Ultra-thin silicon nitride by hot wire chemical vapor deposition (HWCVD) for deep sub-micron CMOS technologies

2002 ◽  
Vol 61-62 ◽  
pp. 625-629 ◽  
Author(s):  
Parag C. Waghmare ◽  
Samadhan B. Patil ◽  
Alka Kumbhar ◽  
R.O. Dusane ◽  
V.Ramgopal Rao
Keyword(s):  
Chemical Vapor Deposition ◽  
Silicon Nitride ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Hot Wire ◽  
Thin Silicon

Low Temperature Silicon Nitride Films Deposited on 3D Topography by Hot Wire Chemical Vapor Deposition (HWCVD)

2007 ◽  
Vol 1036 ◽  
Author(s):  
Stephan Warnat ◽  
Markus Hoefer ◽  
Lothar Schaefer ◽  
Helmut Foell ◽  
Peter Lange
Keyword(s):  
Chemical Vapor Deposition ◽  
Silicon Nitride ◽  
Vapor Deposition ◽  
Electrical Breakdown ◽  
Morphological Structure ◽  
Chemical Vapor ◽  
Hot Wire ◽  
Silicon Nitride Films ◽  
Deposition Processes ◽  
Silicon Vias

AbstractSilicon nitride films were deposited by hot-wire chemical vapor deposition processes (HW-CVD). The films reveal a morphological structure very similar to nitrides formed in low pressure CVD (LP-CVD) or plasma enhanced CVD (PE-CVD) processes. The electrical breakdown voltages, however, are much smaller for HW- than PE- or LPCVD films. The deposition in holes for isolation purpose in “through silicon vias” (TSV) technologies in combination with optical devices, which require very low temperatures (<200 °C), have been investigated. They reveal sufficiently good properties for the planned applications.

Effect of SiH4 Flow Rates on the Structures and Properties of Si-Rich Silicon Nitride Films Prepared by Hot Wire Chemical Vapor Deposition

2019 ◽  
Vol 288 ◽  
pp. 135-139 ◽  
Author(s):  
Yan Sai Tian ◽  
Ai Ming Gao ◽  
Bing Qing Zhou
Keyword(s):  
Thin Films ◽  
Chemical Vapor Deposition ◽  
Silicon Nitride ◽  
Band Gap ◽  
Flow Rate ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Light Transmittance ◽  
Silicon Cluster ◽  
Hot Wire

Silicon-rich silicon nitride thin films were deposited on the P type (100) of silicon and Corning7059 glass by hot-wire chemical vapor deposition method using SiH4 and NH3 as reaction gas source. The effects of SiH4 flow rate on the structures and optical properties of the thin films were studied under optimizing other deposition parameters. The structures, band gap width and surface morphology of the thin films were characterized by Fourier transform infrared absorption spectroscopy (FTIR), ultraviolet-visible (UV-VIS) light transmittance spectra and scanning electron microscope (SEM), respectively. The experiment results show that, with increasing of the SiH4 flow rate, the content of N and Si atoms in the thin films increases, and the Si-N bond density increases gradually, and the optical band gap of the films shows a trend of increasing. When the silane flow rate is less than 0.9sccm, there is no Si-H bond stretching vibration absorption peak, and silicon atoms mainly bond with nitrogen atoms. As the SiH4 flow rate decreases, silicon clusters embedded in silicon nitride matrix gradually become smaller. When SiH4 flow rate is 0.4sccm, we prepared the silicon cluster nanoparticles with an average diameter of about 50nm embedded in silicon nitride thin films matrix. Therefore, properly reduction of the SiH4 flow rate is favorable for preparing the smaller silicon cluster nanoparticles in silicon rich silicon nitride thin films. The results lay the foundation for the preparation of silicon quantum dots thin film materials.

High-quality hydrogen-diluted a-SiNx:H films deposited by hot-wire chemical vapor deposition

2004 ◽  
Vol 808 ◽  
Author(s):  
Fengzhen Liu ◽  
Lynn Gedvilas ◽  
Brian Keyes ◽  
Errol Sanchez ◽  
Shulin Wang ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Silicon Nitride ◽  
Vapor Deposition ◽  
Surface Coverage ◽  
Chemical Vapor ◽  
Breakdown Field ◽  
Hot Wire ◽  
High Quality ◽  
Silicon Nitride Films ◽  
Gas Ratio

ABSTRACTWe have studied the effect of H dilution on silicon nitride films deposited by the hot-wire chemical vapor deposition (HWCVD) technique using SiH4, NH3, and H2 gases. We found that H dilution significantly enhances the properties at silicon nitride films. The N content in the film increases by more than 2 times compared to the film without dilution, based on FTIR measurements. As a result, we can achieve high-quality a-SiNx:H films at low substrate temperature using a much lower gas ratio of NH3/SiH4(∼1) compared to a ratio of about 100 for conventional deposition by HWCVD. We also found that dilution decreases the H content in the films. More importantly, diluted SiNx films are conformal. Scanning electron microscopy measurements show a nearly 100% surface coverage over a sharp object. Electric breakdown measurement shows a well-insulated film with more then a few MV/cm for the breakdown field.

Investigation of the tantalum catalyst during the hot wire chemical vapor deposition of thin silicon films

2006 ◽  
Vol 501 (1-2) ◽  
pp. 322-325 ◽  
Author(s):  
D. Grunsky ◽  
M. Kupich ◽  
B. Hofferberth ◽  
B. Schroeder
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Silicon Films ◽  
Hot Wire ◽  
Thin Silicon

Silicon Nitride as Dielectric Medium Deposited at Ultra High Deposition Rate (>7 nm/s) using Hot-Wire Chemical Vapor Deposition

2007 ◽  
Vol 46 (3B) ◽  
pp. 1290-1294 ◽  
Author(s):  
Vasco Verlaan ◽  
Silvester Houweling ◽  
Karine van der Werf ◽  
Hanno D. Goldbach ◽  
Ruud E. I. Schropp
Keyword(s):  
Chemical Vapor Deposition ◽  
Silicon Nitride ◽  
Deposition Rate ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Dielectric Medium ◽  
High Deposition Rate ◽  
Hot Wire

Thin-Film Transistors based on Hot-Wire Amorphous Silicon on Silicon Nitride

1999 ◽  
Vol 557 ◽  
Author(s):  
B. Stannowski ◽  
H. Meiling ◽  
A. M. Brockhoff ◽  
R. E. I. Schropp
Keyword(s):  
Thin Film ◽  
Chemical Vapor Deposition ◽  
Silicon Nitride ◽  
Glow Discharge ◽  
Silicon Dioxide ◽  
Amorphous Silicon ◽  
Vapor Deposition ◽  
Thin Film Transistors ◽  
Chemical Vapor ◽  
Hot Wire

AbstractWe present state-of-the-art thin-film transistors (TFTs) incorporating amorphous silicon i-layers deposited by hot-wire chemical vapor deposition. The TFTs are deposited on glow-discharge silicon nitride as well as on thermally-grown silicon dioxide. The devices on silicon nitride have a field-effect mobility above 0.7 cm2/Vs, a threshold voltage around 2 V and a sub-threshold slope as low as 0.5 V/dec. As commonly observed, the TFTs on silicon-dioxide have higher values for the threshold voltage and the sub-threshold slope. In the annealed state the hot-wire TFTs show almost the same properties as TFTs deposited by conventional plasma-enhanced chemical vapor deposition. Nevertheless, the stress-time dependent behavior under prolonged gate-voltage stress at elevated temperature is different from that of the glow-discharge devices. The hot-wire TFTs are clearly more stable than their glow-discharge counterparts. Furthermore, we found differences in the stress behavior of the hot-wire TFTs deposited on silicon nitride and silicon dioxide.

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