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Journal Article
Design and fabrication of two-stack tandem-type all-phosphorescent white organic light-emitting diode for achieving high color rendering index and luminous efficacy
- Authors
- Hyunsu Cho, Chul Woong Joo, Jonghee Lee, Hyunkoo Lee, Jaehyun Moon, Jeong-ik Lee, Jun Yeob Lee, Youngjin Kang, Nam Sung Cho
- Issue Date
- 2016-10
- Citation
- Optics Express, v.24, no.21, pp.24161-24168
- ISSN
- 1094-4087
- Publisher
- Optical Society of America(OSA)
- Language
- English
- Type
- Journal Article
- Abstract
- White organic light-emitting diodes (WOLEDs) are regarded as the general lighting source. Although color rendering index (CRI) and luminous efficacy are usually in trade-off relation, we will discuss about the optimization of both characteristics, particularly focusing on the spectrum of a blue emitter. The emission at a shorter wavelength is substantially important for achieving very high CRI (> 90). The luminous efficacy of a phosphorescent blue emitter is low as its color falls in the deeper blue range; however, that does not show any significant influence on the WOLEDs. WOLEDs with different blue dopants are compared to confirm the calculation of the CRI and luminous efficacy, and the optimized WOLEDs exhibit luminous efficacy of 38.3 lm/W and CRI of 90.9.
- KSP Keywords
- Blue emitter, Design and fabrication, Organic light-emitting diodes(OLEDS), Trade-off, White organic light-emitting diodes, high CRI, high color rendering index, light-emitting diode(LED), lighting source, luminous efficacy
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
