Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)
- Volume 16 Issue 4
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- Pages.307-311
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- 1999
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- 1225-9098(pISSN)
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- 2288-1069(eISSN)
DOI QR Code
Buffer Effect of Copper Phthalocyanine(CuPC)
카퍼 프탈로시아닌의 완충효과
- Kim, Jung-Hyun (Dept. of Chemical Engineering, Hongik University) ;
- Shin, Dong-Muyng (Dept. of Chemical Engineering, Hongik University) ;
- Shon, Byoung-Choung (Dept. of Chemical Engineering, Hongik University)
- Published : 1999.12.31
Abstract
Interfacial properties of electrode and organic thin layer is one of the most important factor in performing a Light Emitting Diodes(LED). Phthalocyanine copper was used as a buffer layer to improve interface characteristic, so that device efficiency was improved. In this study, LEDs were fabricated as like structures of Indium-Tin-Oxide (ITO) / N,N' -Diphenyl-N,N'-di(m-tolyl)-benzidine (TPD) / 8-Hydroxyquinoline aluminum(Alq) / Aluminum(Al) and Indium-Tin-Oxide(ITO) / N,N'-Diphenyl-N,N' -di(m-tolyl)-benzidine(TPD) / 2-(4-Biphenylyl)-5(4-tert-butyl-phenyl)-1,3,4-oxadiazole(PBD) / Aluminum(Al). In these devices, CuPC was layered at electrode/organic layer interface. As position is changing and thickness is changing, devices showed characteristic luminescence efficiency and luminescence inensity respectively. We showed in this study that luminescence efficiency was improved with CuPC layer in LEDs. The efficiency of device with layer CuPC is higher than that of 2 layer CuPC. However, the luminescence of 2 layer CuPC device got higher value.
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