| Title: | Fast transformation of PbTe using a multiphase mixture of precursors : first insights |
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| Authors: | ID Rojas-Chávez, Hugo (Author)
ID Daneu, Nina, Institut "Jožef Stefan" (Author)
ID Juárez-García, J. Manuel (Author) |
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| Files: |  URL - Source URL, visit https://www.mdpi.com/2412-382X/9/3/24
 PDF - Presentation file, download (2,52 MB)
MD5: 2E3B839D17760B3D227B617186FCAEB5
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | For the first time, a mixture of PbTe and Pb- and Te-oxides coated with carbon, under electron beam irradiation (EBI), was transformed into quantum dots, nanocrystals, nanoparticles and grains of PbTe with a sintered appearance. A small portion of non-stoichiometric phases was also obtained. By selecting conditions that favor the instantaneous transformation, the Gibbs free energy barrier is lowered for obtaining different PbTe structures. The driving force associated with the high-energy milling requires 4 h of processing time to reach a complete transformation, while a high-energy source kinetically affects precursor surfaces to cause an abrupt global chemical transformation instantly. Importantly, the size of the PbTe structures increases as they approach the irradiation point, implying a growth process that is affected by the local temperature reached during the EBI. Imaging after the EBI process revealed morphological variations in PbTe, which can be attractive for use in thermoelectric materials. The results of this study provide the first insights into electron-beam-induced reactions using a multiphase mixture of precursors. Therefore, it is believed that this proposal can also be applied to obtain other binary semiconductor structures, even ternary ones. |
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| Keywords: | semiconductor, multiphase mixture of precursors, rate of transformation |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 29.05.2025 |
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| Article acceptance date: | 04.07.2025 |
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| Publication date: | 11.07.2025 |
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| Publisher: | MDPI |
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| Year of publishing: | 2025 |
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| Number of pages: | 1-12 str. |
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| Numbering: | Vol. 9, iss. 3 |
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| Source: | Švica |
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| PID: | 20.500.12556/DiRROS-22992  |
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| UDC: | 53 |
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| ISSN on article: | 2412-382X |
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| DOI: | 10.3390/qubs9030024 |
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| COBISS.SI-ID: | 242463235 |
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| Copyright: | © 2025 by the authors. |
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| Note: | Nasl. z nasl. zaslona;
Soavtorica Nina Daneu;
Opis vira z dne 14. 7. 2025;
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| Publication date in DiRROS: | 15.07.2025 |
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| Views: | 344 |
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| Downloads: | 240 |
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