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Author: Hsiao-Hui Chen Publisher: ISBN: Category : Thin film devices Languages : en Pages : 336
Book Description
"Low Temperature Oxide (LTO) thin films were prepared using a Low Pressure Chemical Vapor Deposition process. The process was characterized by applying traditional statistical studies and response surface technique. The uniformities within wafer and from wafer to wafer were examined by determining the mean and the standard deviation of films thicknesses. Response surface methodology was employed to determine the optimum process conditions. Time, temperature and gas flow ratio were used as the experimental factors. Index of refraction and deposition rate were used as the experimental responses. Additionally, etch rate, density, dielectric constant and infrared (IR) spectra were found for the silicon dioxide films prepared at the determined optimum condition. The IR spectra were obtained by employing Fourier Transform Infrared Spectroscopy (FTIR). The average deposition rate was found to be 46 A per minute and the average index of refraction was 1.44. The calculated density, activation energy, etch rate, dielectric constant and dielectric strength agreed with reported values. A double metal test run was performed using LTO oxide. The results indicated that the recommended baseline LTO process is suitable for multilayer metallization processes."--Abstract.
Author: Hsiao-Hui Chen Publisher: ISBN: Category : Thin film devices Languages : en Pages : 336
Book Description
"Low Temperature Oxide (LTO) thin films were prepared using a Low Pressure Chemical Vapor Deposition process. The process was characterized by applying traditional statistical studies and response surface technique. The uniformities within wafer and from wafer to wafer were examined by determining the mean and the standard deviation of films thicknesses. Response surface methodology was employed to determine the optimum process conditions. Time, temperature and gas flow ratio were used as the experimental factors. Index of refraction and deposition rate were used as the experimental responses. Additionally, etch rate, density, dielectric constant and infrared (IR) spectra were found for the silicon dioxide films prepared at the determined optimum condition. The IR spectra were obtained by employing Fourier Transform Infrared Spectroscopy (FTIR). The average deposition rate was found to be 46 A per minute and the average index of refraction was 1.44. The calculated density, activation energy, etch rate, dielectric constant and dielectric strength agreed with reported values. A double metal test run was performed using LTO oxide. The results indicated that the recommended baseline LTO process is suitable for multilayer metallization processes."--Abstract.
Author: Chris R. Kleijn Publisher: Birkhäuser ISBN: 9783034877435 Category : Science Languages : en Pages : 139
Book Description
Semiconductor equipment modeling has in recent years become a field of great interest, because it offers the potential to support development and optimization of manufacturing equipment and hence reduce the cost and improve the quality of the reactors. This book is the result of two parallel lines of research dealing with the same subject - Modeling of Tungsten CVD processes -, which were per formed independently under very different boundary conditions. On the one side, Chris Kleijn, working in an academic research environment, was able to go deep enough into the subject to laya solid foundation and prove the validity of all the assumptions made in his work. On the other side, Christoph Werner, working in the context of an industrial research lab, was able to closely interact with manufacturing and development engineers in a modern submicron semiconductor processing line. Because of these different approaches, the informal collaboration during the course of the projects proved to be extremely helpful to both sides, even though - or perhaps because - different computer codes, different CVD reactors and also slightly different models were used. In spite of the inconsistencies which might arise from this double approach, we feel that the presentation of both sets of results in one book will be very useful for people working in similar projects.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Depositions of high quality SiO[sub 2] and SnO[sub 2] films from the reaction of homoleptic amido precursors M(NMe[sub 2])4 (M = Si, Sn) and oxygen were carried out in an atmospheric pressure chemical vapor deposition r. The films were deposited on silicon, glass and quartz substrates at temperatures of 250 to 450C. The silicon dioxide films are stoichiometric (O/Si = 2.0) with less than 0.2 atom % C and 0.3 atom % N and have hydrogen contents of 9 [plus-minus] 5 atom %. They are deposited with growth rates from 380 to 900 [angstrom]/min. The refractive indexes of the SiO[sub 2] films are 1.46, and infrared spectra show a possible Si-OH peak at 950 cm[sup [minus]1]. X-Ray diffraction studies reveal that the SiO[sub 2] film deposited at 350C is amorphous. The tin oxide films are stoichiometric (O/Sn = 2.0) and contain less than 0.8 atom % carbon, and 0.3 atom % N. No hydrogen was detected by elastic recoil spectroscopy. The band gap for the SnO[sub 2] films, as estimated from transmission spectra, is 3.9 eV. The resistivities of the tin oxide films are in the range 10[sup [minus]2] to 10[sup [minus]3] [Omega]cm and do not vary significantly with deposition temperature. The tin oxide film deposited at 350C is cassitterite with some (101) orientation.
Author: Hsiao-Hui Chen
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Author: Electrochemical Society. High Temperature Materials Division
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