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Kim, Kirak; Cho, Eou-Sik; Kwon, Sang Jik

Analyses of the light extraction efficiency of organic light-emitting diodes with ITO/mesh-Ag/ITO anode and its optical transmittance as transparent electrode

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  • Media type: E-Article
  • Title: Analyses of the light extraction efficiency of organic light-emitting diodes with ITO/mesh-Ag/ITO anode and its optical transmittance as transparent electrode
  • Contributor: Kim, Kirak; Cho, Eou-Sik; Kwon, Sang Jik
  • Published: IOP Publishing, 2021
  • Published in: Japanese Journal of Applied Physics, 60 (2021) 12, Seite 122007
  • Language: Not determined
  • DOI: 10.35848/1347-4065/ac34d3
  • ISSN: 0021-4922; 1347-4065
  • Keywords: General Physics and Astronomy ; Physics and Astronomy (miscellaneous) ; General Engineering
  • Origination:
  • Footnote:
  • Description: Abstract We have used the three-dimensional finite-difference time-domain simulation method to analyze the out-coupling efficiency of organic light-emitting diodes (OLEDs) with an ITO/Mesh-Ag/ITO anode. The period and grid space of the meshed Ag structure effectively affected the extraction ratio (ER) of the bottom-emitting OLED. The 3D simulation results for a simple structure of OLED with an ITO/Mesh-Ag/ITO anode showed the ER of about 26.4% and it enhanced 2.26 times that of the continuous Ag layer of about 11.7%. In addition, in respect to the transparent electrode of the OLED using the ITO/Mesh-Ag/ITO multiple layers, the Ag thickness and open ratio were important factors that affected the transmittance and the electrical conductance. The open ratio of 60% resulted in sheet resistance of less than 25 Ω/□, while keeping the transmittance nearly similar to that in the case of a single ITO layer.