High-efficiency white OLEDs based on small molecules

Tukaram K. Hatwar; Jeffrey P. Spindler; M. L. Ricks; Ralph H. Young; Yuuhiko Hamada; N. Saito; Kazunobu Mameno; Ryuji Nishikawa; Hisakazu Takahashi; G. Rajeswaran

doi:10.1117/12.514536

16 February 2004 High-efficiency white OLEDs based on small molecules

Tukaram K. Hatwar, Jeffrey P. Spindler, M. L. Ricks, Ralph H. Young, Yuuhiko Hamada, N. Saito, Kazunobu Mameno, Ryuji Nishikawa, Hisakazu Takahashi, G. Rajeswaran

Author Affiliations +

Proceedings Volume 5214, Organic Light-Emitting Materials and Devices VII; (2004) https://doi.org/10.1117/12.514536
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

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.

Citation Download Citation

Tukaram K. Hatwar, Jeffrey P. Spindler, M. L. Ricks, Ralph H. Young, Yuuhiko Hamada, N. Saito, Kazunobu Mameno, Ryuji Nishikawa, Hisakazu Takahashi, and G. Rajeswaran "High-efficiency white OLEDs based on small molecules", Proc. SPIE 5214, Organic Light-Emitting Materials and Devices VII, (16 February 2004); https://doi.org/10.1117/12.514536

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available