An electrode is provided that is economically produced and capable of efficiently injecting holes. Also provided are a method to form an
electrode that is capable of easily manufacturing such an
electrode, a highly reliable thin-film
transistor, an
electronic circuit using this thin-film
transistor, an organic electroluminescent element, a display, and
electronic equipment. A thin-film
transistor is a top-gate thin-film transistor. The thin-film transistor includes a source electrode and a drain electrode that are placed separately from each other. The thin-film transistor also includes an
organic semiconductor layer that is laid out between the source electrode and the drain electrode, and a gate insulating layer that is provided between the
organic semiconductor layer and a gate electrode. This structure is mounted on a substrate. Each of the source electrode and the drain electrode is composed of two
layers, that is, an underlying electrode layer and a
surface electrode layer. The
surface electrode layer includes an
oxide containing at least one of Cu, Ni, Co, Ag.