Triboelectric generator
Example embodiments relate to triboelectric generators that include a first electrode and a triboelectric material layer facing first electrode, and a self-assembled monolayer that is combined with a surface of the first electrode or a surface of the triboelectric material layer between the first electrode and the triboelectric material layer. The self-assembled monolayer is formed of or include a material that includes a silane group, a silanol group, or a thiol group according to a material to be combined.
1. A triboelectric generator comprising:
a first electrode and a triboelectric material layer facing the first electrode; and
a first self-aligning monolayer that is combined with one of a surface of the first electrode and a surface of the triboelectric material layer, the first self-aligning monolayer being between the first electrode and the triboelectric material layer,
wherein the other one of the surface of the first electrode and the surface of the triboelectric material layer is not combined with a self-aligning monolayer, and
the first electrode comprises a metal oxide, and the first self-aligning monolayer includes a silane group or a silanol group combined with the surface of the first electrode.
2. The triboelectric generator of claim 1 , wherein the first self-aligning monolayer has a thickness in a range from about 0.2 nm to about 5 nm.
3. The triboelectric generator of claim 1 , wherein the triboelectric material layer comprises a polymer that has a greater amount of negative charges than the first electrode when there is a friction between the triboelectric material layer and the first electrode.
4. A triboelectric generator comprising:
a first electrode and a first triboelectric material layer facing each other;
a first self-aligning monolayer on a surface of the first electrode facing the first triboelectric material layer; and
a second self-aligning monolayer on a surface of the first triboelectric material layer facing the first electrode,
wherein the first triboelectric material layer is not in contact with an electrode, and
the first electrode comprises a metal oxide, and the first self-aligning monolayer includes a silane group or a silanol group combined with the surface of the first electrode.
5. The triboelectric generator of claim 4 , wherein the first self-aligning monolayer has a thickness in a range from about 0.2 nm to about 5 nm.
6. The triboelectric generator of claim 4 , wherein the second self-aligning monolayer comprises at least one of a silane group, a silanol group, and a thiol group combined with the surface of the first electrode.
7. The triboelectric generator of claim 4 , wherein the first triboelectric material layer comprises a polymer including oxygen or a non-metallic oxide, and the second self-aligning monolayer includes a material that includes a silane group, a silazane group, or a silanol group.
8. A triboelectric generator comprising:
a first electrode and a first triboelectric material layer facing each other;
a second triboelectric material layer and a first self-aligning monolayer sequentially stacked on a surface of the first electrode facing the first triboelectric material layer; and
a second self-aligning monolayer on a surface of the first triboelectric material layer facing the first electrode,
wherein the first triboelectric material layer is not in contact with an electrode,
the first self-aligning monolayer includes a functional group combined with a surface of the second triboelectric material layer, and
the first triboelectric material layer comprises a polymer including oxygen or non-metallic oxide, and the second self-aligning monolayer comprises a material that includes a silane group, a silazane group, or a silanol group.