Device performance and light characteristics stability of quantum-dot-based white-light-emitting diodes
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comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
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https://doi.org/10.1007/s1227 |
Metadatos
Título
Device performance and light characteristics stability of quantum-dot-based white-light-emitting diodesFecha de publicación
2017Editor
Springer VerlagISSN
1998-0124; 1998-0000Cita bibliográfica
Hames, B.C., Mora-Seró, I. & Sánchez, R.S. Nano Res. (2017). https://doi.org/10.1007/s12274-017-1773-2Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://link.springer.com/article/10.1007/s12274-017-1773-2#aboutcontentVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
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. [-]
Publicado en
Nano Res. (2017)Proyecto de investigación
MAT2016-76892-C3-1-R ; PROMETEOII/2014/020Derechos de acceso
© Tsinghua University Press and Springer-Verlag GmbH Germany 2017
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