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Proceedings Article

High-efficiency white OLEDs based on small molecules

[+] Author Affiliations
Tukaram K. Hatwar, Jeffrey P. Spindler, M. L. Ricks

Eastman Kodak Co. (United States)

Ralph H. Young

Univ. of Rochester (United States)

Yuuhiko Hamada, N. Saito, Kazunobu Mameno, Ryuji Nishikawa, Hisakazu Takahashi

SANYO Electric Co. Ltd. (Japan)

G. Rajeswaran

SK Display Corp. (Japan)

Proc. SPIE 5214, Organic Light-Emitting Materials and Devices VII, 233 (February 16, 2004); doi:10.1117/12.514536
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From Conference Volume 5214

  • Organic Light-Emitting Materials and Devices VII
  • Zakya H. Kafafi; Paul A. Lane
  • San Diego, California, USA | August 03, 2003

abstract

Eastman Kodak Company and SANYO Electric Co., Ltd. recently demonstrated a 15" full-color, organic light-emitting diode display (OLED) using a high-efficiency white emitter combined with a color-filter array. Although useful for display applications, white emission from organic structures is also under consideration for other applications, such as solid-state lighting, where high efficiency and good color rendition are important. By incorporating adjacent blue and orange emitting layers in a multi-layer structure, highly efficient, stable white emission has been attained. With suitable host and dopant combinations, a luminance yield of 20 cd/A and efficiency of 8 lm/W have been achieved at a drive voltage of less than 8 volts and luminance level of 1000 cd/m2. The estimated external efficiency of this device is 6.3% and a high level of operational stability is observed. To our knowledge, this is the highest performance reported so far for white organic electroluminescent devices. We will review white OLED technology and discuss the fabrication and operating characteristics of these devices.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Tukaram K. Hatwar ; Jeffrey P. Spindler ; M. L. Ricks ; Ralph H. Young ; Yuuhiko Hamada, et al.
"High-efficiency white OLEDs based on small molecules", Proc. SPIE 5214, Organic Light-Emitting Materials and Devices VII, 233 (February 16, 2004); doi:10.1117/12.514536; http://dx.doi.org/10.1117/12.514536


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