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GaAs crystalWhat we provide:
Item
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Y/N
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Item
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Y/N
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Item
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Y/N
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GaAs crystal
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yes
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Electronic Grade
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yes
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N type
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yes
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GaAs blank
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yes
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Infrared Grade
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yes
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P type
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yes
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GaAs substrate
|
yes
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Cell Grade
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yes
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Undoped
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yes
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GaAs epi wafer
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yes
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GaAs Crystal Substrate
GaAs crystal are cutted into slices, and polishing, the GaAs crystal substrate comes. For specification and details, please visit: Specification of GaAs wafer
GaAs Crystal Epitaxial Growth
We are manufacturing various types of GaAs epi wafer grown by MBE or MOCVD,including LT-GaAs and epi wafer for HEMT,PHEMT and MHEMT.For more details, please visit: epi wafer
Properties of GaAs Crystal
Properties
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GaAs
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Atoms/cm3
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4.42 x 1022
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Atomic Weight
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144.63
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Breakdown Field
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approx. 4 x 105
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Crystal Structure
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Zincblende
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Density (g/cm3)
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5.32
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Dielectric Constant
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13.1
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Effective Density of States in the Conduction Band, Nc (cm-3)
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4.7 x 1017
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Effective Density of States in the Valence Band, Nv (cm-3)
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7.0 x 1018
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Electron Affinity (V)
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4.07
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Energy Gap at 300K (eV)
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1.424
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Intrinsic Carrier Concentration (cm-3)
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1.79 x 106
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Intrinsic Debye Length (microns)
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2250
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Intrinsic Resistivity (ohm-cm)
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108
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Lattice Constant (angstroms)
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5.6533
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Linear Coefficient of Thermal Expansion,
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6.86 x 10-6
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ΔL/L/ΔT (1/deg C)
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||
Melting Point (deg C)
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1238
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Minority Carrier Lifetime (s)
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approx. 10-8
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Mobility (Drift)
|
8500
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(cm2/V-s)
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||
µn, electrons
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||
Mobility (Drift)
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400
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(cm2/V-s)
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||
µp, holes
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||
Optical Phonon Energy (eV)
|
0.035
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Phonon Mean Free Path (angstroms)
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58
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Specific Heat
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0.35
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(J/g-deg C)
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||
Thermal Conductivity at 300 K
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0.46
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(W/cm-degC)
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||
Thermal Diffusivity (cm2/sec)
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0.24
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Vapor Pressure (Pa)
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100 at 1050 deg C;
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1 at 900 deg C
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|
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Wavelength
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Index
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(µm)
|
|
2.6
|
3.3239
|
2.8
|
3.3204
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3
|
3.3169
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3.2
|
3.3149
|
3.4
|
3.3129
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3.6
|
3.3109
|
3.8
|
3.3089
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4
|
3.3069
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4.2
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3.3057
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4.4
|
3.3045
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4.6
|
3.3034
|
4.8
|
3.3022
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5
|
3.301
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5.2
|
3.3001
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5.4
|
3.2991
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5.6
|
3.2982
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5.8
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3.2972
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6
|
3.2963
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6.2
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3.2955
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6.4
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3.2947
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6.6
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3.2939
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6.8
|
3.2931
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7
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3.2923
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7.2
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3.2914
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7.4
|
3.2905
|
7.6
|
3.2896
|
7.8
|
3.2887
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8
|
3.2878
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8.2
|
3.2868
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8.4
|
3.2859
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8.6
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3.2849
|
8.8
|
3.284
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9
|
3.283
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9.2
|
3.2818
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9.4
|
3.2806
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9.6
|
3.2794
|
9.8
|
3.2782
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10
|
3.277
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10.2
|
3.2761
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10.4
|
3.2752
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10.6
|
3.2743
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10.8
|
3.2734
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11
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3.2725
|
11.2
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3.2713
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11.4
|
3.2701
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11.6
|
3.269
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11.8
|
3.2678
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12
|
3.2666
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12.2
|
3.2651
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12.4
|
3.2635
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12.6
|
3.262
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12.8
|
3.2604
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13
|
3.2589
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13.2
|
3.2573
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13.4
|
3.2557
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13.6
|
3.2541
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We also provide LT GaAs.