Compound Semiconductor

Compound semiconductors (such as GaN, SiC, VCSEL, LED, etc.) possess high electron mobility, high voltage resistance, high-frequency operation, and thermal resistance characteristics, and are widely used in automotive power modules, high-efficiency power conversion (SMPS / fast charging), laser light sources, optical communication, and sensors.
Unlike silicon (Si), compound materials themselves have characteristics such as lattice mismatch, high defect density, and large differences in thermal expansion coefficients. These inherent conditions make their process control, interface quality, and long-term reliability more sensitive.

In the processes of crystal growth, epitaxial deposition, etching, metal contact formation, and packaging, crystal structure defects, interface quality between conductive layers and blocking layers, contact resistance stability, and thermal management capabilities will directly affect component efficiency, power density, and lifespan. Therefore, the mass production capability of compound semiconductors depends on whether it is possible to accurately grasp the material and interface states and establish measurable and traceable reliability verification methods.

MA-tek assists customers in the field of compound semiconductors to evaluate crystal structure quality (defect density and orientation distribution), material diffusion behavior, electrical conduction interfaces, packaging thermal stress, and long-term reliability. Through high-resolution structural analysis, electrical behavior correspondence, and accelerated lifetime testing, it can confirm component performance degradation, turning points, and the fundamental mechanisms leading to failure, as well as provide directions for process and material adjustments.