han, S., Cho, Y., Fan, X., et al. (2020). Waterproof Flexible InP@ZnSeS Quantum Dot Light-Emitting Diode. Advanced Optical Materials, 8 (6)https://doi.org/10.1002/adom.201901362
Abstract
The development of flexible displays for wearable electronics applications has created
demand for high-performance quantum dot (QD) light-emitting diodes (QLEDs) based on QD
core@shell structures. Emerging indium phosphide (InP)-based core@shell QDs show
promise as lighting material in the field of optoelectronics because they are environmentally
friendly material, can be produced in a cost-effective manner, and are capable of tunable
emission. While efforts have been made to enhance the performance of InP-based QLED, the
stabilities of InP@ZnSeS QDs film and InP@ZnSeS-based QLED in water/air are not yet
fully understood, limiting their practical applications. Herein, a highly durable, flexible
InP@ZnSeS QLED encapsulated in an ultrathin film of CYTOP, a solution-based amorphous
fluoropolymer, is demonstrated. The CYTOP-encapsulated green flexible QLED shows an
external quantum efficiency (EQE) of 0.904% and a high luminescence of 1593 cd/m2
as
well as outstanding waterproof performance. The flexible device emits strong luminescence
after being immersed in water for ~20 minutes. Even when subjected to continuous tensile
stress with a 5 mm bending radius, the high luminescence is preserved. This waterproof
architecture can be a promising strategy for wearable electronics applications.
Sponsorship
EPSRC (EP/P027628/1)
European Commission Horizon 2020 (H2020) Research Infrastructures (RI) (685758)
Identifiers
External DOI: https://doi.org/10.1002/adom.201901362
This record's URL: https://www.repository.cam.ac.uk/handle/1810/301416
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