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Yellow fluorescent graphene quantum dots as a phosphor for white tunable light-emitting diodes
In recent decades, quantum dots have been considered to be highly promising photoluminescent materials for white light devices. During the application of quantum dots in the fabrication of white LEDs, the spectrum and color temperature of the devices are modulated; these devices often involve quantu...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9061975/ https://www.ncbi.nlm.nih.gov/pubmed/35517710 http://dx.doi.org/10.1039/c8ra10353d |
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author | Yin, Luqiao Zhou, Jipeng Li, Weitao Zhang, Jianhua Wang, Liang |
author_facet | Yin, Luqiao Zhou, Jipeng Li, Weitao Zhang, Jianhua Wang, Liang |
author_sort | Yin, Luqiao |
collection | PubMed |
description | In recent decades, quantum dots have been considered to be highly promising photoluminescent materials for white light devices. During the application of quantum dots in the fabrication of white LEDs, the spectrum and color temperature of the devices are modulated; these devices often involve quantum dots with different emission wavelengths. In this study, yellow-green emitting graphene quantum dots (GQDs) were fabricated using a simple, low-cost and eco-friendly method. The obtained GQDs were cast in UV-curable siloxane. Then, a polymer film with superior optical transparency and excellent monodisperse properties of GQDs was formed. Via the simple adjustment of thickness and the GQD concentration of the color convert matrix, tunable color temperatures (3196–10 870 K) of the GQD-based white light-emitting diodes (LEDs) were achieved. The CIE (Commission Internationale de L'Eclairage) coordinates of the GQD-based white light-emitting diodes matched well with the blackbody radiation curve. Using the fluorescent polymeric matrix in white LEDs, good quality emission and gratifying stability could be obtained. Moreover, this indicates that this technology has the potential for applications in high-end lighting. |
format | Online Article Text |
id | pubmed-9061975 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90619752022-05-04 Yellow fluorescent graphene quantum dots as a phosphor for white tunable light-emitting diodes Yin, Luqiao Zhou, Jipeng Li, Weitao Zhang, Jianhua Wang, Liang RSC Adv Chemistry In recent decades, quantum dots have been considered to be highly promising photoluminescent materials for white light devices. During the application of quantum dots in the fabrication of white LEDs, the spectrum and color temperature of the devices are modulated; these devices often involve quantum dots with different emission wavelengths. In this study, yellow-green emitting graphene quantum dots (GQDs) were fabricated using a simple, low-cost and eco-friendly method. The obtained GQDs were cast in UV-curable siloxane. Then, a polymer film with superior optical transparency and excellent monodisperse properties of GQDs was formed. Via the simple adjustment of thickness and the GQD concentration of the color convert matrix, tunable color temperatures (3196–10 870 K) of the GQD-based white light-emitting diodes (LEDs) were achieved. The CIE (Commission Internationale de L'Eclairage) coordinates of the GQD-based white light-emitting diodes matched well with the blackbody radiation curve. Using the fluorescent polymeric matrix in white LEDs, good quality emission and gratifying stability could be obtained. Moreover, this indicates that this technology has the potential for applications in high-end lighting. The Royal Society of Chemistry 2019-03-21 /pmc/articles/PMC9061975/ /pubmed/35517710 http://dx.doi.org/10.1039/c8ra10353d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Yin, Luqiao Zhou, Jipeng Li, Weitao Zhang, Jianhua Wang, Liang Yellow fluorescent graphene quantum dots as a phosphor for white tunable light-emitting diodes |
title | Yellow fluorescent graphene quantum dots as a phosphor for white tunable light-emitting diodes |
title_full | Yellow fluorescent graphene quantum dots as a phosphor for white tunable light-emitting diodes |
title_fullStr | Yellow fluorescent graphene quantum dots as a phosphor for white tunable light-emitting diodes |
title_full_unstemmed | Yellow fluorescent graphene quantum dots as a phosphor for white tunable light-emitting diodes |
title_short | Yellow fluorescent graphene quantum dots as a phosphor for white tunable light-emitting diodes |
title_sort | yellow fluorescent graphene quantum dots as a phosphor for white tunable light-emitting diodes |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9061975/ https://www.ncbi.nlm.nih.gov/pubmed/35517710 http://dx.doi.org/10.1039/c8ra10353d |
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