TY - JOUR
T1 - A new regime for high rate growth of nanocrystalline diamond films using high power and CH4/H2/N2/O2 plasma
AU - Tang, C.J.
AU - Abe, I.
AU - Fernandes, A.J.S.
AU - Neto, M.A.
AU - Gu, L.P.
AU - Pereira, S.
AU - Ye, H.
AU - Jiang, X.F.
AU - Pinto, J.L.
PY - 2011/3
Y1 - 2011/3
N2 - In this work, we report high growth rate of nanocrystalline diamond (NCD) films on silicon wafers of 2 inches in diameter using a new growth regime, which employs high power and CH4/H2/N2/O2 plasma using a 5 kW MPCVD system. This is distinct from the commonly used hydrogen-poor Ar/CH4 chemistries for NCD growth. Upon rising microwave power from 2000 W to 3200 W, the growth rate of the NCD films increases from 0.3 to 3.4 μm/h, namely one order of magnitude enhancement on the growth rate was achieved at high microwave power. The morphology, grain size, microstructure, orientation or texture, and crystalline quality of the NCD samples were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction, and micro-Raman spectroscopy. The combined effect of nitrogen addition, microwave power, and temperature on NCD growth is discussed from the point view of gas phase chemistry and surface reactions.
AB - In this work, we report high growth rate of nanocrystalline diamond (NCD) films on silicon wafers of 2 inches in diameter using a new growth regime, which employs high power and CH4/H2/N2/O2 plasma using a 5 kW MPCVD system. This is distinct from the commonly used hydrogen-poor Ar/CH4 chemistries for NCD growth. Upon rising microwave power from 2000 W to 3200 W, the growth rate of the NCD films increases from 0.3 to 3.4 μm/h, namely one order of magnitude enhancement on the growth rate was achieved at high microwave power. The morphology, grain size, microstructure, orientation or texture, and crystalline quality of the NCD samples were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction, and micro-Raman spectroscopy. The combined effect of nitrogen addition, microwave power, and temperature on NCD growth is discussed from the point view of gas phase chemistry and surface reactions.
KW - CH/H /N/O plasma
KW - high growth rate
KW - high-power MPCVD
KW - microwave power
KW - nanocrystalline diamond (NCD) films
UR - http://www.scopus.com/inward/record.url?scp=79551567724&partnerID=8YFLogxK
U2 - 10.1016/j.diamond.2011.01.017
DO - 10.1016/j.diamond.2011.01.017
M3 - Article
AN - SCOPUS:79551567724
VL - 20
SP - 304
EP - 309
JO - Diamond and Related Materials
JF - Diamond and Related Materials
SN - 0925-9635
IS - 3
ER -