Stable angular emission spectra in white organic light-emitting diodes using graphene/PEDOT:PSS composite electrode
Posted on 2017-04-28 - 19:29
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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Cho, Hyunsu; Lee, Hyunkoo; Lee, Jonghee; Sung, Woo Jin; Kwon, Byoung-Hwa; Joo, Chul-Woong; et al. (2017). Stable angular emission spectra in white organic light-emitting diodes using graphene/PEDOT:PSS composite electrode. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.3767372.v1
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AUTHORS (12)
HC
Hyunsu Cho
HL
Hyunkoo Lee
JL
Jonghee Lee
WS
Woo Jin Sung
BK
Byoung-Hwa Kwon
CJ
Chul-Woong Joo
JS
Jin-Wook Shin
JH
Jun-Han Han
JM
Jaehyun Moon
JL
Jeong-Ik Lee
SC
Seungmin Cho
NC
Nam Sung Cho