tesi R. Miscioscia.pdf - EleA@UniSA

38 State of the Art
figure 7: Top-gated OTFT architectures are fabricated by photholithography of the gate electrode
on a protective SiNx gate dielectric acting as a barrier[14].
2.3.3 Bottom-gate bottom-contacts (BGBC) structure
figure 8: bottom-gate bottom-contacts structure (BGBC)
The BCBG topology is the most convenient topology from the
industrial standpoint because makes it possible to obtain both a better
alignment and sufficiently small structures. In fact, this is the topology
on which the research it is most concentrated because it allows
manufacturing process on flexible substrates and enables device’s
printing workflows.
It’s also worth of notice that, except particular cases, Top-
Contacts devices (TC) have been reported to offer a lower contact
resistance than their Bottom-Contacts homologous (BC). This
behavioral asymmetry in contacts is principally bound to the