Enhanced performance of organic electroluminescent diodes by UV-ozone treatment of molybdenum trioxide

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• 作者：Zhenbo Deng ; Zhaoyue L¨¹ ; Denghui Xu ; Jing Xiao ; Yongsheng Wang
• 关键词：UV&ndash ; ozone treatment ; Molybdenum trioxide ; Sheet resistance ; X-ray photoelectron spectroscopy
• 刊名：Solid-State Electronics
• 出版年：2012
• 出版时间：October, 2012
• 年：2012
• 卷：76
• 期：Complete
• 页码：25-29
• 全文大小：370 K

文摘

The operating voltage is reduced and luminous efficiency is improved in the organic light-emitting diodes (OLEDs) with UV-ozone treatment of molybdenum trioxide (MoO₃) anode buffer layer. The interface of indium tin oxide (ITO)/MoO₃ was investigated by X-ray photoelectron spectroscopy. It was found that the binding energies of Mo 3d, O 1s, In 3d and C 1s were shifted to higher after UV-ozone treated MoO₃. The enhanced properties are impervious to the UV-ozone treatment of ITO. Therefore, the improved performance can be attributed that the binding energies of Mo 3d, O 1s, In 3d and C 1s are changed to higher and also that the sheet resistance of ITO/MoO₃ films is decreased after UV-ozone treated MoO₃.