CRYSTALS GROWTH AND REFINEMENT OF THE Cu3SbSe3 CRYSTAL STRUCTURE
The technology of thermoelectric converters, based on the Peltier and Seebeck effects, provides a reversible process of convert in thermal and electrical energy. This opens up prospects for the creation of both thermoelectric coolers and thermoelectric generators. The most widely studied class of th...
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V.I.Vernadsky Institute of General and Inorganic Chemistry
2022
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oai:ojs2.1444248.nisspano.web.hosting-test.net:article-4792022-11-17T14:49:57Z CRYSTALS GROWTH AND REFINEMENT OF THE Cu3SbSe3 CRYSTAL STRUCTURE Chorba , Onika Filep , Mykhailo Pogodin , Artem Malakhovska , Tetyana Sabov, Marjan selenides, single crystals, crystal structure. The technology of thermoelectric converters, based on the Peltier and Seebeck effects, provides a reversible process of convert in thermal and electrical energy. This opens up prospects for the creation of both thermoelectric coolers and thermoelectric generators. The most widely studied class of thermoelectric materials are complex chalcogenides. In recent years, copper-containing chalcogenides have been actively researched as new highly effective and ecologically friendly thermoelectric materials. The Cu–Sb–Se ternary system are characterized by the existence of three phases CuSbSe2, Cu3SbSe3 and Cu3SbSe4. Among these compounds, the Cu3SbSe3 phase is characterized by the lowest thermal conductivity. The synthesis of the Cu3SbSe3 polycrystalline alloy was carried out using high purity elementally components. The synthesis was carried out in vacuumed quartz ampoules by a one-temperature, two-stage process. Taking into account the incongruent melting of Cu3SbSe3, the single crystal growth was carried out by the method of vertical zone crystallization from a solution-melt in vacuumed conical quartz ampoules. As a result, the grown single crystal was dark gray color with metallic luster, without defects with length ~ 40 mm and diameter 12 mm. Obtained single crystalline sample of Cu3SbSe3 was investigated by DTA method. The heating curve contains one endothermic effect at 530°С, which corresponds to the process of peritectic decomposition of Cu3SbSe3. The effect corresponding to the melting of all components in the quartz container is not fixed. However, it is clearly visible on the cooling curve at 712 °С. The exothermic effect of crystallization of Cu3SbSe3 (503 °С) is clear and sharp and is observed with supercooling ΔТ = 27 °С. To confirm the single crystallinity of grown Cu3SbSe3 sample, an XRD analysis of the natural surface was carried out. The diffraction pattern shows two clear and narrow diffraction peaks corresponding to the (200) and (400) planes at angles of 22.27° and 45.42°, respectively. The crystal structure of the obtained Cu3SbSe3 single crystal was investigated by XRD analysis using the Rietveld full-profile refinement method. Established that Cu3SbSe3 crystallize in orthorhombic crystal system, SGPnma with lattice parameters: a = 7.9668 Å, b = 10.65870 Å, c = 6.8207 Å, Z = 4. V.I.Vernadsky Institute of General and Inorganic Chemistry 2022-10-28 Article Article Inorganic Chemistry Неорганическая химия Неорганічна хімія application/pdf https://ucj.org.ua/index.php/journal/article/view/479 10.33609/2708-129X.88.09.2022.25-33 Ukrainian Chemistry Journal; Vol 88 No 9 (2022): Ukrainian Chemistry Journal; 25-33 Украинский химический журнал; Том 88 № 9 (2022): Ukrainian Chemistry Journal; 25-33 Український хімічний журнал; Том 88 № 9 (2022): Український хімічний журнал; 25-33 2708-129X 2708-1281 en https://ucj.org.ua/index.php/journal/article/view/479/246 |
| institution |
Ukrainian Chemistry Journal |
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| datestamp_date |
2022-11-17T14:49:57Z |
| collection |
OJS |
| language |
English |
| topic_facet |
selenides single crystals crystal structure. |
| format |
Article |
| author |
Chorba , Onika Filep , Mykhailo Pogodin , Artem Malakhovska , Tetyana Sabov, Marjan |
| spellingShingle |
Chorba , Onika Filep , Mykhailo Pogodin , Artem Malakhovska , Tetyana Sabov, Marjan CRYSTALS GROWTH AND REFINEMENT OF THE Cu3SbSe3 CRYSTAL STRUCTURE |
| author_facet |
Chorba , Onika Filep , Mykhailo Pogodin , Artem Malakhovska , Tetyana Sabov, Marjan |
| author_sort |
Chorba , Onika |
| title |
CRYSTALS GROWTH AND REFINEMENT OF THE Cu3SbSe3 CRYSTAL STRUCTURE |
| title_short |
CRYSTALS GROWTH AND REFINEMENT OF THE Cu3SbSe3 CRYSTAL STRUCTURE |
| title_full |
CRYSTALS GROWTH AND REFINEMENT OF THE Cu3SbSe3 CRYSTAL STRUCTURE |
| title_fullStr |
CRYSTALS GROWTH AND REFINEMENT OF THE Cu3SbSe3 CRYSTAL STRUCTURE |
| title_full_unstemmed |
CRYSTALS GROWTH AND REFINEMENT OF THE Cu3SbSe3 CRYSTAL STRUCTURE |
| title_sort |
crystals growth and refinement of the cu3sbse3 crystal structure |
| description |
The technology of thermoelectric converters, based on the Peltier and Seebeck effects, provides a reversible process of convert in thermal and electrical energy. This opens up prospects for the creation of both thermoelectric coolers and thermoelectric generators. The most widely studied class of thermoelectric materials are complex chalcogenides. In recent years, copper-containing chalcogenides have been actively researched as new highly effective and ecologically friendly thermoelectric materials. The Cu–Sb–Se ternary system are characterized by the existence of three phases CuSbSe2, Cu3SbSe3 and Cu3SbSe4. Among these compounds, the Cu3SbSe3 phase is characterized by the lowest thermal conductivity.
The synthesis of the Cu3SbSe3 polycrystalline alloy was carried out using high purity elementally components. The synthesis was carried out in vacuumed quartz ampoules by a one-temperature, two-stage process. Taking into account the incongruent melting of Cu3SbSe3, the single crystal growth was carried out by the method of vertical zone crystallization from a solution-melt in vacuumed conical quartz ampoules. As a result, the grown single crystal was dark gray color with metallic luster, without defects with length ~ 40 mm and diameter 12 mm.
Obtained single crystalline sample of Cu3SbSe3 was investigated by DTA method. The heating curve contains one endothermic effect at 530°С, which corresponds to the process of peritectic decomposition of Cu3SbSe3. The effect corresponding to the melting of all components in the quartz container is not fixed. However, it is clearly visible on the cooling curve at 712 °С. The exothermic effect of crystallization of Cu3SbSe3 (503 °С) is clear and sharp and is observed with supercooling ΔТ = 27 °С. To confirm the single crystallinity of grown Cu3SbSe3 sample, an XRD analysis of the natural surface was carried out. The diffraction pattern shows two clear and narrow diffraction peaks corresponding to the (200) and (400) planes at angles of 22.27° and 45.42°, respectively. The crystal structure of the obtained Cu3SbSe3 single crystal was investigated by XRD analysis using the Rietveld full-profile refinement method. Established that Cu3SbSe3 crystallize in orthorhombic crystal system, SGPnma with lattice parameters: a = 7.9668 Å, b = 10.65870 Å, c = 6.8207 Å, Z = 4. |
| publisher |
V.I.Vernadsky Institute of General and Inorganic Chemistry |
| publishDate |
2022 |
| url |
https://ucj.org.ua/index.php/journal/article/view/479 |
| work_keys_str_mv |
AT chorbaonika crystalsgrowthandrefinementofthecu3sbse3crystalstructure AT filepmykhailo crystalsgrowthandrefinementofthecu3sbse3crystalstructure AT pogodinartem crystalsgrowthandrefinementofthecu3sbse3crystalstructure AT malakhovskatetyana crystalsgrowthandrefinementofthecu3sbse3crystalstructure AT sabovmarjan crystalsgrowthandrefinementofthecu3sbse3crystalstructure |
| first_indexed |
2025-09-24T17:43:46Z |
| last_indexed |
2025-09-24T17:43:46Z |
| _version_ |
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