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Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

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Published on: September 28, 2016

Creating Single-Crystalline β-CaSiO₃ for High-Performance Electronic Packaging Substrate.

Qingchao Jia¹, Wenzhi Wang¹, Hujun Zhang¹

¹School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China.

Advanced Materials (Deerfield Beach, Fla.)

|December 23, 2024

Summary

This summary is machine-generated.

Researchers developed high-performance single-crystalline β-CaSiO₃ glass-ceramics for electronic packaging. This material achieves high strength and a low dielectric constant by optimizing Al³⁺ doping and sintering conditions.

Keywords:

LTCC substrates glass ceramics high flexural strength low dielectric single crystals

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Area of Science:

Materials Science
Ceramics Engineering
Solid State Chemistry

Background:

β-CaSiO₃ based glass-ceramics are crucial for electronic packaging.
Achieving high strength and low dielectric constant simultaneously in CaSiO₃ substrates is challenging due to their polycrystalline nature.

Purpose of the Study:

To synthesize single-crystalline β-CaSiO₃ for high-performance glass-ceramic substrates.
To overcome the limitations of polycrystalline CaSiO₃ by developing a new fabrication strategy.

Main Methods:

Introduced Al³⁺ into the CaO-B₂O₃-SiO₂ glass system.
Optimized sintering conditions to control crystal growth and phase transformation.
Investigated the transformation of nano α-CaSiO₃ to micrometer-sized single crystal β-CaSiO₃.

Main Results:

Synthesized single-crystalline β-CaSiO₃ with a layered structure.
Achieved a low dielectric constant of 4.04 and low dielectric loss of 3.15 × 10⁻³ at 15 GHz.
Obtained a high flexural strength of 256 MPa.

Conclusions:

Al³⁺ doping and controlled sintering enable the formation of single-crystalline β-CaSiO₃.
The developed glass-ceramics exhibit excellent dielectric and mechanical properties.
This approach offers a new strategy for high-performance single-crystalline glass-ceramics in electronic packaging.