Emission characteristics of organic light-emitting diodes and organic thin-films with planar and corrugated structures.
In this paper, we review the emission characteristics from organic light-emitting diodes (OLEDs) and organic molecular thin films with planar and corrugated structures. In a planar thin film structure, light emission from OLEDs was strongly influenced by the interference effect. With suitable design of microcavity structure and layer thicknesses adjustment, optical characteristics can be engineered to achieve high optical intensity, suitable emission wavelength, and broad viewing angles. To increase the extraction efficiency from OLEDs and organic thin-films, corrugated structure with micro- and nano-scale were applied. Microstructures can effectively redirects the waveguiding light in the substrate outside the device. For nanostructures, it is also possible to couple out the organic and plasmonic modes, not only the substrate mode.
Wei
Mao-Kuo
MK
Department of Materials Science and Engineering, National Dong Hwa University, Shoufeng, Hualien, Taiwan.
Lin
Chii-Wann
CW
Yang
Chih-Chung
CC
Kiang
Yean-Woei
YW
Lee
Jiun-Haw
JH
Lin
Hoang-Yan
HY
D004566:Electrodes; D005898:Glass / Q000737:chemistry; D054023:Lasers, Semiconductor; D008029:Lighting; D009930:Organic Chemicals / Q000737:chemistry*; D017971:Tin Compounds / Q000737:chemistry
D009930:Organic Chemicals; D017971:Tin Compounds; C109984:indium tin oxide