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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 5 — Mar. 1, 2010
  • pp: 616–618

Pure white hybrid light-emitting device with color rendering index higher than 90

Gang Cheng, Marco Mazzeo, Stefania D’Agostino, Fabio Della Sala, Sonia Carallo, and Giuseppe Gigli  »View Author Affiliations

Optics Letters, Vol. 35, Issue 5, pp. 616-618 (2010)

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The realization of white-light sources with a combination of high color rendering index (CRI), which is the average of the first eight rendering indices, and the deep-red color rendering R9 is an important challenge in the field of solid-state lighting. Herein, we report on a pure white hybrid light-emitting device combining a deep-blue emission from a polymer with blue, green, and red emissions from ternary CdSe/ZnS quantum dots. By carefully designing the device structure and tuning the ratio of QDs with different sizes, high CRI of 94 and R9 of 92 at 525   cd / m 2 were achieved.

© 2010 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(250.5230) Optoelectronics : Photoluminescence
(260.3800) Physical optics : Luminescence
(160.4236) Materials : Nanomaterials

ToC Category:

Original Manuscript: October 14, 2009
Revised Manuscript: January 8, 2010
Manuscript Accepted: January 12, 2010
Published: February 19, 2010

Gang Cheng, Marco Mazzeo, Stefania D'Agostino, Fabio Della Sala, Sonia Carallo, and Giuseppe Gigli, "Pure white hybrid light-emitting device with color rendering index higher than 90," Opt. Lett. 35, 616-618 (2010)

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