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The effect of various positions and thicknesses of cesium chloride (CsCl) layer in organic light-emitting diodes is investigated. The basic device configuration is indium–tin–oxide (ITO)/N,N′-bis-(1-naphthl)-diphenyl-1,1′-biphenyl-4,4′-diamine (NPB)/tris (8-hydroxyquinoline) aluminum (Alq 3 )/aluminum (Al). The following results are demonstrated. When the CsCl layer is placed at the Alq ...
The performance of organic light-emitting diodes (OLED), based on NPB/Alq 3 /KCl/Alq 3 active regions, with various anode (i.e. ITO and ITO/MoO 3 ) and cathode (i.e. Al and LiF/Al) structures is compared. NPB, Alq 3 , KCl, ITO, MoO 3 , Al and LiF are N,N′-bis-(1-naphthl)-diphenyl-1,1′-biphenyl-4,4′-diamine, tris (8-hydroxyquinoline) aluminum, potassium chloride,...
A series of small molecular organic light-emitting diodes (OLEDs) based on tris (8-hydroxyquinoline) aluminum (Alq 3 ) was fabricated by varying thicknesses and positions of cesium chloride (CsCl) layer inside Alq 3 layer. Both luminance and efficiency are enhanced due to the improvement of electron injection when a CsCl layer was deposited between Alq 3 and aluminum (Al)....
A multilayer organic light-emitting diode (OLED) has been fabricated with a thin (1nm) potassium chloride (KCl) layer inserted inside an electron transport layer (ETL), tris (8-hydroxyquinoline) aluminum (Alq 3 ). The structure of device was ITO/NPB/Alq 3 /KCl/Alq 3 /Al. The KCl layer was inserted inside 60nm Alq 3 at 10, 20 and 30nm positions away from the Alq ...
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