Carrier density control and enhanced thermoelectric performance of Bi and Cu co-doped GeTe
Thermoelectric energy conversion is one of the most important and desirable functions of materials, because the ability to recycle a part of the energy wasted as heat back to useful electric energy significantly contributes to a sustainable soc...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2017-05-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/1.4983404 |
| _version_ | 1819057041908432896 |
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| author | S. Shimano Y. Tokura Y. Taguchi |
| author_facet | S. Shimano Y. Tokura Y. Taguchi |
| author_sort | S. Shimano |
| collection | DOAJ |
| description | Thermoelectric energy
conversion is one of the most important and desirable functions of
materials,
because the ability to recycle a part of the energy wasted as heat back to useful electric
energy
significantly contributes to a sustainable society in future. For practical applications
of thermoelectric
materials,
sufficiently high conversion efficiency is required over a wide range of temperature. It
is also desirable that the materials are composed of non-toxic elements from an environmental
perspective. In this paper, we report the successful control of the hole-type charge
carrier density in GeTe-based materials by co-doping Bi and Cu, and the resultant improvement in the
thermoelectric
figure of merit over a wide range of temperature from room temperature to around 800 K,
especially below 500 K, compared to those of previously reported analogous materials, thereby
demonstrating the potential of GeTe-based materials for practical applications. |
| first_indexed | 2024-12-21T13:33:00Z |
| format | Article |
| id | doaj.art-3fd875f121d04d39a53cf559068c9d5b |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-12-21T13:33:00Z |
| publishDate | 2017-05-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-3fd875f121d04d39a53cf559068c9d5b2022-12-21T19:02:15ZengAIP Publishing LLCAPL Materials2166-532X2017-05-0155056103056103-610.1063/1.4983404006705APMCarrier density control and enhanced thermoelectric performance of Bi and Cu co-doped GeTeS. Shimano0Y. Tokura1Y. Taguchi2RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, JapanRIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, JapanRIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, JapanThermoelectric energy conversion is one of the most important and desirable functions of materials, because the ability to recycle a part of the energy wasted as heat back to useful electric energy significantly contributes to a sustainable society in future. For practical applications of thermoelectric materials, sufficiently high conversion efficiency is required over a wide range of temperature. It is also desirable that the materials are composed of non-toxic elements from an environmental perspective. In this paper, we report the successful control of the hole-type charge carrier density in GeTe-based materials by co-doping Bi and Cu, and the resultant improvement in the thermoelectric figure of merit over a wide range of temperature from room temperature to around 800 K, especially below 500 K, compared to those of previously reported analogous materials, thereby demonstrating the potential of GeTe-based materials for practical applications.http://dx.doi.org/10.1063/1.4983404 |
| spellingShingle | S. Shimano Y. Tokura Y. Taguchi Carrier density control and enhanced thermoelectric performance of Bi and Cu co-doped GeTe APL Materials |
| title | Carrier density control and enhanced thermoelectric performance of Bi and Cu
co-doped GeTe |
| title_full | Carrier density control and enhanced thermoelectric performance of Bi and Cu
co-doped GeTe |
| title_fullStr | Carrier density control and enhanced thermoelectric performance of Bi and Cu
co-doped GeTe |
| title_full_unstemmed | Carrier density control and enhanced thermoelectric performance of Bi and Cu
co-doped GeTe |
| title_short | Carrier density control and enhanced thermoelectric performance of Bi and Cu
co-doped GeTe |
| title_sort | carrier density control and enhanced thermoelectric performance of bi and cu co doped gete |
| url | http://dx.doi.org/10.1063/1.4983404 |
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