A Single-Zone Chemical Vapor Deposition (CVD) System is a standard laboratory-scale furnace setup used to deposit high-quality thin films or nanomaterials (like graphene or carbon nanotubes) onto a substrate via chemical reactions of gaseous precursors. A single-zone system is optimized for uniform thermal processing within a specific "hot zone" in the center of the furnace tube.

A standard single-zone CVD system consists of four primary modules: (1) Tube Furnace: A single-zone furnace (typically capable of 1100 ℃ to 1600 ℃ with a quartz or alumina tube. The heated length usually ranges from 200 mm to 600 mm, with a stable "uniform zone" in the center. (2) Gas Delivery System: A multi-channel manifold equipped with Mass Flow Controllers (MFCs) to precisely mix precursor gases (e.g., CH4, C2H2, H2, Ar). (3) Vacuum System: A mechanical pump or turbomolecular pump to maintain pressures from Atmospheric (APCVD) down to Low Pressure (LPCVD), typically around 10^{-2} to 10^{-3} mbar. (4) PLC/HMI Control: A digital interface to program temperature ramps, gas flow sequences, and pressure setpoints. 

References:

Y. M. Chen, et al., CVD of carbon nanotubes in porous nickel for anodes in lithium ion battery, Current Opinion in Chemical Engineering, 2015, 7, 32-39

J. Kim, et al., Advancements in Chemical Vapor Deposited Carbon Films for Secondary Battery Applications, Small, 2025, 21, 2410570

X. Wang, et al., Chemical vapor deposition and atomic layer deposition for advanced lithium ion batteries and supercapacitors, Energy Environ. Sci., 2015,8, 1889-1904.