APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter UniPHY Group iResearch App Facebook

Applied Physics Letters / Volume 92 / Issue 3 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 92, 031102 (2008); http://dx.doi.org/10.1063/1.2833693 (3 pages)

Color-converting combinations of nanocrystal emitters for warm-white light generation with high color rendering index

Sedat Nizamoglu, Gulis Zengin, and Hilmi Volkan Demir

Department of Electrical and Electronics Engineering, Department of Physics, and Nanotechnology Research Center, Bilkent University, Ankara TR-06800, Turkey

View MapView Map

(Received 29 November 2007; accepted 19 December 2007; published online 22 January 2008)

Warm-white light emitting diodes with high color rendering indices are required for the widespread use of solid state lighting especially indoors. To meet these requirements, we propose and demonstrate warm-white hybrid light sources that incorporate the right color-converting combinations of CdSe/ZnS core-shell nanocrystals hybridized on InGaN/GaN LEDs for high color rendering index. Three sets of proof-of-concept devices are developed to generate high-quality warm-white light with (1) tristimulus coordinates (x,y) = (0.37,0.30), luminous efficacy (LE) = 307 lm/W, color rending index (CR) = 82.4, and correlated color temperature (CCT) = 3228 K; (2) (x,y) = (0.38,0.31), LE = 323 lm/W, CRI = 81.0, and CCT = 3190 K; and (3) (x,y) = (0.37,0.30), LE = 303 lm/W, CRI = 79.6, and CCT = 1982 K.

© 2008 American Institute of Physics

RELATED DATABASES

To view database links for this article, you need to log in.

KEYWORDS and PACS

Keywords

cadmium compounds, colour, gallium compounds, III-V semiconductors, II-VI semiconductors, indium compounds, light emitting diodes, light sources, nanostructured materials, nanotechnology, zinc compounds

PACS

  • 42.72.-g

    Optical sources and standards

  • 07.60.Dq

    Photometers, radiometers, and colorimeters

  • 85.60.Jb

    Light-emitting devices

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2833693

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    E. Sari, S. Nizamoglu, T. Ozel, and H. V. Demir, Appl. Phys. Lett. 90, 011101 (2007)APPLAB000090000001011101000001.

    V. A. Sabnis, H. V. Demir, O. Fidaner, J. S. Harris, D. A. B. Miller, J. F. Zheng, N. Li, T. C. Wu, H. T. Chen, and Y. M. Houng, Appl. Phys. Lett. 84, 469 (2004)APPLAB000084000004000469000001.

    T. Ozel, E. Sari, S. Nizamoglu, and H. V. Demir, J. Appl. Phys. 102, 113101 (2007)JAPIAU000102000011113101000001.


For access to citing articles, you need to log in.


Figures (2) Tables (1)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)



Close

Google Calendar

ADVERTISEMENT

Your Recent History Recent History Help

Recently Viewed

  1. Color-converting combinations of nanocrystal emitters for warm-white light generation with high color rendering index
  2. Organic solar cells with solution-processed graphene transparent electrodes
  3. Effects of gate dielectrics and metal electrodes on air-stable n-channel perylene tetracarboxylic dianhydride single-crystal field-effect transistors
  4. Thermal tunability of monolithic polymer microcavities
  5. All-optical switching and multistability in photonic structures with liquid crystal defects
Go to AIP Home
Copyright © American Institute of Physics
close