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Candle Light-Style Organic Light-Emitting Diodes

  1. Jwo-Huei Jou*,
  2. Chun-Yu Hsieh,
  3. Jing-Ru Tseng,
  4. Shiang-Hau Peng,
  5. Yung-Cheng Jou,
  6. James H. Hong,
  7. Shih-Ming Shen,
  8. Ming-Chun Tang,
  9. Pin-Chu Chen,
  10. Chun-Hao Lin

Article first published online: 19 DEC 2012

DOI: 10.1002/adfm.201203209

Additional Information

How to Cite

Jou, J.-H., Hsieh, C.-Y., Tseng, J.-R., Peng, S.-H., Jou, Y.-C., Hong, J. H., Shen, S.-M., Tang, M.-C., Chen, P.-C. and Lin, C.-H. (2012), Candle Light-Style Organic Light-Emitting Diodes. Adv. Funct. Mater.. doi: 10.1002/adfm.201203209

Author Information

  1. Department of Materials Science and Engineering, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsin-Chu 30013, Taiwan, Republic of China

*Department of Materials Science and Engineering, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsin-Chu 30013, Taiwan, Republic of China.

Publication History

  1. Article first published online: 19 DEC 2012
  2. Manuscript Revised: 23 NOV 2012
  3. Manuscript Received: 1 NOV 2012

Funded by

  • Taiwan National Science Council and Ministry of Economic Affairs. Grant Number: 100-EC-17-A-07-S1-181, NSC 101-3113-E-007-001, NSC 100-2119-M-007-011-MY3

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Keywords:

  • organic light emitting diodes;
  • candle light

Abstract

In response to the call for a physiologically-friendly light at night that shows low color temperature, a candle light-style organic light emitting diode (OLED) is developed with a color temperature as low as 1900 K, a color rendering index (CRI) as high as 93, and an efficacy at least two times that of incandescent bulbs. In addition, the device has a 80% resemblance in luminance spectrum to that of a candle. Most importantly, the sensationally warm candle light-style emission is driven by electricity in lieu of the energy-wasting and greenhouse gas emitting hydrocarbon-burning candles invented 5000 years ago. This candle light-style OLED may serve as a safe measure for illumination at night. Moreover, it has a high color rendering index with a decent efficiency.

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