Title :
Charge Trapping and Detrapping Behavior of Fluorinated
Gate Stacked nMOSFET
Author :
Chen, Yung-Yu ; Hsieh, Chih-Ren
Author_Institution :
Lunghwa Univ. of Sci. & Technol., Taoyuan, Taiwan
Abstract :
The charge trapping and detrapping characteristics of the fluorinated hafnium oxide/oxynitride (HfO2/SiON) gate stack are investigated. Although incorporation of fluorine in the bulk stack had been proven to eliminate both bulk and interface trap densities due to Hf-F and Si-F bond formation, respectively, the effective trapping barrier of the device with fluorine incorporation (1.29 eV) is deeper than without fluorine incorporation (1.13 eV), indicating that the detrapping ability of the fluorinated devices may limit future fluorine process applications.
Keywords :
MOSFET; fluorine; hafnium compounds; silicon compounds; HfO2-SiON; charge detrapping behavior; charge trapping behavior; fluorinated gate stacked nMOSFET; fluorine incorporation; fluorine process applications; hafnium oxide-oxynitride; interface trap densities; Charge carrier processes; Dielectrics; High K dielectric materials; Logic gates; MOSFET circuits; Passivation; Silicon; $hbox{HfO}_{2}$; Charge detrapping; fluorine;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2010.2064753