Journal of the Korean Physical Society

, Volume 73, Issue 11, pp 1663–1674 | Cite as

Theoretical Modeling of the Internal Power Flow and Absorption Loss of the Air Mode Based on the Proposed Poynting Vector Analysis in Top-emitting Organic Light-emitting Diodes

  • Jiyong Kim
  • Jungho KimEmail author
  • Kyoung-Youm Kim


We propose the Poynting vector analysis of the air mode in a top-emitting organic light-emitting diode (OLED) by combining the transfer matrix method and dipole source term. The spatial profiles of the time-averaged optical power flow of the air mode are calculated inside and outside the multilayer structure of the OLED with respect to the thickness of the semi-transparent top cathode and capping layer (CPL). We elucidate how the micro-cavity effect controlled by the thickness variation of the semi-transparent top cathode or CPL affects the internal optical power and absorption loss inside the OLED multilayer and the external optical power coupled into the air. When the calculated absorption loss and external power obtained by the proposed Poynting vector and currently-used point dipole models are compared, two calculation results are identical, which demonstrates the validity of the two models.


Organic light-emitting diodes (OLEDs) Optical model Air mode Absorption loss 


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Copyright information

© The Korean Physical Society 2018

Authors and Affiliations

  1. 1.Department of Information DisplayKyung Hee UniversitySeoulKorea
  2. 2.Department of Electrical EngineeringSejong UniversitySeoulKorea

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