Device performance and light characteristics stability of quantum-dot-based white-light-emitting diodes
comunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
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https://doi.org/10.1007/s1227 |
Metadades
Títol
Device performance and light characteristics stability of quantum-dot-based white-light-emitting diodesData de publicació
2017Editor
Springer VerlagISSN
1998-0124; 1998-0000Cita bibliogràfica
Hames, B.C., Mora-Seró, I. & Sánchez, R.S. Nano Res. (2017). https://doi.org/10.1007/s12274-017-1773-2Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
https://link.springer.com/article/10.1007/s12274-017-1773-2#aboutcontentVersió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
Advances in image quality in recent decades have made it necessary to develop
new technologies for producing displays to meet remarkably stricter standards.
The display market is governed mainly by liquid crystal ... [+]
Advances in image quality in recent decades have made it necessary to develop
new technologies for producing displays to meet remarkably stricter standards.
The display market is governed mainly by liquid crystal display and lightemitting
diode (LED) technology; however, it suffers from limitations that can
be overcome by developing the next generation of electroluminescent displays.
The introduction of colloidal quantum dots (QDs) as down-converters has
enabled the production of displays with extremely high color purity and gamut.
Therefore, colloidal nanocrystals are excellent candidates for the preparation of
electroluminescent devices, which represent a straightforward approach to the
development of unprecedented high-quality displays. We synthesized light-emitting
QDs covering the entire visible spectrum with high fluorescence quantum
yields and color purity, and produced high-brightness single-color LEDs with
external quantum efficiencies of 0.39%, 1.04%, 2.10%, and 1.30% for red-, orange-,
green-, and blue-emitting dots, respectively. Additionally, white LEDs were
prepared by mixing QDs; they showed color temperatures of 5,300 K and color
rendering indices exceeding 80%. Very importantly, we exhaustively characterized
the LED performance, including the response time, stability, and evolution of
the light characteristics, thus providing crucial information toward the development
of high-quality electroluminescent displays. [-]
Publicat a
Nano Res. (2017)Proyecto de investigación
MAT2016-76892-C3-1-R ; PROMETEOII/2014/020Drets d'accés
© Tsinghua University Press and Springer-Verlag GmbH Germany 2017
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