on front   Silicon dioxide VLR700 PECVD  |  
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              | Process characteristics: | 
            
            | Thickness | 
             | 
            
            | Deposition rate Rate at which material is added to a wafer  | 
            270 Å/min | 
            
            | Gas | 
            5% Silane, Nitrous oxide, Helium | 
            
            | Material | 
            silicon dioxide | 
            
            | Microstructure | 
            amorphous | 
            
            | Pressure Pressure of process chamber during processing  | 
            900 mTorr | 
            
            | Refractive index | 
            1.45 | 
            
            | Residual stress | 
            -250 MPa | 
            
            | Sides processed | 
            either | 
            
            | Temperature | 
            250 °C | 
            
            
            | Wafer size | 
            
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            | Equipment | 
            Unaxis VLR 700 PECVD | 
            
            
            
              | Equipment characteristics: | 
            
            | Batch sizes | 
            100 mm: 25 | 
            
            | Wafer geometry Types of wafers this equipment can accept  | 
            1-flat | 
            
            | Wafer holder Device that holds the wafers during processing.  | 
            cassette | 
            
            | Wafer materials List of wafer materials this tool can accept (not list of all materials, just the wafer itself).  | 
            silicon, silicon on insulator | 
            
            | Wafer thickness List or range of wafer thicknesses the tool can accept  | 
            300 .. 700 µm |