期刊
SYNTHETIC METALS
卷 205, 期 -, 页码 127-133出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2015.03.035
关键词
Organic light-emitting diode; Photonic microstructures; Optical modelling; Reciprocity theorem; Spatial emission pattern
资金
- Scottish Universities Physics Alliance (SUPA)
- Engineering and Physical Sciences Research Council (EPSRC)
- EPSRC [EP/K00042X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K00042X/1] Funding Source: researchfish
Integrating photonic microstructures into organic light-emitting diodes (OLEDs) has been a widely used strategy to improve their light out-coupling efficiency. However, there-is still a need for optical modelling methods which quantitatively characterise the spatial emission pattern of microstructured OLEDs. In this paper, we demonstrate such rigorous calculation using the reciprocity theorem. The calculation of the emission intensity at each direction in the far field can be simplified into only two simple calculations of an incident plane wave propagating from the far field into a single cell of the periodic structure. The emission from microstructured OLED devices with three different grating periods was calculated as a test of the approach, and the calculated results were in good agreement with experiment. This optical modelling method is a useful calculation tool to investigate and control the spatial emission pattern of microstructured OLEDs. (C) 2015 Elsevier B.V. All rights reserved.
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