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Atomic scale nitrogen depth profile control during plasma enhanced atomic layer deposition of high k dielectrics

Type:
Journal
Info:
Applied Physics Letters 91, 092901 (2007)
Date:
2007-08-05
DOI:
http://dx.doi.org/10.1063/1.2776350

Author Information

Name Institution
Wan Joo MaengPohang University of Science and Technology (POSTECH)
Hyungjun KimPohang University of Science and Technology (POSTECH)

Films

Plasma HfO2

Hardware used: Custom Remote
TDMAHf, tetrakis(dimethylamido)hafnium, hafnium dimethylamide, (Me2N)4Hf, also CAS# 19782-68-4
CAS#: 19962-11-9
O2, Oxygen
CAS#: 7782-44-7
Deposition Temperature = 250C

Plasma HfON

Hardware used: Custom Remote
TDMAHf, tetrakis(dimethylamido)hafnium, hafnium dimethylamide, (Me2N)4Hf, also CAS# 19782-68-4
CAS#: 19962-11-9
O2, Oxygen
CAS#: 7782-44-7
N2, Nitrogen
CAS#: 7727-37-9
Deposition Temperature = 250C

Film/Plasma Properties

Characteristic: Chemical Composition, Impurities
Analysis: ARXPS, Angle Resolved X-ray Photoelectron Spectroscopy
Diagnostic: -

Characteristic: EOT, Equivalent Oxide Thickness
Analysis: C-V, Capacitance-Voltage Measurements
Diagnostic: Keithley 4200-SCS

Characteristic: Flat Band Voltage
Analysis: C-V, Capacitance-Voltage Measurements
Diagnostic: Keithley 4200-SCS

Characteristic: Hysteresis
Analysis: C-V, Capacitance-Voltage Measurements
Diagnostic: Keithley 4200-SCS

Characteristic: Leakage Current
Analysis: I-V, Current-Voltage Measurements
Diagnostic: Keithley 4200-SCS

Characteristic: Interlayer
Analysis: TEM, Transmission Electron Microscope
Diagnostic: -

Substrates

Si(001)

Notes

1194