Photoemission study of LT-GaAs
The electronic structure of GaAs (1 0 0) grown by low-temperature molecular beam epitaxy was investigated by means of photoemission spectroscopy. Slight differences are found in the valence band spectra of GaAs layers grown at different As2/Ga flux ratios. Analysis of As 3d [...]
The GaN lattice mismatch grown on silicon carbide substrates is low. The low lattice mismatch of gallium nitride on SiC wafers indicates that the lattices of layer 1 and layer 2 match each other. The better the match, the fewer defects, and the better the performance and lifetime [...]
2021-04-26meta-author
Silicon Nitride Waveguide – Substrates and Services Provided
PAM XIAMEN offers Silicon Nitride Waveguide
Clients fabricate SiN waveguides using contact lithography and pattern designs with waveguides with widths varying from 0.8 microns to 2.0 microns each of which has a straight reference waveguides and spiral waveguides [...]
2019-02-12meta-author
PAM XIAMEN offers 4″ Si wafer Thickness:500±20μm.
4″ Si wafer
4″ Si, N-type, <100>, SSP
resistivity3000-4000Ωcm
thickness500±20μm
carrier lifetime>1ms(1000μm)
For more information, please visit our website: https://www.powerwaywafer.com,
send us email at sales@powerwaywafer.com and powerwaymaterial@gmail.com
Found in 1990, Xiamen Powerway Advanced Material Co., Ltd (PAM-XIAMEN) [...]
2019-08-22meta-author
PAM-PA04 series detectors are high density pixel array detector based on CZT crystal. they can counting high-dose X-ray and imaging.
1. CZT High-Density Pixel Detector Specification
Material
CdZnTe
Density
5.8g/cm3
Volume resistivity
>1010Ω.cm
Dimension
>10.0×10.0mm2
Thickness
>0.7mm
Pixel size
<70um
Single Pixel leakage current
<0.01nA@100V
The maximum counting rate of linear region
>100Mcps/mm2
Electrode material
Au
Operation temperature
20℃~40℃
Storage temperture
10℃~40℃
Storage humidity
20%-80%
Details
2. Features of CZT Pixel Detector [...]
2019-04-24meta-author
PAM XIAMEN offers Middium and Small Size Photomask.
Chromium Plate Accuracy (Standard Size:6inch Quartz)
Accuracy/Grade
Max Accuracy
High-precision
Medium accuracy
General accuracy
Min.Line/Space Width
0.75μm/0.75μm
3μm/3μm
5μm/5μm
10μm/10μm
CD Control
±0.1μm
±0.3μm
±0.5μm
±1.0μm
Total Pitch Accuracy
±0.25μm
±0.5μm
±0.75μm
±1.0μm
Registration Accuracy
±0.25μm
±0.5μm
±0.75μm
±1.0μm
Overlay Accuracy
±0.25μm
±0.5μm
±0.75μm
±1.0μm
Orthogonality
±0.5μrad
±0.75μrad
±1.0μrad
±2.0μrad
Chrome Plate Material (Photomask Blank Plate)
Material
Soda Lime Glass、Quartz
Max. Size
3006,4009,5009,6012,6025,7012,9012,12″x12″,14″x14″
Normal Size
1.5±0.2mm,2.3±0.2mm ,3.0±0.2mm ,4.8±0.2mm
Thickness
6.35±0.2mm (QZ)
Film Type
Low Reflectance Chrome
Optical Density(λ=450nm)
Between Plates3.0±0.3 In Plate±0.3
Reflectivity(λ=436nm)
Between Plates10±5% In Plate±2%
Main application areas:
1. IC Bumping, [...]
2019-07-04meta-author