The effect of NPB morphology on OLEDs optoelectronic characteristics

  • Jiang, Yurong (Department of Photo-electronic Engineering, School of Information science and Technology, Beijing Institute of Technology) ;
  • Xue, Wei (Department of Photo-electronic Engineering, School of Information science and Technology, Beijing Institute of Technology)
  • Published : 2004.08.23

Abstract

NPB surface morphologies deposited on different temperature substrates were investigated using atomic force microscopy(AFM). It has been found that the NPB morphology turned from island morphology at high temperature(100$^{\circ}C$) to grain morphology at room temperature. To characterize the effect of NPB surface morphology, the devices with the structure of Glass/ITO/NPB/$Alq_3$/Al were fabricated using NPB films deposited at different substrate temperature and their performances were compared.

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