Vapor-liquid-solid synthesis of Ag2Te using chemical vapor deposition method
- 관리정보기술 faculty
- 등재 SCIE, SCOPUS
- 발행기관 American Institute of Physics Inc.
- 발행년도 2024
- URI http://www.dcollection.net/handler/ewha/000000231644
- 본문언어 영어
- Published As https://doi.org/10.1063/5.0187083
초록/요약
Silver telluride, Ag2Te, has been selectively synthesized by conventional chemical vapor deposition (CVD) via the vapor-liquid-solid growth mechanism. The pre-deposited Ag film on the SiO2/Si substrate was chemically reacted with vaporized Te atoms and transformed into liquid-phase Ag-Te during the CVD process. The appropriate supply of Te vapor to the Ag film influenced the stoichiometry of Ag-Te compounds, and the formation of stoichiometric Ag-Te compounds was well-explained by the phase diagram of the Ag-Te system. We found that Ag2Te was grown in the liquid of Ag-Te under the Te-poor condition, while Ag5Te3 and Te were simultaneously solidified under the Te-rich condition. The high-temperature synthesis of Ag2Te showed higher crystallinity and better stoichiometry than the low-temperature synthesis. This study demonstrates that Ag2Te can be selectively synthesized by conventional CVD via delicate control over the phases of the complex Ag-Te system. © 2024 Author(s).
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