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结合有机发光和光电二极管器件,制作了一种新型的有机光电开关器件。器件结构为:ITO/NPB/Alq3/CuPc/C60/NPB/Alq3/LiF/Al。其中,ITO(indiumtinoxide,氧化铟锡)为正极,NPB[N,N-′di(naphthaleneyl)-N,N-′diphenylbenzidine]/Alq3[tris-(8-hydro-xyquinoline,8-羟基喹啉铝)aluminum]作为电致发光层,CuPc(CopperPhthalocyanine,酞菁铜)/C60为光电转换层,LiF/Al为器件负极,即两个电致发光层和一个光电转换层组成的三明治型结构。从低向高施加电压和从高向低施加电压时,该器件呈现出不同的电流密度-电压(J-V)和功率密度电压(P-V)曲线,即器件在相同的电压下可得到不同的电流密度值和功率密度值(亮度值),利用高亮度状态(ON)到低亮度状态(OFF)的转变,可实现开关型有机电致发光器件。器件的光电转换层吸收效率为0.153%。
Combined with organic light-emitting and photodiode devices, a new type of organic photoelectric switch device was fabricated. The device structure is: ITO / NPB / Alq3 / CuPc / C60 / NPB / Alq3 / LiF / Al. Among them, ITO (indium tin oxide) is a positive electrode, and NPB [N, N -di (naphthaleneyl) -N, N-ethylphenylzidine] / Alq3 [tris- (8-hydro- xyquinoline) ) aluminum] as an electroluminescent layer, CuPc (Copper Phthalocyanine) / C60 as a photoelectric conversion layer and LiF / Al as a device negative electrode, ie, a sandwich structure consisting of two electroluminescent layers and one photoelectric conversion layer. The devices exhibit different current density-voltage (JV) and power-density voltage (PV) curves when the voltage is applied from low to high and from high to low, ie, the device achieves different current densities at the same voltage Value and power density value (luminance value), a switch-type organic electroluminescent device can be realized by utilizing a transition from a high brightness state (ON) to a low brightness state (OFF). The device photoelectric conversion layer absorption efficiency of 0.153%.