Electrical characterization of strained Si∕SiGe wafers using transient capacitance measurements

2005 ◽  
Vol 86 (12) ◽  
pp. 122111 ◽  
Author(s):  
Dong Wang ◽  
Masaharu Ninomiya ◽  
Masahiko Nakamae ◽  
Hiroshi Nakashima
Keyword(s):  
Electrical Characterization ◽  
Strained Si ◽  
Capacitance Measurements ◽  
Transient Capacitance

Transient Capacitance Characterization of Deep Levels in Undoped and Si-Doped GaN

2003 ◽  
Vol 764 ◽  
Author(s):  
S. Nakamura ◽  
P. Liu ◽  
M. Suhara ◽  
T. Okumura
Keyword(s):  
Chemical Vapor ◽  
Deep Levels ◽  
Yellow Luminescence ◽  
Capacitance Measurements ◽  
Transient Capacitance ◽  
Si Doped ◽  
Transient Spectroscopy ◽  
Capacitance Transient ◽  
Isothermal Capacitance Transient Spectroscopy

AbstractThe deep levels in both undoped and Si-doped GaN layer grown by metalorganic chemical vapor deposition have been characterized by photocapacitance and transient capacitance spectroscopy. The increase in the photocapacitance was observed in both GaN samples in the range of 1.8 to 2.2 eV. This is due to the photoionization of carriers from the deep levels associated with the yellow luminescence (YL). In addition, the transient capacitance measurements after the photoionization were also performed in the range of 1.8 to 3.4 eV. The notable transient of capacitance was observed at the photon energies of about 2.1 and 3.4 eV, the former could be associated with the change in the charge state of the YL center and latter might stem from some other defects capturing photogenerated carriers. By using the isothermal capacitance transient spectroscopy (ICTS) analysis, the ICTS peaks due to the deep levels associated with YL were detected at about t = 150 s in both GaN samples. In addition, another ICTS peak was detected only in the Si-doped GaN samples. It is considered that this peak is associated with the deep levels deeper than YL levels and the deeper levels originate from defects induced by Si doping.

Electrical characterization of TiO2 gate oxides on strained-Si

2004 ◽  
Vol 72 (1-4) ◽  
pp. 253-256 ◽  
Author(s):  
C.K. Maiti ◽  
S.K. Samanta ◽  
G.K. Dalapati ◽  
S.K. Nandi ◽  
S. Chatterjee
Keyword(s):  
Electrical Characterization ◽  
Strained Si ◽  
Gate Oxides
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