Electron mobility in thin In0.53Ga0.47As channel
Eduard Cartier, Amlan Majumdar, et al.
ESSDERC 2017
The net charge state was probed of metal-oxide-semiconductor gate stacks consisting of In0.53Ga0.47As /high-κ dielectric/5 nm TiN, for both Al2O3 and HfO2 dielectrics, via investigation of band bending at the InGaAs/high-κ interface. Using pump-probe photoelectron spectroscopy, changes to band bending were studied for each sequential layer deposited onto the InGaAs substrate and subsequent annealing up to 600 °C. Two behavioral regions were observed in annealing studies: (1) a lower temperature (<350°C) region, attributed to changes at the high-κ/TiN interface, and (2) a higher temperature region (> 350°C), associated with a net positive charge increase within the oxide. These band bending measurements delineate the impact of processing steps inherently inaccessible via capacitance-voltage electrical characterization.
Eduard Cartier, Amlan Majumdar, et al.
ESSDERC 2017
S. Lee, Cheng-Wei Cheng, et al.
IEDM 2018
Martin M. Frank, Glen D. Wilk, et al.
Applied Physics Letters
Kingsuk Maitra, Barry P. Linder, et al.
PRiME/ECS Meeting 2005