Energy-saving quality road lighting with colloidal quantum dot nanophosphors
Here the first photometric study of road-lighting white light-emitting diodes (WLEDs) integrated with semiconductor colloidal quantum dots (QDs) is reported enabling higher luminance than conventional light sources, specifically in mesopic vision regimes essential to street lighting. Investigating o...
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doaj-7498497a2ee74e86987a7289c92ebbb22021-09-06T19:20:29ZengDe GruyterNanophotonics2192-86062192-86142014-12-013637338110.1515/nanoph-2014-0016Energy-saving quality road lighting with colloidal quantum dot nanophosphorsErdem Talha0Kelestemur Yusuf1Soran-Erdem Zeliha2Ji Yun3Demir Hilmi VolkanDepartment of Electrical and Electronics Engineering, Department of Physics, and UNAM–Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, TurkeyDepartment of Electrical and Electronics Engineering, Department of Physics, and UNAM–Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, TurkeyDepartment of Electrical and Electronics Engineering, Department of Physics, and UNAM–Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, TurkeySchool of Electrical and Electronic Engineering, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 639798, SingaporeHere the first photometric study of road-lighting white light-emitting diodes (WLEDs) integrated with semiconductor colloidal quantum dots (QDs) is reported enabling higher luminance than conventional light sources, specifically in mesopic vision regimes essential to street lighting. Investigating over 100 million designs uncovers that quality road-lighting QD-WLEDs, with a color quality scale and color rendering index ≥85, enables 13–35% higher mesopic luminance than the sources commonly used in street lighting. Furthermore, these QD-WLEDs were shown to be electrically more efficient than conventional sources with power conversion efficiencies ≥16–29%. Considering this fact, an experimental proof-of-concept QD-WLED was demonstrated, which is the first account of QD based color conversion custom designed for street lighting applications. The obtained white LED achieved the targeted mesopic luminance levels in accordance with the road lighting standards of the USA and the UK. These results indicate that road-lighting QD-WLEDs are strongly promising for energy-saving quality road lighting.https://doi.org/10.1515/nanoph-2014-0016quantum dots (qds)light-emitting diodes (leds)outdoor lightingmesopic visionphotometric design |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Erdem Talha Kelestemur Yusuf Soran-Erdem Zeliha Ji Yun Demir Hilmi Volkan |
spellingShingle |
Erdem Talha Kelestemur Yusuf Soran-Erdem Zeliha Ji Yun Demir Hilmi Volkan Energy-saving quality road lighting with colloidal quantum dot nanophosphors Nanophotonics quantum dots (qds) light-emitting diodes (leds) outdoor lighting mesopic vision photometric design |
author_facet |
Erdem Talha Kelestemur Yusuf Soran-Erdem Zeliha Ji Yun Demir Hilmi Volkan |
author_sort |
Erdem Talha |
title |
Energy-saving quality road lighting with colloidal quantum dot nanophosphors |
title_short |
Energy-saving quality road lighting with colloidal quantum dot nanophosphors |
title_full |
Energy-saving quality road lighting with colloidal quantum dot nanophosphors |
title_fullStr |
Energy-saving quality road lighting with colloidal quantum dot nanophosphors |
title_full_unstemmed |
Energy-saving quality road lighting with colloidal quantum dot nanophosphors |
title_sort |
energy-saving quality road lighting with colloidal quantum dot nanophosphors |
publisher |
De Gruyter |
series |
Nanophotonics |
issn |
2192-8606 2192-8614 |
publishDate |
2014-12-01 |
description |
Here the first photometric study of road-lighting white light-emitting diodes (WLEDs) integrated with semiconductor colloidal quantum dots (QDs) is reported enabling higher luminance than conventional light sources, specifically in mesopic vision regimes essential to street lighting. Investigating over 100 million designs uncovers that quality road-lighting QD-WLEDs, with a color quality scale and color rendering index ≥85, enables 13–35% higher mesopic luminance than the sources commonly used in street lighting. Furthermore, these QD-WLEDs were shown to be electrically more efficient than conventional sources with power conversion efficiencies ≥16–29%. Considering this fact, an experimental proof-of-concept QD-WLED was demonstrated, which is the first account of QD based color conversion custom designed for street lighting applications. The obtained white LED achieved the targeted mesopic luminance levels in accordance with the road lighting standards of the USA and the UK. These results indicate that road-lighting QD-WLEDs are strongly promising for energy-saving quality road lighting. |
topic |
quantum dots (qds) light-emitting diodes (leds) outdoor lighting mesopic vision photometric design |
url |
https://doi.org/10.1515/nanoph-2014-0016 |
work_keys_str_mv |
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