
Proceedings Paper
Very low color-temperature organic light-emitting diodes for lighting at nightFormat | Member Price | Non-Member Price |
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Paper Abstract
Light sources with low color temperature (CT) are essential for their markedly
less suppression effect on the secretion of melatonin, and high power efficiency is crucial
for energy-saving. To provide visual comfort, the light source should also have a
reasonably high color rendering index (CRI). In this report, we demonstrate the design
and fabrication of low CT and high efficiency organic light-emitting diodes. The best
resultant device exhibits a CT of 1,880 K, much lower than that of incandescent bulbs
(2,000-2,500 K) and even as low as that of candles, (1,800-2,000 K), a beyond theoretical
limit external quantum efficiency 22.7 %, and 36.0 lm/W at 100 cd/m 2. The high
efficiency of the proposed device may be attributed to its interlayer, which helps
effectively distribute the entering carriers into the available recombination zones.
Paper Details
Date Published: 17 December 2011
PDF: 9 pages
Proc. SPIE 8312, Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy III, 83120D (17 December 2011); doi: 10.1117/12.902714
Published in SPIE Proceedings Vol. 8312:
Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy III
Min Gu, Editor(s)
PDF: 9 pages
Proc. SPIE 8312, Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy III, 83120D (17 December 2011); doi: 10.1117/12.902714
Show Author Affiliations
Jwo-Huei Jou, National Tsing Hua Univ. (Taiwan)
Ming-Chun Tang, National Tsing Hua Univ. (Taiwan)
Pin-Chu Chen, National Tsing Hua Univ. (Taiwan)
Szu-Hao Chen, National Tsing Hua Univ. (Taiwan)
Ming-Chun Tang, National Tsing Hua Univ. (Taiwan)
Pin-Chu Chen, National Tsing Hua Univ. (Taiwan)
Szu-Hao Chen, National Tsing Hua Univ. (Taiwan)
Shih-Ming Shen, National Tsing Hua Univ. (Taiwan)
Chien-Chih Chen, Industrial Technology Research Institute (Taiwan)
Ching-Chiun Wang, Industrial Technology Research Institute (Taiwan)
Chien-Tien Chen, National Tsing Hua Univ. (Taiwan)
Chien-Chih Chen, Industrial Technology Research Institute (Taiwan)
Ching-Chiun Wang, Industrial Technology Research Institute (Taiwan)
Chien-Tien Chen, National Tsing Hua Univ. (Taiwan)
Published in SPIE Proceedings Vol. 8312:
Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy III
Min Gu, Editor(s)
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