Influence of TiO₂ Nanoparticles on Enhancement of Optoelectronic Properties of PFO-Based Light Emitting Diode

Figure 5

Mechanism of (a) charge injection/transport and (b) hopping and tunneling of electrons in the OLED device. (Open circle: hole; closed circle: electron.) A pair of hole and electron indicates an exciton.

(a)

(b)