Capacitor, electric circuit, circuit board, and apparatus
View Patent ↗A capacitor includes a first electrode, a second electrode, and a dielectric. The dielectric is disposed between the first electrode and the second electrode. The dielectric includes a compound having an inverted perovskite structure. The inverted perovskite structure of this compound has a portion in which a cation is present at each vertex of corner-sharing octahedra and an anion is present at a center of each of the corner-sharing octahedra.
1 . A capacitor comprising:
a first electrode;
a second electrode; and
a dielectric disposed between the first electrode and the second electrode, wherein
the dielectric includes a compound having an inverted perovskite structure, and
the inverted perovskite structure has a portion in which a cation is present at each vertex of corner-sharing octahedra and an anion is present at a center of each of the corner-sharing octahedra.
2 . The capacitor according to claim 1 , wherein
the compound includes an ion of an element in at least one group selected from the group consisting of Group 13, Group 14, and Group 15.
3 . The capacitor according to claim 2 , wherein
the ion has a lone pair.
4 . The capacitor according to claim 1 , wherein
the compound includes at least one selected from the group consisting of In + , Tl + , Ge 2+ , Sn 2+ , Pb 2+ , Sb 3+ , and Bi 3+ .
5 . The capacitor according to claim 1 , wherein
the compound has a composition represented by DE 2 Q 5 , where D and E are each a cation, and Q is an anion.
6 . The capacitor according to claim 1 , wherein
the compound has a composition represented by DE 2 Q 4 R, where D and E are each a cation, and Q and R are each an anion.
7 . The capacitor according to claim 1 , wherein
the compound has a composition represented by DEGQ 5 , where D, E, and G are each a cation, and Q is an anion.
8 . The capacitor according to claim 1 , wherein
the compound has a composition represented by DEGQ 4 R, where D, E, and G are each a cation, and Q and R are each an anion.
9 . The capacitor according to claim 1 , wherein
the compound has a composition represented by DEG 4 Q 10 , where D, E, and G are each a cation, and Q is an anion.
10 . The capacitor according to claim 1 , wherein
the compound has a composition represented by DEG 4 Q 8 R 2 , where D, E, and G are each a cation, and Q and R are each an anion.
11 . The capacitor according to claim 1 , wherein
the compound has a composition represented by D 3 EQ 5 , where D and E are each a cation, and Q is an anion.
12 . The capacitor according to claim 1 , wherein
the compound has a composition represented by D 3 EQ 4 R, where D and E are each a cation, and Q and R are each an anion.
13 . The capacitor according to claim 1 , wherein
the compound has a composition represented by DE 2 GQ 5 , where D, E, and G are each a cation, and Q is an anion.
14 . The capacitor according to claim 1 , wherein
the compound has a composition represented by D 6 EQ 10 , where D and E are each a cation, and Q is an anion.
15 . The capacitor according to claim 1 , wherein
the compound has a composition represented by D 6 EQ 8 R 2 , where D and E are each a cation, and Q and R are each an anion.
16 . The capacitor according to claim 1 , wherein
the compound has a composition represented by D 2 E 4 GQ 5 , where D, E, and G are each a cation, and Q is an anion.
17 . The capacitor according to claim 1 , wherein
the compound has a composition represented by DE 2 GQ 4 R, where D, E, and G are each a cation, and Q and R are each an anion.
18 . The capacitor according to claim 1 , wherein
the compound has a composition represented by D 2 E 4 GQ 8 R 2 , where D, E, and G are each a cation, and Q and R are each an anion.
19 . The capacitor according to claim 1 , wherein
the compound has a composition represented by D 2 E 4 Q 7 , where D and E are each a cation, and Q is an anion.
20 . An electrical circuit comprising the capacitor according to claim 1 .
21 . A circuit board comprising the capacitor according to claim 1 .
22 . An apparatus comprising the capacitor according to claim 1 .