In this study, a nano-columnar low-temperature (LT) GaN buffer was used to reduce the wafer bowing of a GaN layer grown on a sapphire substrate. A significant reduction in the extent of wafer bowing was observed for the GaN layer for the preserved nano-columnar LT GaN [...]
Gallium Nitride (GaN) is the basic material of blue LED and has important applications in LED and ultraviolet laser.
PAM-XIAMEN can epitaxially grow GaN wafers for LED and LD. For more wafer specification please visit:https://www.powerwaywafer.com/gan-wafer/epitaxial-wafer.html. How do we grow GaN LED epiwafer on sapphire?
Please click [...]
2023-04-26meta-author
PAM XIAMEN offers SiO2 Silica Quartz Single Crystal.
Major capability parameter
Growth method
hydro-thermal method
Crystal Structure
M6
Unit cell constant
a=4.914Å c=5.405 Å
Melt point(℃)
1610℃
Density
2.684g/cm3
Hardness
7(mohs)
Thermal conductivity
0.0033cal/cm℃
Planned constant
1200uv/℃(300℃)
Index of refraction
1.544
Thermal expansion
α11:13.71×106 / ℃ α33:7.48×106 /℃
Frequency constant
1661(kHz/mm)
Crystal orientation
Y、X or Z,30º~42.75 º ±5
Polishing
Single or double Ra<10Å
Thickness
0.5mm±0.05mm TTV<5um
Diameter
Φ2″(50.8mm)、Φ3″(76.2mm)、Φ4″(100mm)±0.2mm
main positioning:22±1.5mm (Φ3″) 32±3.0 (Φ4″)
Secondary positioning :10mm±1.5mm
For more information, please [...]
2019-03-15meta-author
PAM-XIAMEN offers 650V GaN FETs chip for fast charge. In current market, gallium nitride fast charging sources mainly use 650V GaN chip (GaN FETs) as power switches, and the high-frequency characteristics of gallium nitride are used to make terminal fast charging products smaller in size and higher [...]
2020-11-24meta-author
Highlights
•Aberration-corrected TEM and EELS reveal structural and elemental profiles across GaAs/Si bond interfaces in wafer-bonded GaInP/GaAs/Si – multi-junction solar cells.
•Fluctuations in elemental concentration in nanometer-thick amorphous interface layers, including the disrubutions of light elements, are measured using EELS.
•The projected widths of the interface layers [...]
PAM XIAMEN offers 4″ Silicon Wafer-19 as follows, while silicon wafer list includes, but not limited to the following.
Silicon wafers, P/E 4″Ø×400±25µm,
FZ p-type Si:B[111]±0.5°, Ro > 10,000 Ohmcm,
One-side-polished, back-side etched, SEMI Flat (one),
Sealed in Empak or equivalent cassette,
MCC Lifetime>1,000µs.
For more polished wafer specification, please [...]
2019-11-26meta-author