| OLED shows great potential in mobile display and solid-state lighting and has got a good commercial application in mobile display.Since 1980 s,the performance of OLED has achieved huge improvement because of the new materials and efficient device structure.In order to further promote the development of the industrialization of OLED,reducing the material price and simplifying the device structure are still necessary.This paper focuses on making efficient OLED according to the new HIL and HTL to promote the industrialization of OLED.1.CuSCN was Utilized to replace the traditional metal oxides(such as MoO3)or PEDOT:PSS to fabricate blue OLED with maximum current efficiency of 23.5 cd/A,which is higher than that of the device based on MoO3.Moreover,CE of the device baed on CuSCN droped lightly under the high brightness.On the other hand,the device of CuSCN exhibited better stability comparing to the device of PEDOT:PSS because of the corrosion and water imbibition of PEDOT:PSS,while they were both prepared by spin-coating.2.DPhPz,a new host material possessing proper HOMO energy level,was used to fabricate the efficient OLED without traditional HTL thus simplifying the structure of the device.Maximum current efficiency of 36.8 cd/A,power efficiency of 25.5 lm/W and quantum efficiency of 19.6% was achieved which is better than traditional structure.3.PEDOT:SAF and DA:PSS prepared by replacing part of PEDOT:PSS were used to fabricate efficient OLED instead of PEDOT:PSS.Maximum current efficiencies of 30.7 cd/A and 22.6 cd/A,as well as maximum power efficiency of 20.8 lm/W and 8.7 lm/W were obtained,corrosponding to the device fabricated by PEDOT:SAF DA:PSS,respectively. |
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