| Autor: |
Sahu Ayaskanta, Braga Daniele, Waser Oliver, Kang Moon Sung, Deng Donna, Norris David J. |
| Rok vydání: |
2014 |
| Zdroj: |
Nano Letters |
| DOI: |
10.1021/nl4041498 |
| Popis: |
Nanocrystals are known to alter the relative stability of bulk solid phases. Here we test the limits of this effect on Ag2Se nanocrystals a promising new electronic and infrared material. In the bulk Ag2Se exhibits a solid-solid phase transition to a superionic conducting phase at moderate temperatures. We map this phase transition as a function of size temperature and surface treatment in Ag2Se core only and core-shell nanocrystals. We show that the transition can be tuned not just below but also above the bulk phase transition temperature. This phase flexibility has implications for applications in optoelectronic and phase memory devices. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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