Silicon University / Track A / Pillar 01 · Substrate Synthesis
02
Chemical Purification & the Siemens Process
Step 02 of 24 · Substrate Material Synthesis & Bulk Crystal Engineering · three tiers, 52 min total.
Quartzite phase
Topic 1.2
3 articles
Tier 1 · Core FundamentalsAchieving 11N Purity: Trichlorosilane and the Siemens Process
Introduces the concept of semi-conductor purity (99.999999999\%, or 11N), explaining why raw metallurgical silicon must be chemically converted to liquid chlorosilanes an…
Tier 2 · Equipment & KinematicsFractional Distillation Columns and Siemens CVD Reactor Dynamics
Details the design of fluidized bed reactors reacting MG-Si with HCl gas at 300^C to form Trichlorosilane (SiHCl_3), followed by multi-stage fractional distillation colum…
Tier 3 · Deep-Dive & Yield EngineeringCVD Deposition Kinetics and Mass-Transfer Dynamics in EGS Production
In-depth evaluation of hydrogen reduction kinetics on heated silicon slim rods (1100^C), thermal radiation loss mitigation, gas-phase nucleation avoidance, and alternativ…