• Characterization of organic light-emitting diode using a rubrene interlayer between electrode and hole transport layer

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    • Keywords


      Rubrene; hole injection; quantum tunnelling; thickness variation; stability.

    • Abstract


      In this paper, we report the characteristic properties of an organic light-emitting diode (OLED) using a rubrene buffer layer over the fluorine-doped tin oxide (FTO) surface. Our study includes both electrical and optical properties of the device. Here, we study the OLED devices at different thicknesses of the buffer layer, which varies from 3 to 11 nm. For device fabrication, we use a thermal evaporation unit. Finally, we report that device performance in a bilayer anode form is always higher than that of a single-FTO-based device. Maximum device efficiency is found to be 6.31 cd A$^{−1}$ around 8-nm thickness of rubrene layer over the FTO surface.We also study the stability of both the single-layer and double-layer anode OLED devices. Through this study, we found that both device efficiency and luminance intensity of the bilayer anode OLED remain more stable for more number of days compared with the single-FTO OLED device.

    • Author Affiliations



      1. Thin Film Laboratory, Department of Physics, J B College, Jorhat 785001, India
    • Dates

  • Bulletin of Materials Science | News

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