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Proceedings Paper

Improvement in lifetime of green organic light-emitting device
Author(s): Hyun Chul Ki; Seon Hoon Kim; Doo Gun Kim; Hyun Jin Kim; Hang Ju Ko; Myung-Soo Han; Hwe Jong Kim; Kyung Jin Hong
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Paper Abstract

We have proposed a novel encapsulation method with simple process in comparison with conventional encapsulation technique. Here, the encapsulation film of silicon dioxide is steady for external environment because this can be designed to cover the emitting organic material from air. Silicon dioxide of 220 nm was deposited by plasma enhanced chemical vapor deposition and etched by reactive ion etching system. Then, Alq3 was used as a material to emitting layer in the green (organic light emitting device) OLED and TPD in the hole transportation layer was used for the harmonious transportation of hole. Luminance was measured with 40 hour intervals at the air-exposed condition. After 400, 1,000, 1,600, and 2,000 hours, luminance of green OLED were 7,366, 7,200, 6,210, and 5,100 cd/m2, respectively. Luminance of green OLED doesn't decrease until 2,000 hours. As a results, proposed encapsulation technique can increase the life time of green OLED.

Paper Details

Date Published: 1 March 2010
PDF: 8 pages
Proc. SPIE 7599, Organic Photonic Materials and Devices XII, 75991M (1 March 2010); doi: 10.1117/12.841699
Show Author Affiliations
Hyun Chul Ki, Korea Photonics Technology Institute (Korea, Republic of)
Seon Hoon Kim, Korea Photonics Technology Institute (Korea, Republic of)
Doo Gun Kim, Korea Photonics Technology Institute (Korea, Republic of)
Hyun Jin Kim, Korea Photonics Technology Institute (Korea, Republic of)
Hang Ju Ko, Korea Photonics Technology Institute (Korea, Republic of)
Myung-Soo Han, Korea Photonics Technology Institute (Korea, Republic of)
Hwe Jong Kim, Korea Photonics Technology Institute (Korea, Republic of)
Kyung Jin Hong, Gwangju Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 7599:
Organic Photonic Materials and Devices XII
Robert L. Nelson; François Kajzar; Toshikuni Kaino, Editor(s)

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