Substrate preparation methods for improved synthesis of Bi2Se3 films grown on sapphire by molecular beam epitaxy
Bi2Se3 thin films have grown in popularity as three-dimensional topological insulators with a host of potential applications. While the films themselves have been widely researched, improvements derived from better substrate preparation have lagged. In this study, investigations into the preparation of c-plane sapphire (c-sapphire) substrates and the influence on film quality were done. Analysis on the effects of substrate pretreat by ultra-high vacuum annealing of the substrates, the use of Nano-strip® as an etchant, and high temperature in air anneal of c-sapphire to form a terraced morphology on Bi2Se3 thin film growth were done for this study.
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| Work Title | Substrate preparation methods for improved synthesis of Bi2Se3 films grown on sapphire by molecular beam epitaxy |
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| License | CC BY-NC-ND 4.0 (Attribution-NonCommercial-NoDerivatives) |
| Work Type | Article |
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| Publication Date | April 24, 2025 |
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| Deposited | April 24, 2025 |
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