A photometric investigation of ultra-efficient LEDs with high color rendering index and high luminous efficacy employing nanocrystal quantum dot luminophores
Date
2009-12-24
Advisor
Instructor
Source Title
Optics Express
Print ISSN
1094-4087
Electronic ISSN
Publisher
Optical Society of America
Volume
18
Issue
1
Pages
340 - 347
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
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
Course
Other identifiers
Book Title
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