【摘 要】
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A novel white emitting organic diode has been simply realized by inserting a doped hole-blocking layer between the hole transporting layer(HTL)and the electron
【机 构】
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Department to Materials Science,Shanghai University,Shanghai 201800
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A novel white emitting organic diode has been simply realized by inserting a doped hole-blocking layer between the hole transporting layer(HTL)and the electron transporting layer(ETL).The structure of this device is ITO/CuPc/NPB/blocking layer:rubrene/Alq/MgAg.Copper phthalocyanine(CuPc)was used as a buffer layer,N,N-bis-(1-naphthy1)-N,N-DIPHENYL-1-biphenyl-4,4-diamine(NPB)as te HTL,and trimer of complex(Alq) as ETL.Indium tin oxide and MgAg were the anode and cathode,respectively.The emission spectrum of this device covers a wide range of visible region and can be sensitively adjusted by the concentration of rebrene.The white emission with the CIE(Commission Inteational de lEclairage)color coordinates x=0.31,y=0.32,a maximum luminance of 8635 cd/m2,and the luminous efficiency 1.39lm/W at the luminance of 100 cd/m2 were obtained in the device with 1.5% rebrene concentration in TPBi.
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