A photometric investigation of ultra-efficient LEDs with high color rendering index and high luminous efficacy employing nanocrystal quantum dot luminophores

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10.1364-OE.18.000340.pdf (492.29 KB)

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2009-12-24

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Abstract

We report a photometric study of ultra-efficient light emitting diodes (LEDs) that exhibit superior color rendering index (CRI) and luminous efficacy of optical radiation (LER) using semiconductor quantum dot nanocrystal (NC) luminophores. Over 200 million systematically varied NC-LED designs have been simulated to understand feasible performance in terms of CRI vs. LER. We evaluated the effects of design parameters including peak emission wavelength, full-width-at-half-maximum, and relative amplitudes of each NC color component on LED performance. Warm-white LEDs with CRI >90 and LER >380 lm/W at a correlated color temperature of 3000 K are shown to be achieved using nanocrystal luminophores. (C) 2009 Optical Society of America

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Optics Express

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Optical Society of America

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Keywords

Color, Nanocrystals, Photometry, Semiconductor Diodes, Semiconductor Quantum Dots Color Component, Color Rendering Index, Correlated Color Temperature, Design Parameters, High Color Rendering Index, High Luminous Efficacy, Luminophores, Luminous Efficacy, Optical Radiations, Peak Emission Wavelength, Quantum Dot, Relative Amplitude, White Led, Light Emitting Diodes, Nanomaterial, Quantum Dot, Article, Chemistry, Color, Colorimetry, Computer Aided Design, Equipment, Equipment Design, Illumination, Instrumentation, Luminescence, Methodology, Nanotechnology, Optical Instrumentation, Photometry, Refractometry, Reproducibility, Semiconductor, Sensitivity And Specificity, Color, Colorimetry, Computer-aided Design, Equipment Design, Equipment Failure Analysis, Lighting, Luminescent Measurements, Nanostructures, Nanotechnology, Optical Devices, Photometry, Quantum Dots, Refractometry, Reproducibility Of Results, Semiconductors, Sensitivity And Specificity

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http://hdl.handle.net/11693/11874

Published Version (Please cite this version)

http://dx.doi.org/10.1364/OE.18.000340

Collections

Scholarly Publications - Physics
Scholarly Publications - Electrical and Electronics Engineering
Scholarly Publications - UNAM

Language

English

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Article