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High Brightness LED(Light Emitting Diode) for visible light through NUV and DUV, LD(Laser Diode), HEMT(High Electron Mobility Transistor), SoS(Silicon on Sapphire), various kinds of Sensor utilizing resistant to hi-temp and corrosive gasses, and support wafers for free-standing epitaxial growth, our sapphire substrtaes are well conforming to wide range of applications with conventional c-plane as well as semi and non polar m-plane, a-plane and r-plane providing atomic level flatness, step and terrace configuration, convex and concave geometry, polarity, precise tilt and misorientation controll, and XPS level ultra clean surface.
Services
To meet customers' versatile requirements:
Crystal Quality, Well Controlled Phase Orientation and Off-Set Angle Polarity.
Phase Orientation
　　　Standard C（0001）+/- 0.1 for LEDs
　　　C（0001）+/- 0.05 for LDs, HEMT, other GaN devices.
　　 A cut phase orientation: c(0001), a(11-20), m(10-10) and r(-1012) with specific off-set angle.
Quality Assurance
　　　Crystal impurities：Certificate of Analysis attached
Sampling standard：MIL-STD-105E, 5 out of 25 wafers
  • 　Diameter
  • 　Thickness （5-TV points）
  • 　OF length
  • 　GBIR/SBIR(ex-TTV Within indivisual wafer and between production batch）
  • 　SORI（ Free standing)
  • 　Backsurface roughness
  • 　 Particulates
Surface Analysis
  • Single Crystal ： Reflection High Energy Electron Diffraction(RHEED)
  • Rocking curve： Peak and width configuration, omega/2theta FWHM
  • Latice strain at sub-surface、Curveture, Dslocation： Density : Lang X-ray  topograph                                                                                      
  • Surface roughness：
       Atomic force microscope (AFM): tapping mode: 5 - microns Scan  Ra & P-V                                                                              
  • Step & Terrace：AFM
  • Backsurface Roughness：Contact mode surfcoder
  • Heavy Metals Rsidueals：TXRF
  • Carbide, Fluoride, Hydroxide：XPS
  • Transparency (Optional)
  • Stoichiometry：XPS
  • Paticulates, defects, stains (Optional)

　
 
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