By a News Reporter-Staff News Editor at Electronics Newsweekly -- Data detailed on Organic Electronics have been presented. According to news reporting originating in Changchun, People's Republic of China, by VerticalNews journalists, research stated, "There are many challenges for a direct application of graphene as the electrodes in organic electronics due to its hydrophobic surfaces, low work function (WF) and poor conductance. The authors demonstrate a modified single-layer graphene (SLG) as the anode in organic light-emitting diodes (OLEDs)."
The news reporters obtained a quote from the research from Jilin University, "The SLG, doped with the solution-processed titanium suboxide (TiOx) and poly(3,4-ethylenedio-xythiophene)/poly(styrene sulfonic acid) (PEDOT:PSS), exhibits excellent optoelectronic characteristics with reduced sheet resistance (R-sq), increased work function, as well as over 92% transmittance in the visible region. It is notable that the R-sq of graphene decreased by similar to 86% from 628 Omega/sq to 86 Omega/sq and the WF of graphene increased about 0.82 eV from 4.30 eV to 5.12 eV after a modification by using the TiOx-PEDOT: PSS double interlayers. In addition, the existence of additional TiOx and PEDOT: PSS layers offers a good coverage to the PMMA residuals on SLG, which are often introduced during graphene transfer processes. As a result, the electrical shorting due to the PMMA residues in the device can be effectively suppressed. By using the modified SLG as a bottom anode in OLEDs, the device exhibited comparable current efficiency and power efficiency to those of the ITO based reference OLEDs."
According to the news reporters, the research concluded: "The approach demonstrated in this work could potentially provide a viable way to fabricate highly efficient and flexible OLEDs based on graphene anode."
For more information on this research see: The application of single-layer graphene modified with solution-processed TiOx and PEDOT:PSS as a transparent conductive anode in organic light-emitting diodes. Organic Electronics, 2013;14(12):3348-3354. Organic Electronics can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Organic Electronics - www.elsevier.com/wps/product/cws_home/620806)
Our news correspondents report that additional information may be obtained by contacting X.Z. Zhu, Jilin University, State Key Lab Integrated Optoelect, Changchun 130012, Jilin, People's Republic of China. Additional authors for this research include Y.Y. Han, Y. Liu, K.Q. Ruan, M.F. Xu, Z.K. Wang, J.S. Jie and L.S. Liao.
Keywords for this news article include: Asia, Changchun, Organic Electronics, Light-emitting Diode, People's Republic of China
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