DOWA Dowa Electronics Materials Co., Ltd.
DOWA

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高纯度金属材料
发光二极管
Communication
Sensor
Lighting (Infrared)
Display
砷化稼晶圆
Laser grade
LED grade
Semi-insulating
氮化合物类晶圆

砷化稼晶圆

Laser grade
LED grade
Semi-insulating

Laser grade
Growth Method Vertical Gradient Freezing
Conduction Type
(Dopant)
N-type:Si
Carrier
Concentration
N-type 0.5-4×1018 cm-3
(Can be specified within this range)
Dislocation Density
(EPD)
(Average) Typical Grade <500cm-2
(Maximum) Typical Grade <2000cm-2
Size φ4" φ3" φ2"
Orientation 1. (100)±0.1°
2. (100) off α°±0.1° towards (011) or (01-1) etc.
3. Customer's request
Diameter (mm) 100.0±0.1 76.0±0.1
76.2±0.1
50.0±0.1
50.8±0.1
Thickness (μm) 450-625
±15
350-600
±15
300-450
±15
Orientation
Flat
(mm) Cleaved Primary Flat is available on request

Length
(Primary)
(Secondary)


32.5±1.0
18.0±1.0

22.0±1.0
12.0±1.0

16.0±1.0
8.0±1.0
Location
(Primary)
(Secondary)

EJ (Dove-Tail)、(0-1-1)±0.5°*、(0-11)±0.5°
or
SEMI US (V-Groove)、(01-1)±0.5°*、(011)±0.5°

±0.05° (*Cleaved)

Edge Rounding Bevelled
Flatness TTV(μm)
Warp(μm)
<5.0
<10.0
<5.0
<10.0

<5.0
<10.0

Surface
Finish
Front Mirror
Back Lapped and etched
Mirror is available on request
Surface Treatment Epi-ready
Laser Marking Option
Packing Fluoroware individual container
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LED grade
Growth Method Vertical Gradient Freezing
Conduction Type
(Dopant)
N-type:Si
Carrier
Concentration
N-type 0.5-4×1018 cm-3
(Can be specified within this range)
Dislocation Density (EPD) (Maximum) Typical Grade <5000cm-2
Size φ4" φ3" φ2"
Orientation 1. (100)±0.1°
2. (100) off α°±0.1° towards (011) or (01-1) etc.
3. Customer's request
Diameter (mm) 100.0±0.2 76.0±0.2
76.2±0.2
50.0±0.2
50.8±0.2
Thickness (μm) 350-625
±20
300-600
±20
250-350
±20
Orientation
Flat
(mm)  

Length
(Primary)
(Secondary)


32.5±1.0
18.0±1.0

22.0±1.0
12.0±1.0

16.0±1.0
8.0±1.0
Location
(Primary)
(Secondary)

EJ (Dove-Tail)、(0-1-1)±0.5°*、(0-11)±0.5°
又は、
SEMI US (V-Groove)、(01-1)±0.5°*、(011)±0.5°

Edge Rounding Bevelled
Flatness TTV(μm)
Warp(μm)
<10.0
<15.0
<10.0
<15.0

<10.0
<15.0

Surface
Finish
Front Mirror
Back Lapped and etched
Surface Treatment Epi-ready is available on request
Laser Marking Option
Packing 25 wafers box or Fluoroware individual container
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Semi-insulating
Growth Method Liquid Encapsulated Czochralski
Conduction Type (Dopant) Semi-Insulating type : (Undoped (C-doped))
Resistivity (at 25 degree C) 1-5×107 Ω cm
Higher resistivity range is available on request
Dislocation Density (EPD) (Average) <105 cm-2
Size φ4" φ3" φ2"
Orientation 1. (100)±0.1°
2. (100) off 2°±0.1° towards (110)
3. Customer's request
Diameter (mm) 100.0±0.1
76.0±0.1
76.2±0.1
50.0±0.1
50.8±0.1
Thickness (μm) 450-625
±15
350-625
±15
300-450
±15
Orientation
Flat
(mm)  

Length
(Primary)
(Secondary)

32.5±1.0
18.0±1.0
22.0±1.0
12.0±1.0
16.0±1.0
8.0±1.0
Location
(Primary)
(Secondary)

EJ (Dove-Tail) (0-1-1)±0.5° (0-11)±0.5°
or
SEMI US (V-Groove) (01-1)±0.5° (011)±0.5°

Edge Rounding Bevelled
Flatness TTV(μm)
TIR(μm)
Warp(μm)
LTV(μm)
*
<3.0
<3.0
<5.0
<1.0
15 × 15 mm

<3.0
<3.0
<5.0
<1.0
15 × 15 mm

<5.0
<3.0
<8.0
-
 

Surface Finish Front Mirror
Back Mirror  Lapped and etched
Surface Treatment Epi-ready is available on request for MOCVD and MBE
Laser Marking Option
Packing 25 wafers box or Fluoroware individual container
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