结构非晶化对MIL-100金属有机骨架材料宽带介电行为的影响
Broadband dielectric behavior of MIL-100 metal-organic framework as a function of structural amorphization
摘要：
现代电子器件的性能与多层互连相关联，这鼓励了低k互连的发展。本文研究了MIL-100（Fe）和Basolite F300金属有机骨架材料（MOF）从晶态到非晶态的相变对介电、光学和电学性能的影响，并对MIL-100（Fe）和Basolite F300金属有机骨架材料（MOF）的介电、光学和电学性能进行了表征。（4-1.5 MHz）和红外（1.2-150 THz）频率范围，这对于微电子学、红外光学传感器和高频电信是重要的。非晶化对宽带介电响应的影响基于以下建立：（1）在MHz区域中，市售的非晶Basolite F300与机械化学合成的结晶MIL-100的介电特性的比较。(2)通过跟踪MIL-100结构在远红外（声子）和中红外区域的振动模式的频率偏移。我们发现，各种参数，如造粒压力，温度，频率，密度和非晶化程度极大地影响框架的介电性能。我们还研究了温度（20-100 °C）对MHz区域内的电和介电响应的影响，这对所有电子器件都至关重要。
英文摘要：
The performance of modern electronics is associated with the multi-layered interconnects, encouraging the development of a low-k dielectrics. Herein, we studied the effects of phase transition from crystalline to amorphous on dielectric, optical and electrical properties of MIL-100 (Fe) and Basolite F300 metal-organic framework (MOF) obtained using different synthesis techniques in both the radio (4-1.5 MHz) and infrared (1.2-150 THz) frequency regimes, which are important for the microelectronics, infrared optical sensors, and high-frequency telecommunications. The impact of amorphization on broadband dielectric response was established based on: (1) The comparison in the dielectric characteristics of a commercially available amorphous Basolite F300 versus a mechanochemically synthesized crystalline MIL-100 in the MHz region. (2) By tracking the frequency shifts in the vibrational modes of MIL-100 structure in the far-IR (phonons) and mid-IR regions. We showed that various parameters such as pelleting pressure, temperature, frequency, density, and degree of amorphization greatly affect the dielectric properties of the framework. We also investigated the influence of temperature (20-100 °C) on the electric and dielectric response in the MHz region, crucial for all electronic devices.
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