Technical Blog
Deep dive into the physics and integration logic of semiconductor manufacturing
Dielectric vs Metal-Fill Voids: Follow the Function
Compare dielectric and metal-fill voids by following isolation, conduction and later process accessibility.
Film Uniformity vs Step Coverage: Two Spatial Questions
Understand why wafer-scale film uniformity, local step coverage and complete gap filling are separate observations.
Atomic Layer Deposition: Fundamental Principles, Mechanisms, and Integration in Advanced Semiconductor Manufacturing
Atomic layer deposition (ALD) is a vapor-phase thin-film deposition technique in which materials are grown sub-monolayer by sub-monolayer through sequential, self-limiting…
CVD: Surface Reaction Kinetics, Film Growth and Integration
Chemical vapor deposition (CVD) is a materials processing technology in which thin solid films are formed on a heated substrate through chemical reactions of gas-phase precursors.
LPCVD Explained: Transport, Surface Reaction and Coverage
Distinguish transport, surface reaction and coverage when interpreting LPCVD.
PECVD: Plasma Chemistry and Film Growth
PECVD uses plasma-generated species to grow films; ICP-PECVD is one source design. Thermal budget, coverage, film quality and damage depend on chemistry and reactor conditions.
PVD Sputtering: Target to Wafer
PVD transfers material from a source to the wafer; sputtering uses ion momentum. The 7nm metal-film cross-sections show integration context, not proof of a sputter step.
Passivation Layer Deposition: Physical Principles, Process Integration, and Advanced Node Evolution
In modern semiconductor fabrication, the final steps of back-end-of-line (BEOL) processing are just as critical to device yield and reliability as front-end active device…
Deposition Rate: Meaning and Limits
Deposition rate measures film growth per unit time. Its trade-offs with coverage and film quality depend on method and geometry; the linked flow does not report rates.
Electroless Deposition in Advanced Semiconductor Metallization: Principles, Kinetics, and Node Evolution
As semiconductor feature sizes scale deep into the sub-10 nanometer regime, traditional physical deposition techniques face severe physical limitations.
Flowable CVD: Gap Filling, Material Conversion and Planarization
Flowable chemical vapor deposition (FCVD) allows a depositing silicon-containing network to redistribute into narrow gaps, reducing the risk that the entrance closes before the interior is filled. Filling establishes where the material goes. Conversion and densification establish its material condition. CMP removes excess material and establishes a plane. A filled outline alone cannot demonstrate all three outcomes.
Chemical Vapor Deposition: Fundamental Physics, Mechanisms, and Advanced Process Integration
CVD forms films through reactions of gas-phase precursors. The linked 40nm deposition steps establish film locations but do not identify the deposition method as CVD.