Interface effect on dielectric constant of HfO2/Al2O3 nanolaminate films deposited by plasma-enhanced atomic layer deposition

Type:
Journal
Info:
APPLIED PHYSICS LETTERS 90, 232906 (2007)
Date:
2007-06-05
DOI:
http://dx.doi.org/10.1063/1.2746416

Author Information

Name Institution
Pan Kwi ParkKorea Advanced Institute of Science and Technology
Eun-Soo ChaKorea Advanced Institute of Science and Technology
Sang-Won KangKorea Advanced Institute of Science and Technology

Films

Plasma HfO2

Hardware used: Unknown
TEMAHf, tetrakis(ethylmethylamido) Hafnium, hafnium ethylmethylamide, (EtMeN)4Hf
CAS#: 352535-01-4
Where to buy precursor
O2, Oxygen
CAS#: 7782-44-7
Deposition Temperature = 250C

Plasma Al2O3

Hardware used: Unknown
TMA, Trimethylaluminum, Trimethylalumane, AlMe3, Al(CH3)3
CAS#: 75-24-1
Where to buy precursor
O2, Oxygen
CAS#: 7782-44-7
Deposition Temperature = 250C

Film/Plasma Properties

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

Characteristic: Crystallinity, Crystal Structure, Grain Size, Atomic Structure
Analysis: XRD, X-Ray Diffraction
Diagnostic: -

Characteristic: Chemical Binding
Analysis: XPS, X-ray Photoelectron Spectroscopy
Diagnostic: -

Characteristic: Dielectric Constant, Permittivity
Analysis: C-V, Capacitance-Voltage Measurements
Diagnostic: Keithley 590 CV Analyzer

Substrates

Si(100)

Notes

700C high T RTA
Forming gas anneal
HF dip and DI rinse.
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