Tunable Carbon–CsPbI3 Quantum Dots for White LEDs
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Altres documents de l'autoria: Rafat Rafiei, Rafat; Gualdrón Reyes, Andrés Fabián; Masi, Sofia; Azizollah Ganji, Bahram; Taghavinia, Nima; Gené Marimon, Santi; Palomares, Emilio; Mora-Sero, Ivan
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comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
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INVESTIGACIONMetadades
Títol
Tunable Carbon–CsPbI3 Quantum Dots for White LEDsAutoria
Data de publicació
2020-12-06Editor
WileyISSN
2195-1071Cita bibliogràfica
Rad, R. R., Gualdrón‐Reyes, A. F., Masi, S., Ganji, B. A., Taghavinia, N., Gené‐Marimon, S., Palomares, E., Mora‐Seró, I., Tunable Carbon–CsPbI3 Quantum Dots for White LEDs. Adv. Optical Mater. 2020, 2001508. https://doi.org/10.1002/adom.202001508Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
https://onlinelibrary.wiley.com/doi/10.1002/adom.202001508Versió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
In this work, a simple method to prepare white light emissive diodes based on quantum dot (QD) colloidal solutions using mixed carbon QDs (CQDs) and CsPbI3 perovskite (PQDs) is reported. The right combination generates ... [+]
In this work, a simple method to prepare white light emissive diodes based on quantum dot (QD) colloidal solutions using mixed carbon QDs (CQDs) and CsPbI3 perovskite (PQDs) is reported. The right combination generates emission across the entire visible spectrum upon ultraviolet excitation. The white light emission of the final films provides high and stable color rendering index of 92%, tuning the chromaticity coordinates of the emission through the applied voltage. By varying the CsPbI3 QD concentration, a mixture is obtained that emits the “warm”, “neutral”, and “cold” white light sought for many indoor lighting applications, or to approximate the visible region of the solar spectrum, respectively. Remarkably, the material syntheses are low cost and truly scalable. In addition, colloidal mixtures of CQDs and CsPbI3 PQDs show a facile deposition for light‐emitting diode (LED) application, showing white electroluminescence, indicating that both kinds of QDs are stable during LED operation. Last but not least, the photoluminescence quantum yield of the colloidal mixtures is higher (up to 75%) than single white emitters, showing itself as a promising system for white emission with tunable properties. [-]
Publicat a
Advanced Optical Materials, 2020Proyecto de investigación
Ministry of Science, Research and Technology of Iran; European Research Council. Grant Number: 724424–No‐LIMIT; Generalitat Valenciana. Grant Number: Prometeo/2018/098; ICIQ; ICREA; MINECO. Grant Number: CTQ‐2017‐89814‐PDrets d'accés
info:eu-repo/semantics/openAccess
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