Title |
Growth and characterization of thin Cu-phthalocyanine films on MgO(001) layer for organic light-emitting diodes
|
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Published in |
Discover Nano, November 2012
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DOI | 10.1186/1556-276x-7-650 |
Pubmed ID | |
Authors |
Yu Jeong Bae, Nyun Jong Lee, Tae Hee Kim, Hyunduck Cho, Changhee Lee, Luke Fleet, Atsufumi Hirohata |
Abstract |
Surface morphology and thermal stability of Cu-phthalocyanine (CuPc) films grown on an epitaxially grown MgO(001) layer were investigated by using atomic force microscope and X-ray diffractometer. The (002) textured β phase of CuPc films were prepared at room temperature beyond the epitaxial MgO/Fe/MgO(001) buffer layer by the vacuum deposition technique. The CuPc structure remained stable even after post-annealing at 350°C for 1 h under vacuum, which is an important advantage of device fabrication. In order to improve the device performance, we investigated also current-voltage-luminescence characteristics for the new top-emitting organic light-emitting diodes with different thicknesses of CuPc layer. |
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