Phase Control of Sulfide Nanocrystals from Thiourea-Mediated Solution
Journal of Alloys and Compounds(2024)
摘要
Nanomaterials that feature multiphase dictated by corresponding thermodynamic or kinetic conditions demonstrate great diversity for the exploration of novel properties like photovoltaics or thermoelectricity. To access a specific phase, especially those with a metastable nature, requires effective means to harness the determining parameters ruled by the intrinsic phase diagram. In this report, we develop a solvothermal model that is able to accurately tune the oxidation state of the metal ions in a sulfide system Cu-Sb-S, which in turn effectively regulates the phase evolution process to achieve the expected product (nanoparticles or film) in a phase pure form at a low temperature. The systematic in-situ and control investigations on different transient states illustrate the function of specific chemical groups in thiourea. Such an approach represents a general engineering method that can be readily employed in different systems, such as the Cu-Fe-S system. Furthermore, this one-pot synthetic strategy is capable of fine-tuning mix-phase sulfide nanocomposites as well. Therefore, it provides a platform to research sulfide’s phase-tunable properties, performance, and applications.
更多查看译文
关键词
Sulfide,Nanoparticles,Phase control,Solution-processable crystal-growth approach,Metastable phase
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要