zmkj is a key supplier of sapphire substrates for photoelectronic applications, including the high brightness LED market.
The material is grown and orientated, and substrates are fabricated and polished to an extremely smooth damage free Epi-Ready surface on one or both sides of the wafer. A variety of wafer orientations and sizes up to 6" diameter are available.
A-Plane sapphire substrates - are usually used for hybrid microelectronic applications requiring a uniform dielectric constant and highly insulating characteristics.
C-Plane substrates - tend to be used for lll-V and ll-Vl compounds, such as GaN, for bright blue and green LED and laser diodes.
R-Plane substrates - these are preferred for the hetero-epitaxial deposition of silicon used in microelectronic IC applications.
:Properties of sapphire
|Max. use temperature||1800-1900oC|
|Tensile strength||250-400 MPa|
|Compressive strength||2000 MPa|
|Young's Modulus||350-400 GPa|
|Bending strength||450-860 MPa|
|Rapture Modulus||350-690 MPa|
|Linear expansion rate (at 293-323 K)||5.0*10-6K-1(⊥ C)|
|Thermal conductivity (at 298 K)||30.3 W/(m*K)(⊥ C)|
|32.5 W/(m*K)(∥ C)|
|Specific heat (at 298 K)||0.10 cal*g-1|
|Resistivity (at 298 K)||5.0*1018 Ω*cm(⊥ C)|
|1.3-2.9*1019 Ω*cm(∥ C)|
|Dielectric constant (at 298 K, in 103-109 Hz interval)||9.3 (⊥ C)|
The Detail for 2inch c-axis wafers
Size: 2 inch DSP-175-c-axis
Material: KY Sapphire Al2O3 single crystal without bubble；color ；
Orientation:C-cut,M-axis off 0.0+/-0.2°；
Diameter: 50.8 +/-0.2mm ；
Thickness:175 ± 15 um ；
OF Flat:16.0 +/- 1.0 mm ； OR round shape
OF orientation: a-axis
Surface: SSP /dsp Epi-ready Polished ；
TTV<= 10um ；BOW<= 20um ； Warp<= 20 um ；
Front Surface Roughness (Ra) Ra <= 0.3 nm ； or double side
Back Surface Roughness (Ra) Ra = 1.0 +/-0.2um ；
Edge: from 1mm ；
2 inch C-plane sapphire wafer SSP/DSP
3 inch C-plane sapphire wafer SSP/DSP
4 inch C-plane sapphire wafer SSP/DSP
6 inch C-plane sapphire wafer SSP/DSP
A-plane (1120) sapphire wafer
R-plane (1102) sapphire wafer
M-plane (1010) sapphire wafer
C-axis with a 0.5°~ 10° offcut, toward A-axis or M-axis
Other customized orientation
10x10x0.5mm sapphire wafer
20x20x0.5mm sapphire wafer
Ultra thin (100um) 2inch sapphire wafer
8 inch sapphire wafer
Patterned Sapphire Substrate (PSS)
2 inch C-plane PSS
4 inch C-plane PSS
DSP C-AXIS 0.1mm/ 0.175mm/0.2mm/0.3mm/0.4mm/0.5mm/1.0mmt
DSP/ SSP C-axis 0.43mm/0.5mm
dsp c-axis 0.4mm/ 0.5mm/1.0mm
ssp c-axis 1.0mm/1.3mmm
Q:What is your minimum order requirement?
Q:How long will it take to execute my order and delivery it ?
A:confirm the order 1days After confirming the payment and delivery in 5days if on stocks.
Q:Can you give warranty of your products ?
A:We promise the quality, if the quality has any problems, we will produce new produces or return you money.
Q:How to pay?
A:T/T, Paypal, West Union, bank transfer.
Q:HOW about the freight ?
A:we can help you pay for the fee if you don’t have account,
if the order is over 10000usd, we can delivery by CIF.
Q:If you have any other questions,please do not hesitate to contact me.
A : connect with by skype/whatsapp :+86 158 0194 2596 or firstname.lastname@example.org
we are at your side any time~~