(Invited) Nature of Point Defects at High-Mobility Semiconductor/Interfaces Probed by Electron Spin Resonance: Thermal GaAs/GaAs-Oxide Structures

2014 ◽  
Vol 64 (11) ◽  
pp. 293-299
Author(s):  
A. Stesmans ◽  
S. Nguyen ◽  
V. V. Afanas'ev
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Point Defects ◽  
High Mobility ◽  
Semiconductor Interfaces ◽  
Spin Resonance

Probing Semiconductor/Insulator Heterostructures Through Electron Spin Resonance of Point Defects: Interfaces, Interlayers, and Stress

2006 ◽  
Vol 984 ◽  
Author(s):  
A. Stesmans ◽  
K. Clémer ◽  
P. Somers ◽  
V. V. Afanas'ev
Keyword(s):  
Electron Spin Resonance ◽  
Integrated Circuits ◽  
Electron Spin ◽  
Point Defects ◽  
Atomic Scale ◽  
Interface Quality ◽  
Si Substrates ◽  
Spin Resonance ◽  
The Impact

AbstractElectron spin resonance (ESR) spectroscopy has become indispensable when it comes to the characterization on atomic-scale of structural, and correlated, electrical properties of actual semiconductor/insulator heterostructures. Through probing of paramagnetic point defects such as the Pb-type defects, E', and EX as a function of VUV irradiation and post deposition heat treatment, basic information as to the nature, quality, and thermal stability of the interface and interfacial regions can be established. This is illustrated by some specific examples of ESR analysis on contemporary Si/insulator structures promising for future developments in integrated circuits. First the impact of strain on the Si/SiO2 entity will be discussed. Through ESR analysis of thermally oxidized (111)Si substrates mechanically stressed in situ during oxidation, and tensile strained (100)sSi/SiO2 structures, it will be pointed out that in-plane tensile stress in Si can significantly improve the interface quality. Next, ESR results for stacks of (100)Si/SiOx/HfO2 and (100)Si/LaAlO3 are presented, revealing the potential to attain a high quality Si/SiO2 interface for the former and an abrupt, thermally stable interface for the latter.

Inherent point defects in thermal biaxially tensile strained-(100)Si/SiO2 probed by electron spin resonance

2006 ◽  
Vol 135 (3) ◽  
pp. 195-198 ◽  
Author(s):  
A. Stesmans ◽  
P. Somers ◽  
V.V. Afanas’ev ◽  
C. Claeys ◽  
E. Simoen
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Point Defects ◽  
Spin Resonance

Microscopic mechanisms behind the high mobility in rubrene single-crystal transistors as revealed by field-induced electron spin resonance

2011 ◽  
Vol 83 (7) ◽  
Author(s):  
Kazuhiro Marumoto ◽  
Norimichi Arai ◽  
Hiromasa Goto ◽  
Masashi Kijima ◽  
Kouichi Murakami ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Single Crystal ◽  
Electron Spin ◽  
High Mobility ◽  
Spin Resonance
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