半导体光子学与技术, 1996, 2 (4): 293, 网络出版: 2011-08-02
Molecular Doped Polymer Light Emitting Diodes with Air-stable Aluminum as Cathode
Molecular Doped Polymer Light Emitting Diodes with Air-stable Aluminum as Cathode
摘要
Abstract
By using air-stable alumminum as cathode,molecular doped polymer (MDP) blue light emitting diodes(LEDs)were constructed.Poly(N-vinylcarbazole(PVK)doped with,1,1,4,4-tetrapheny 1-1,3-butadiens(TPB)was used as the light-emitting layer,a layer of 2-(4-biphenylyl)-5-(4-terbutypheny)1-3,4-oxadiazole(PBD) as hole-blocking,electron-transporting layer and a layer of tris(8-quinolinolate)-Aluminum(Alq3)film also worked as an electron-transporting layer.The device with structure of ITO/PVK;TPB/PBD/Alq3/Al was fabricated.Blue emis-sion began at about 4V,more than 1000 cd/m^2 was achieved at 14V.This is the lowest turn-on voltage for polymeric lgiht-emitting diodes(PLEDS)used air-stable elec-trodes.Such low-operating voltage,especially using air-stable aluminum as cathode,may be helpful for the devices to be used in commercially viable displays.
CHEN Baijun, HOU Jingying, XUE Shanhua, LIU Shiyong. Molecular Doped Polymer Light Emitting Diodes with Air-stable Aluminum as Cathode[J]. 半导体光子学与技术, 1996, 2(4): 293. CHEN Baijun, HOU Jingying, XUE Shanhua, LIU Shiyong. Molecular Doped Polymer Light Emitting Diodes with Air-stable Aluminum as Cathode[J]. Semiconductor Photonics and Technology, 1996, 2(4): 293.
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