Patent ID: 11908945
Assignee: RICOH COMPANY, LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A coating liquid for forming a semiconductor oxide film comprising:
a Group A element, which is a preventer from generation of oxygen vacancies, and which is at least one selected from the group consisting of Zr, Hf, Ce, Si, and Ge;
a Group B element, which is a main constituting element of a bottom of a conduction band of the semiconductor oxide film, and which is at least one selected from the group consisting of Ti and Sn;
a Group C element, which is a dopant, and which is at least one selected from the group consisting of Group 5 elements, Group 6 elements, Group 7 elements, Group 8 elements, Group 9 elements, Group 10 elements, Group 15 elements, and Group 16 elements; and
a solvent,
wherein a valence of the Group A element is the same as that of the Group B element;
wherein the Group C element is at least one selected from the group consisting of V, Nb, Ta, Cr, Mo, W, Re, Ru, Os, Ir, Pt, Sb, Bi, Se, and Te,
wherein the coating liquid does not include a Group 1 element, a Group 2 element, a Group 3 element, a Group 11 element, a Group 12 element, and a Group 13 element, except that Ce of the Group 3 elements may be present, and
wherein a total number of atoms of the Group A element (NA) and a total number of atoms of the Group B element (NB) satisfy the following formula:

0.02≤[NA/NB]≤0.2.