Figure 3
Electroluminescent performances of the conventional OLED and OLEDs with C60/pentacene OSHJs as charge injectors. (a) J-V-L characteristics, (b) current efficiency as a function of current density characteristics, and (c) power efficiency as a function of current density characteristics of conventional OLED and OLEDs with OSHJs as hole injectors (hole): ITO/C60(20 nm)/pentacene(10 nm)/TCTA:MoO3(70 nm)/TCTA(10 nm)/TCTA: Ir(ppy)2(acac)(20 nm)/TPBi(10 nm)/TPBi:Li2CO3(40 nm)/Al(120 nm), as electron injectors (electron): ITO/TCTA:MoO3(70 nm)/TCTA(10 nm)/TCTA: Ir(ppy)2(acac)(20 nm)/TPBi(10 nm)/TPBi:Li2CO3(40 nm)/C60(20 nm)/pentacene(10 nm)/Al(120 nm), and as both hole and electron injectors (both): ITO/C60(20 nm)/pentacene(10 nm)/TCTA:MoO3(70 nm)/TCTA(10 nm)/TCTA: Ir(ppy)2(acac)(20 nm)/TPBi(10 nm)/TPBi:Li2CO3(40 nm)/C60(20 nm)/pentacene(10 nm)/Al(120 nm). (d) J-V-L characteristics, (e) current efficiency as a function of current density characteristics, and (f) power efficiency as a function of current density characteristics of OLEDs with OSHJs as both hole and electron injectors for Au, Ag, Cu, and Al metal contact electrodes: ITO/C60(20 nm)/pentacene(10 nm)/TCTA:MoO3(70 nm)/TCTA(10 nm)/TCTA: Ir(ppy)2(acac)(20 nm)/TPBi(10 nm)/TPBi:Li2CO3(40 nm)/C60(20 nm)/pentacene(10 nm)/Au, Ag, Cu or Al (120 nm).
