In-depth engineering articles on substrate selection, process optimization, and emerging semiconductor fabrication technologies. Written by our process engineering team.
A comparative analysis of silicon, SOI, and glass substrates for accelerometer and gyroscope fabrication. Covers DRIE compatibility, stress management, wafer bonding requirements, and cost-performance trade-offs for consumer, automotive, and aerospace-grade inertial sensors.
Practical guide to Bosch process tuning for TSV applications. Covers etch rate vs selectivity trade-offs, scallop control strategies, aspect ratio dependent etching (ARDE) mitigation, and process window optimization for 10:1 and higher aspect ratio vias on 200mm and 300mm wafers.
In-depth comparison of SiC and GaN-on-Si substrate requirements for power devices. Analyzes defect density impact on device yield, epi-layer quality metrics (micropipe density, BPD conversion, doping uniformity), and cost trajectories for automotive and industrial applications.
Quantitative analysis of wafer reclaim ROI for semiconductor fabrication. Examines reclaim cycle limits by wafer type, spec degradation curves, quality metrics comparison (surface roughness, TTV, particle counts) between virgin and reclaimed wafers, and environmental sustainability benefits.
Practical decision framework for wafer bonding selection in MEMS and 3D-IC applications. Compares bond strength, hermeticity, process temperature, alignment accuracy, surface requirements, and cost across the six major bonding technologies with application-specific recommendations.
Review of SOI and Si₃N₄ substrate specifications for silicon photonic integrated circuits. Covers buried oxide thickness optimization, device layer uniformity requirements, waveguide loss correlation to substrate quality, and emerging thin-film lithium niobate on silicon platforms.
Comprehensive overview of thin-film deposition techniques for pre-coated substrates. Compares thermal oxide vs LPCVD vs PECVD vs ALD for various applications, with detailed discussion of film stress management, stoichiometry control, and metrology techniques including spectroscopic ellipsometry.
Analysis of substrate requirements for emerging advanced packaging technologies. Covers RDL design rules (L/S scaling from 5μm to 0.4μm), TSV aspect ratio evolution, glass core substrate advantages over organic interposers, and heterogeneous integration substrate challenges.
Technical deep-dive on ALD aluminum oxide for gate dielectric applications. Discusses TMA/H₂O process window, interface trap density (Dit) optimization through post-deposition annealing, thickness control for EOT scaling, and comparative analysis with thermal SiO₂ and HfO₂.
New articles published regularly on substrate engineering, MEMS processes, power electronics materials, and advanced packaging technologies. Bookmark this page or join our mailing list.
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