Tecport E-beam Evaporator Process parameters. METALS: 1.Aluminium. 2.Chromium. 3.Gold. 4.Titanium. 5.Hafnium. 6.Nickel. OXIDES: 1. Aluminium Oxide. 2. Silicon Dioxide. 3. Titanium Oxide. 4. Indium – Tin Oxide. List of materials which have been evaporated:
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From XPS data shows that the atomic concentration of O2 is more on the surface and with depth it is decreasing and the atomic concentration of Ti is increasing with depth.
Hafnium (Hf)
Process parameter:
Base pressure: 3.26E-6 Torr.
Deposition pressure: 1.9E-6 Torr.
Rate of deposition: 3 Å/s.
Measured thickness (Dektak): 18.23nm.
Sheet Resistance: 145.5 Ω/.
Resistivity: 145.5 X 18.23E-9= 2.65 µΩ m.
Hf - XRD Data:
Nickel (Ni)
Process parameter:
Base pressure: 3.2E-6 Torr.
Deposition pressure: 8E-6 Torr.
Rate of deposition: 1 Å/s.
Measured thickness (Dektak): 65.3 nm.
Annealing: Annealed at 450°C.
Sheet Resistance before annealing: 5.09 Ω/.
Sheet Resistance after annealing: 5.75 Ω/.
Resistivity after annealing: 37.5E-8 Ω m.
Ni - XRD Data (Before annealing):
Ni - XRD Data (After annealing):
Aluminium Oxide (Al203):
Process parameter:Base pressure: 4E-6 Torr.
Deposition pressure: 8.71E-6 Torr.
Rate of deposition: 1 Å/s.
Measured thickness (Dektak): 150.5 nm.
Measured thickness (Ellipsometer): 133 nm.
ANALYSIS:
Aluminium Oxide (Al203) with O2:
Base pressure: 3E-6 Torr.
Deposition pressure: 4.86 E-5 Torr.
Rate of deposition: 1 Å/s.
Flow rate (O2): 1 sccm (O2 started 1 min before deposition).
Measured thickness (Dektak): 150 nm.
Measured thickness (Ellipsometer): 144 nm.
Process parameter:
ANALYSIS:
Silicon Dioxide (SiO2):
Process parameter:Base pressure: 2E-6 Torr.
Deposition pressure: 6E-6 Torr.
Rate of deposition: 1 Å/s.
Measured thickness (Dektak): 134 nm.
Silicon Dioxide (SiO2) with O2:Process parameter:
Base pressure: 2E-6 Torr.
Deposition pressure: 4E-5 Torr.
Rate of deposition: 1 Å/s.
Measured thickness (Dektak): 150 nm.
ANALYSIS:SiO2 Vs. SiO2 with O2
Titanium Oxide (TiO2):
Process parameter:
Base pressure: 4.8E-6 Torr.
Deposition pressure: 4E-5 Torr.
Rate of deposition: 1 Å/s.
Flow rate (O2): 1 sccm.
Measured thickness (Ellipsometer): 77.6 nm
ANALYSIS:wavelength Vs. refractive index and extinction coefficient: