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Cho H, Lee H, Lee J, et al. Stable angular emission spectra in white organic light-emitting diodes using graphene/PEDOT:PSS composite electrode. Opt Express. 2017;25(9):9734-9742doi: 10.1364/OE.25.009734.
Cho, H., Lee, H., Lee, J., Sung, W. J., Kwon, B. H., Joo, C. W., Shin, J. W., Han, J. H., Moon, J., Lee, J. I., Cho, S., & Cho, N. S. (2017). Stable angular emission spectra in white organic light-emitting diodes using graphene/PEDOT:PSS composite electrode. Optics express, 25(9), 9734-9742. https://doi.org/10.1364/OE.25.009734
Cho, Hyunsu, et al. "Stable angular emission spectra in white organic light-emitting diodes using graphene/PEDOT:PSS composite electrode." Optics express vol. 25,9 (2017): 9734-9742. doi: https://doi.org/10.1364/OE.25.009734
Cho H, Lee H, Lee J, Sung WJ, Kwon BH, Joo CW, Shin JW, Han JH, Moon J, Lee JI, Cho S, Cho NS. Stable angular emission spectra in white organic light-emitting diodes using graphene/PEDOT:PSS composite electrode. Opt Express. 2017 May 01;25(9):9734-9742. doi: 10.1364/OE.25.009734. PMID: 28468353.
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Opt Express. 2017 May 01;25(9):9734-9742. doi: 10.1364/OE.25.009734.

Stable angular emission spectra in white organic light-emitting diodes using graphene/PEDOT:PSS composite electrode.

Optics express

Hyunsu Cho, Hyunkoo Lee, Jonghee Lee, Woo Jin Sung, Byoung-Hwa Kwon, Chul-Woong Joo, Jin-Wook Shin, Jun-Han Han, Jaehyun Moon, Jeong-Ik Lee, Seungmin Cho, Nam Sung Cho

PMID: 28468353 DOI: 10.1364/OE.25.009734

Abstract

In this work, we suggest a graphene/ poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) composite as a transparent electrode for stabilizing white emission of organic light-emitting diodes (OLEDs). Graphene/PEDOT:PSS composite electrodes have increased reflectance when compared to graphene itself, but their reflectance is still lower than that of ITO itself. Changes in the reflectance of the composite electrode have the advantage of suppressing the angular spectral distortion of white emission OLEDs and achieving an efficiency of 16.6% for white OLEDs, comparable to that achieved by graphene-only electrodes. By controlling the OLED structure to compensate for the two-beam interference effect, the CIE color coordinate change (Δxy) of OLEDs based on graphene/PEDOT:PSS composite electrodes is 0.018, less than that based on graphene-only electrode, i.e.,0.027.

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