Figure 2

Device structures and J-V characteristics of electron- and hole-only devices. (a) Electron-only devices. (b) Hole-only devices. (c) J-V characteristics of the electron-only devices without (E-1 and E-3) and with (E-2) C60/pentacene OSHJs. (d) J-V characteristics of the electron-only devices without (H-1, H-3) and with (H-2) C60/pentacene OSHJs.