Citation: DENG Rui-Ping, ZHOU Liang, LI Lei-Jiao, ZHANG Hong-Jie. Indium Tin Oxide Anode Self-Assembled Monolayer Modification for Device Performance Improvement of Organic Light-Emitting Diodes[J]. Chinese Journal of Inorganic Chemistry, ;2015, 31(9): 1839-1846. doi: 10.11862/CJIC.2015.242
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A novel alkoxysilane (Cz-Si) was synthesized and used as an active reagent for self-assembled monolayer (SAM) modification on indium tin oxide (ITO) surface. The as-prepared Cz-Si could modify the ITO surface successfully under the mild atmosphere without any protection, offering simple and easy experimental operation. To investigate the effect of SAM modification on the device performances, based on ITO/SAM anodes, a series of organic light-emitting diodes (OLEDs) were fabricated: ITO/SAM (or unmodified)/NPB (40~50 nm)/Alq3 (60 nm)/LiF (1.0 nm)/Al. The devices show improvement compared to their counterparts with bare ITO anodes. The improvement could be attributed to the modulating of the electronic energy, surface roughness and interface integrity at the ITO/hole transporting layer (HTL) interface by SAM modification.
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