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Silicon-Based Micro/Nano Process Line — Build Your Devices, Not Your Fab
MEMS accelerometers, SOI optical modulators, AR/VR masters, RF filters… What do they all have in common?
They all need a stable, flexible, and well-equipped silicon-based micro/nano processing line to go from design to reality. 
The Old Way: Build Your Own Fab →  Expensive Slow Inflexible
Our Way: A Modular “Building Block” Process Line — lithography, etching, deposition, bonding… combine them as you need, build your devices faster. [word_6]
 What We Offer
  • Small-Batch Trial Production — IoT chips, RF devices, process optimization. Fast validation, low R&D threshold. 
  • Failure Analysis — SEM/FIB precision defect localization. Identify process anomalies and improve yield. 
  • Full Turnkey OEM — From design to tape-out. One-stop foundry, no need to build your own fab. 
  •  SOI MPW Tape-Out — Silicon photonics, MEMS, passive structures. Shared wafer, shorter cycle, lower cost.
  • Core Equipment at a Glance
Process
Equipment
Key Spec
Lithography
Nikon i9 Stepper + Vistec EBPG EBL
≤500nm / ≤10nm
Etching
Oxford Plasma Etcher
Deep Si >20:1 aspect ratio
Thin Film Deposition
OIPT PECVD (±3%) + Tystar LPCVD
SiO₂ / Si₃N₄ / Poly-Si
Characterization
SEM, Profilometer, Ellipsometer
Full-process monitoring
A Typical Flow: SOI → Traveling-Wave Electrodes
Taking the silicon photonic modulator as an example — here’s how we build it on our SOI platform in 7 steps :
  1.  Prepare SOI Substrate — Si / SiO₂ / Si-sub, foundation for optical waveguides
  2. Define PN Junction — n⁺/n/p/p⁺ doping for carrier-depletion phase modulation
  3. Ohmic Contact Electrodes — Reduce contact resistance for high-frequency signal injection
  4. Etch Waveguides — High-aspect-ratio etching defines single-mode waveguides
  5. Deposit Passivation Layer — PECVD uniform film protects active regions
  6. Open Electrode Windows — Lithography + etching for contact access
  7. Thicken Traveling-Wave Electrodes — Reduce microwave loss, boost modulation bandwidth
The result: a lateral PIN structure enabling optical phase modulation and high-speed electro-optic response.
 Why Work With Us?
  1. High Precision — EBL down to ≤10nm, meeting cutting-edge R&D needs
  2. Flexible — 8-inch and below, wafers and offcuts, all welcome
  3. Full-Process Coverage — Lithography, etching, deposition, bonding, and testing
  4. Proven Experience — From design consultation to volume production
Whether you’re a university lab or an industry R&D team — let’s talk. Maybe we can save you a few detours 
Sub 1: PlutoChip Co., Ltd    -Discrete Devices and Integrated Circuits-    www.plutochip.com
Sub 2: PlutoSilica Co., Ltd   -Silicon Wafer and Glass Wafer Manufactory-
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