In Situ, Real-Time Curvature Imaging During Chemical Vapor Deposition

2003 ◽  
Vol 795 ◽  
Author(s):  
David A. Boyd ◽  
Ashok B. Tripathi ◽  
Mohamed El-Naggar ◽  
David G. Goodwin
Keyword(s):  
Thin Film ◽  
Chemical Vapor Deposition ◽  
Real Time ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Film Stress ◽  
Stress Distributions ◽  
Gradient Sensing ◽  
Full Field

AbstractCoherent Gradient Sensing (CGS) is a full-field optical technique that produces real-time images of macroscopic wafer curvature, which, for thin films, can be related to stress through Stoney's equation. Here we describe the use of CGS as an in situ diagnostic to observe film stress distributions during chemical vapor deposition. The application of this method to measure oxygen diffusion rates in thin film YBa2Cu3O6+δ(YBCO) and stresses in thin film PbxBa1-xTiO3 (PBT) under chemical vapor deposition (CVD) conditions will be discussed.

scholarly journals Real-time in-situ Investigation of III-V Nanowire Growth using Custom-designed Hybrid Chemical Vapor Deposition-TEM

2017 ◽  
Vol 23 (S1) ◽  
pp. 1716-1717 ◽  
Author(s):  
Kimberly Dick Thelander ◽  
L. Reine Wallenberg ◽  
Axel R. Persson ◽  
Marcus Tornberg ◽  
Daniel Jacobsson ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Real Time ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Nanowire Growth ◽  
In Situ Investigation

Real-Time X-Ray Scattering Studies of Surface Structure During Metalorganic Chemical Vapor Deposition of GaN

MRS Bulletin ◽  
1999 ◽  
Vol 24 (1) ◽  
pp. 21-25 ◽  
Author(s):  
G. Brian Stephenson ◽  
Jeffrey A. Eastman ◽  
Orlando Auciello ◽  
Anneli Munkholm ◽  
Carol Thompson ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Surface Structure ◽  
Real Time ◽  
Vapor Phase ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
X Rays ◽  
Production Scale ◽  
X Ray

Vapor-phase processes such as chemical vapor deposition (CVD) and reactive ion etching are the primary methods for the production-scale synthesis and processing of many high-quality thin-film materials. For example, these processes are widely used in the microelectronics industry for synthesis and lithography of the various semiconducting, insulating, and conducting layers in devices. Understanding the means of controlling the microstructure and composition of these materials is of great technological interest. However a difficulty often encountered in developing vapor-phase processes is an undesirable dependence on trial-and-error methods for optimizing the many process parameters. These parameters include gas composition, flow rate, pressure, and substrate temperature, all of which are typically changing with time. This reliance on empirical methods can be attributed to the tremendous chemical and physical complexity of vapor-phase processes and the lack of appropriate in situ measurement techniques for the vapor-phase environment.We have initiated a program to apply synchrotron x-ray analysis techniques as real-time probes of film and surface structure during vapor-phase processing. X-rays have a combination of properties which makes them particularly well-suited for these studies. Unlike electrons, x-rays have a sufficiently low absorption to penetrate vapor-phase processing environments and chamber walls. Unlike visible light, x-rays have wavelengths and energies suitable for study of atomic-scale structure and chemistry. A growing number of in situ synchrotron x-ray investigations of film growth and processing demonstrate the power of these techniques.

In situ plasma diagnostics for chemical vapor deposition of nano-carbon thin film materials

2003 ◽  
Vol 69 (2-4) ◽  
pp. 446-451 ◽  
Author(s):  
A.N. Obraztsov ◽  
A.A. Zolotukhin ◽  
A.O. Ustinov ◽  
A.P. Volkov ◽  
Yu. Svirko ◽  
...  
Keyword(s):  
Thin Film ◽  
Chemical Vapor Deposition ◽  
Plasma Diagnostics ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Carbon Thin Film ◽  
Nano Carbon
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