Electric device, method of manufacturing electric device and electric apparatus
View Patent ↗An electric device includes: a pair of electrodes, an organic semiconductor film and an organic film formed on a surface of at least one of the electrodes, wherein the organic this film includes a nonconjugated organic compound having a plurality of coupling groups coupled with the electrodes.
1. An electric device comprising:
a first electrode;
a second electrode;
an organic semiconductor film disposed between the first electrode and the second electrode; and
an organic film disposed between the first electrode and the semiconductor film, such that the organic film is disposed on at least a side surface of the first electrode, the organic film including a plurality of nonconjugated organic compounds, each of the plurality of nonconjugated organic compounds having a coupling group that is coupled with the first electrode, wherein
a number of the plurality of nonconjugated organic compounds that is coupled to the surface of the first electrode is from 0.50×10 15 to 0.92×10 15 pieces/cm 2 .
2. The electric device according to claim 1 , further comprising:
a gate electrode that is applying an electric field to the organic semiconductor film, the first electrode being one of a source and a drain electrode.
3. The electric device according to claim 1 , the first electrode having a plurality of first portions and a plurality of second portions, the plurality of first portions being coupled with the plurality of nonconjugated organic compounds, the plurality of second portions not being coupled with the plurality of nonconjugated organic compounds.
4. The electric device according to claim 3 , each of the plurality of nonconjugated organic compounds including a structure that has hydrophobicity at the opposite side of the coupling group of the each of the plurality of nonconjugated organic compounds.
5. The electric device according to claim 4 , each of the plurality of nonconjugated organic compounds being expressed as the general formula: CF 3 (CF 2 ) m (CH 2 ), CH(CH 2 SH) 2 , wherein m is integers from one to thirty five and n is integers from two to thirty three.
6. The electric device according to claim 5 , wherein the ratio of m/n satisfies the numbers from 0.25 to 18 in the general formula.
7. The electric device according to claim 1 , the coupling group being a SH group.
8. The electric device according to claim 1 , each of the plurality of nonconjugated organic compounds having a substitution group that is adopted to supply electric charges to the organic semiconductor film, the substitution group of one of the plurality of nonconjugated organic compounds being disposed at the opposite side of the coupling group of the one of the plurality of nonconjugated organic compounds.
9. The electric device according to claim 8 , a maximum thickness of the organic film being smaller than a length between the coupling group of the one of the plurality of nonconjugated organic compounds and the substitution group of the one of the plurality of nonconjugated organic compounds.
10. The electric device according to claim 1 , each of the plurality of nonconjugated organic compounds including carbons of which total numbers are 4 to 45.
11. The electric device according to claim 1 , the first electrode and the organic semiconductor film not directly contacting to each other by the organic film that is disposed between the first electrode and the organic semiconductor film and that separates the first electrode and the organic semiconductor film.
12. The electric device according to claim 1 , the first electrode including at least one of Au, Ag, Cu, and Pt.
13. An electric apparatus comprising the electric device according to claim 1 .
14. An method of manufacturing an electric device having a first and a second electrodes and an organic semiconductor film that is disposed between the first and the second electrodes, comprising:
forming an organic film at least on the first electrode, such that the organic film is disposed on at least a side surface of the first electrode, the organic film including a plurality of nonconjugated organic compounds, each of the plurality of nonconjugated organic compounds having a coupling group that is coupled with the first electrode; and
forming the organic semiconductor film over the organic film, wherein
a number of the plurality of nonconjugated organic compounds that is coupled to the surface of the first electrode is from 0.50×10 15 to 0.92×10 15 pieces/cm 2 .
15. The method of manufacturing an electric device according to claim 14 , further comprising:
cleaning at least the surface of the first electrode with oxygen plasma before the process of forming the organic film.
16. The method of manufacturing an electric device according to claim 14 , the process of forming the organic film including contacting at least the first electrode and a liquid material for 0.1 to 200.0 minutes to form the organic film at least on the first electrode, the liquid material including a plurality of nonconjugated organic compounds with a density of 0.01 to 10 mM.
17. An method of manufacturing an electric device having a first and a second electrodes and an organic semiconductor film that is disposed between the first and the second electrodes, comprising:
forming an organic film at least on the first electrode, such that the organic film is disposed on at least a side surface of the first electrode, the organic film including a plurality of nonconjugated organic compounds, each of the plurality of nonconjugated organic compounds having a coupling group that is coupled with the first electrode;
forming the organic semiconductor film over the organic film; and
cleaning at least the surface of the first electrode with oxygen plasma before the process of forming the organic film.