Synthesis of Polycrystalline Bi-Doped Snse by Mechanical Alloying and Hydrogen Reduction
In this study, Bi-doped SnSe was fabricated through the high energy ball milling and the hydrogen reduction of Bi2O3, and its thermoelectric properties were analyzed. The specimen with pure-Bi was fabricated as a control group and properties were compared. In the case of specimens with added Bi2O3,...
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Polish Academy of Sciences
2024-04-01
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| Series: | Archives of Metallurgy and Materials |
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| Online Access: | https://journals.pan.pl/Content/130928/PDF/AMM-2024-1-26-Jongmin%20Byun.pdf |
| _version_ | 1797211803265007616 |
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| author | Jin Kwang Jang Jaeyun Moon Jongmin Byun |
| author_facet | Jin Kwang Jang Jaeyun Moon Jongmin Byun |
| author_sort | Jin Kwang Jang |
| collection | DOAJ |
| description | In this study, Bi-doped SnSe was fabricated through the high energy ball milling and the hydrogen reduction of Bi2O3, and its thermoelectric properties were analyzed. The specimen with pure-Bi was fabricated as a control group and properties were compared. In the case of specimens with added Bi2O3, when sintering was performed in a hydrogen atmosphere, Bi2O3 with a high melting point was reduced to Bi with a relatively low melting point. At this time, because of the appearance of the liquid phase, the orientation of the (400) plane increased, and the density was improved. As a result, the change of SnSe to n-type was confirmed in the temperature range of 300 K - 773 K due to Bi doping. Additionally, when Bi2O3 was used instead of pure-Bi, the thermal conductivity, which is inversely proportional to the figure of merit, decreased, and the electrical conductivity increased, resulting in an improvement in the figure of merit. |
| first_indexed | 2024-04-24T10:32:17Z |
| format | Article |
| id | doaj.art-4ebe29fd10164d83aa7d0c3c4f7a2a2d |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-04-24T10:32:17Z |
| publishDate | 2024-04-01 |
| publisher | Polish Academy of Sciences |
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| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-4ebe29fd10164d83aa7d0c3c4f7a2a2d2024-04-12T15:34:22ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092024-04-01vol. 69No 1129133https://doi.org/10.24425/amm.2024.147800Synthesis of Polycrystalline Bi-Doped Snse by Mechanical Alloying and Hydrogen ReductionJin Kwang Jang0https://orcid.org/0009-0008-9740-6053Jaeyun Moon1https://orcid.org/0000-0003-0128-4108Jongmin Byun2https://orcid.org/0000-0002-0354-237XSeoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of KoreaUniversity of Nevada, Las Vegas, Department of Mechanical Engineering, 4505 S. Maryland Pkwy Las Vegas, Nv 89154, United StatesSeoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul 01811, Republic of KoreaIn this study, Bi-doped SnSe was fabricated through the high energy ball milling and the hydrogen reduction of Bi2O3, and its thermoelectric properties were analyzed. The specimen with pure-Bi was fabricated as a control group and properties were compared. In the case of specimens with added Bi2O3, when sintering was performed in a hydrogen atmosphere, Bi2O3 with a high melting point was reduced to Bi with a relatively low melting point. At this time, because of the appearance of the liquid phase, the orientation of the (400) plane increased, and the density was improved. As a result, the change of SnSe to n-type was confirmed in the temperature range of 300 K - 773 K due to Bi doping. Additionally, when Bi2O3 was used instead of pure-Bi, the thermal conductivity, which is inversely proportional to the figure of merit, decreased, and the electrical conductivity increased, resulting in an improvement in the figure of merit.https://journals.pan.pl/Content/130928/PDF/AMM-2024-1-26-Jongmin%20Byun.pdfsnsethermoelectric propertieshydrogen reductionn-typebi2o3 |
| spellingShingle | Jin Kwang Jang Jaeyun Moon Jongmin Byun Synthesis of Polycrystalline Bi-Doped Snse by Mechanical Alloying and Hydrogen Reduction Archives of Metallurgy and Materials snse thermoelectric properties hydrogen reduction n-type bi2o3 |
| title | Synthesis of Polycrystalline Bi-Doped Snse by Mechanical Alloying and Hydrogen Reduction |
| title_full | Synthesis of Polycrystalline Bi-Doped Snse by Mechanical Alloying and Hydrogen Reduction |
| title_fullStr | Synthesis of Polycrystalline Bi-Doped Snse by Mechanical Alloying and Hydrogen Reduction |
| title_full_unstemmed | Synthesis of Polycrystalline Bi-Doped Snse by Mechanical Alloying and Hydrogen Reduction |
| title_short | Synthesis of Polycrystalline Bi-Doped Snse by Mechanical Alloying and Hydrogen Reduction |
| title_sort | synthesis of polycrystalline bi doped snse by mechanical alloying and hydrogen reduction |
| topic | snse thermoelectric properties hydrogen reduction n-type bi2o3 |
| url | https://journals.pan.pl/Content/130928/PDF/AMM-2024-1-26-Jongmin%20Byun.pdf |
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