Thermoelectric materials and thermoelectric conversion element
US6307143A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1999 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Oct 19, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N10/852
Abstract
Thermoelectric materials having a high performance index and thermoelectric elements are provided. The present thermoelectric materials are constituted by at least one element selected from the group consisting of Bi and Sb, at least one element selected from the group consisting of Te and Se, and, if necessary, at least one element selected from the group consisting of I, Cl, Hg, Br, Ag, and Cu. The long axis of each crystal grain of the thermoelectric material grows in the direction parallel to the pressing direction at the time of press formation, and the aspect ratio D/d of each crystal grain, which represents a ratio between the average crystal grain size along the long axis D to the average crystal grain size along the short axis d, is more than 1.5. The C-plane is oriented parallel to the pressing direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.