Academic Journal
Controlling compositional homogeneity and crystalline orientation in Bi0.8Sb0.2 thermoelectric thin films
| العنوان: | Controlling compositional homogeneity and crystalline orientation in Bi0.8Sb0.2 thermoelectric thin films |
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| المؤلفون: | C. Rochford, D. L. Medlin, K. J. Erickson, M. P. Siegal |
| المصدر: | APL Materials, Vol 3, Iss 12, Pp 126106-126106-6 (2015) |
| بيانات النشر: | AIP Publishing LLC, 2015. |
| سنة النشر: | 2015 |
| المجموعة: | LCC:Biotechnology LCC:Physics |
| مصطلحات موضوعية: | Biotechnology, TP248.13-248.65, Physics, QC1-999 |
| الوصف: | Compositional-homogeneity and crystalline-orientation are necessary attributes to achieve high thermoelectric performance in Bi1−xSbx thin films. Following deposition in vacuum, and upon air exposure, we find that 50%–95% of the Sb in 100-nm thick films segregates to form a nanocrystalline Sb2O3 surface layer, leaving the film bulk as Bi-metal. However, we demonstrate that a thin SiN capping layer deposited prior to air exposure prevents Sb-segregation, preserving a uniform film composition. Furthermore, the capping layer enables annealing in forming gas to improve crystalline orientations along the preferred trigonal axis, beneficially reducing electrical resistivity. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2166-532X |
| Relation: | https://doaj.org/toc/2166-532X |
| DOI: | 10.1063/1.4937894 |
| URL الوصول: | https://doaj.org/article/6a2a73e22d034a8bb3528a2199da55cb |
| رقم الانضمام: | edsdoj.6a2a73e22d034a8bb3528a2199da55cb |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 2166532X |
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| DOI: | 10.1063/1.4937894 |