Abstract
In this study, we investigated the effect of a random nanostructure scattering layer (RSL) on the microcavity and light extraction in organic light emitting diodes (OLEDs). In the case of the conventional OLED, the optical properties change with the thickness of the hole transporting layer (HTL) because of the presence of a microcavity. However, OLEDs equipped with the an RSL showed similar values of external quantum efficiency and luminous efficacy regardless of the HTL thickness. These phenomena can be understood by the scattering effect because of the RSL, which suppresses the microcavity effect and extracts the light confined in the device. Moreover, OLEDs with the RSL led to reduced spectrum and color changes with the viewing angle.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
Jun-Whee Kim, Ji-Hyang Jang, Min-Cheol Oh, Jin-Wook Shin, Doo-Hee Cho, Jae-Hyun Moon, and Jeong-Ik Lee
Opt. Express 22(1) 498-507 (2014)
Doo-Hee Cho, Jin-Wook Shin, Chul Woong Joo, Jonghee Lee, Seung Koo Park, Jaehyun Moon, Nam Sung Cho, Hye Yong Chu, and Jeong-Ik Lee
Opt. Express 22(S6) A1507-A1518 (2014)
Bo-Yen Lin, Yi-Ru Li, Chia-Hsuan Chen, Hao-Chun Hsu, Mao-Kuo Wei, Jiun-Haw Lee, and Tien-Lung Chiu
Opt. Express 30(11) 18066-18078 (2022)