Improvement of thermoelectric performance of flexible compound Ag2S0.55Se0.45 by means of partial V-substitution for Ag
The effects of the partial V-substitution for Ag on the thermoelectric (TE) properties are investigated for a flexible semiconducting compound Ag2S0.55Se0.45. Density functional theory calculations predict that such a partial V-substitution constructively modifies the electronic structure near the b...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2023-12-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0171888 |
| _version_ | 1827391503270412288 |
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| author | Kosuke Sato Saurabh Singh Itsuki Yamazaki Keisuke Hirata Artoni Kevin R. Ang Masaharu Matsunami Tsunehiro Takeuchi |
| author_facet | Kosuke Sato Saurabh Singh Itsuki Yamazaki Keisuke Hirata Artoni Kevin R. Ang Masaharu Matsunami Tsunehiro Takeuchi |
| author_sort | Kosuke Sato |
| collection | DOAJ |
| description | The effects of the partial V-substitution for Ag on the thermoelectric (TE) properties are investigated for a flexible semiconducting compound Ag2S0.55Se0.45. Density functional theory calculations predict that such a partial V-substitution constructively modifies the electronic structure near the bottom of the conduction band to improve the TE performance. The synthesized Ag1.97V0.03S0.55Se0.45 is found to possess a TE dimensionless figure-of-merit (ZT) of 0.71 at 350 K with maintaining its flexible nature. This ZT value is relatively high in comparison with those reported for flexible TE materials below 360 K. The increase in the ZT value is caused by the enhanced absolute value of the Seebeck coefficient with less significant variation in electrical resistivity. The high ZT value with the flexible nature naturally allows us to employ the Ag1.97V0.03S0.55Se0.45 as a component of flexible TE generators. |
| first_indexed | 2024-03-08T17:12:59Z |
| format | Article |
| id | doaj.art-891a3a79527c49ccb189a87e9e4e86b3 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-03-08T17:12:59Z |
| publishDate | 2023-12-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-891a3a79527c49ccb189a87e9e4e86b32024-01-03T19:51:07ZengAIP Publishing LLCAIP Advances2158-32262023-12-011312125206125206-910.1063/5.0171888Improvement of thermoelectric performance of flexible compound Ag2S0.55Se0.45 by means of partial V-substitution for AgKosuke Sato0Saurabh Singh1Itsuki Yamazaki2Keisuke Hirata3Artoni Kevin R. Ang4Masaharu Matsunami5Tsunehiro Takeuchi6Toyota Technological Institute, Nagoya, Aichi 468-8511, JapanToyota Technological Institute, Nagoya, Aichi 468-8511, JapanToyota Technological Institute, Nagoya, Aichi 468-8511, JapanToyota Technological Institute, Nagoya, Aichi 468-8511, JapanToyota Technological Institute, Nagoya, Aichi 468-8511, JapanToyota Technological Institute, Nagoya, Aichi 468-8511, JapanToyota Technological Institute, Nagoya, Aichi 468-8511, JapanThe effects of the partial V-substitution for Ag on the thermoelectric (TE) properties are investigated for a flexible semiconducting compound Ag2S0.55Se0.45. Density functional theory calculations predict that such a partial V-substitution constructively modifies the electronic structure near the bottom of the conduction band to improve the TE performance. The synthesized Ag1.97V0.03S0.55Se0.45 is found to possess a TE dimensionless figure-of-merit (ZT) of 0.71 at 350 K with maintaining its flexible nature. This ZT value is relatively high in comparison with those reported for flexible TE materials below 360 K. The increase in the ZT value is caused by the enhanced absolute value of the Seebeck coefficient with less significant variation in electrical resistivity. The high ZT value with the flexible nature naturally allows us to employ the Ag1.97V0.03S0.55Se0.45 as a component of flexible TE generators.http://dx.doi.org/10.1063/5.0171888 |
| spellingShingle | Kosuke Sato Saurabh Singh Itsuki Yamazaki Keisuke Hirata Artoni Kevin R. Ang Masaharu Matsunami Tsunehiro Takeuchi Improvement of thermoelectric performance of flexible compound Ag2S0.55Se0.45 by means of partial V-substitution for Ag AIP Advances |
| title | Improvement of thermoelectric performance of flexible compound Ag2S0.55Se0.45 by means of partial V-substitution for Ag |
| title_full | Improvement of thermoelectric performance of flexible compound Ag2S0.55Se0.45 by means of partial V-substitution for Ag |
| title_fullStr | Improvement of thermoelectric performance of flexible compound Ag2S0.55Se0.45 by means of partial V-substitution for Ag |
| title_full_unstemmed | Improvement of thermoelectric performance of flexible compound Ag2S0.55Se0.45 by means of partial V-substitution for Ag |
| title_short | Improvement of thermoelectric performance of flexible compound Ag2S0.55Se0.45 by means of partial V-substitution for Ag |
| title_sort | improvement of thermoelectric performance of flexible compound ag2s0 55se0 45 by means of partial v substitution for ag |
| url | http://dx.doi.org/10.1063/5.0171888 |
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