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Color Temperature Tunable White Organic Light-Emitting Diodes
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- Authors
- Chul Woong Joo, Jaehyun Moon, Jun-Han Han, Jin Woo Huh, Jonghee Lee, Nam Sung Cho, Joohyun Hwang, Hye Yong Chu, Jeong-Ik Lee
- Issue Date
- 2014-01
- Citation
- Organic Electronics, v.15, no.1, pp.189-195
- ISSN
- 1566-1199
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- In this work, we demonstrated color-tunable white organic light-emitting diodes by stacking upper orange transparent and lower blue bottom emission organic light-emitting diodes (OLEDs). By independently operating each OLED, it was possible to tune the color temperature in a range of 1500-10,000 K, which covers the full Planckian locus in the 1931 CIE space. In designing stable and efficient OLEDs, in addition to the electrical characteristics, the importance of internal microcavity was emphasized and implemented. In fabricating the upper transparent OLED, special attention was paid to the capping layer for enhancing the emission. Our results presented a general guideline that is practically useful in designing high-performance color-tunable OLEDs with transparent OLEDs. © 2013 Elsevier B.V. All rights reserved.
- KSP Keywords
- Capping layer, Color temperature, Color tunable, Electrical characteristics, High performance, Tunable White, light emitting diodes(LED), organic light emitting diode(OLED)