Since
basically the start of ALD in high volume DRAM manufacturing on 300 mm
wafers, ozone has been employed as the co-reactant for ALD of hafnia and
zirconia based high-k node dielectrics in the DRAM capacitor memory
cell. The ozone concentration directly controls through-put, uniformity
and conformalty of the deposited high-k and most importantly also the
high-k dielectric performance of the layer including CET/Leakage
performance and log term reliability. Please see this early post on
details for these processes (LINK)
Just recently MKS Instruments reported (Seeking Alpha Earnings call transcript, LINK) that they won significant business from a Korean end-user
for a high flow of ozone systems used in atomic layer deposition to
fabricate DRAM memory devices. In addition, MKS reported to have just received a significant suppler award from
another major Korean OEM.
MKS further stated that they have made strategic investments with a significant impact on their
semiconductor OEM and end-user businesses. Amazingly, the revenue in Korea has increased 250% since 2012. In 2017 alone, their
Korea end-user business grew 114%, while the Korea OEM business grew
96%.
Based
on this we may assume that high concentration ozone supply i still
crucial for the ALD oxide processes in DRAM manufacturing.
MKS Ozone Gas Generators
SEMOZON® ozone gas generators and
subsystems are the industry standard for compact, high concentration,
ultra-clean ozone gas generation. Applications include Atomic Layer
Depostion (ALD), Chemical Vapor Deposition (CVD), cleaning and water
treatment.
Link to MKS Instrument Ozone products: LINK
MKS Instruments, Inc. is a global provider of instruments, subsystems
and process control solutions that measure, control, power, monitor, and
analyze critical parameters of advanced manufacturing processes to
improve process performance and productivity. The Company’s products
are derived from core competencies in pressure measurement and control,
flow measurement and control, gas and vapor delivery, gas composition
analysis, residual gas analysis, leak detection, control technology,
ozone generation and delivery, RF & DC power, reactive gas
generation, vacuum technology, lasers, photonics, sub-micron
positioning, vibration isolation, and optics. MKS’ primary markets
include semiconductor capital equipment, general industrial, life
sciences, and research. Additional information can be found at www.mksinst.com.
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