Analytical Drain Current Model for Amorphous and Polycrystalline Silicon Thin-Film Transistors at Different Temperatures Considering Both Deep and Tail Trap States

2018 ◽  
Author(s):  
Hongyu He ◽  
Yuan Liu ◽  
Binghui Yan ◽  
Xinnan Lin ◽  
Xueren Zheng ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Film Transistors ◽  
Polycrystalline Silicon ◽  
Current Model ◽  
Drain Current ◽  
Trap States ◽  
Silicon Thin Film ◽  
Different Temperatures

Surface-Potential-Based Drain Current Model for Polycrystalline Silicon Thin-Film Transistors

2008 ◽  
Vol 47 (10) ◽  
pp. 7798-7802 ◽  
Author(s):  
Hiroshi Tsuji ◽  
Tsuyoshi Kuzuoka ◽  
Yuji Kishida ◽  
Yoshiyuki Shimizu ◽  
Masaharu Kirihara ◽  
...  
Keyword(s):  
Thin Film ◽  
Surface Potential ◽  
Thin Film Transistors ◽  
Polycrystalline Silicon ◽  
Current Model ◽  
Drain Current ◽  
Silicon Thin Film

EFFECT OF TRAP STATES AT THE OXIDE-SILICON INTERFACE IN POLYCRYSTALLINE SILICON THIN-FILM TRANSISTORS

2008 ◽  
Vol 22 (30) ◽  
pp. 5357-5364
Author(s):  
NAVNEET GUPTA
Keyword(s):  
Thin Film ◽  
Thin Film Transistors ◽  
Polycrystalline Silicon ◽  
Gate Oxide ◽  
Oxide Thickness ◽  
State Density ◽  
Trap States ◽  
Silicon Thin Film ◽  
Gate Oxide Thickness ◽  
Silicon Interface

This work presents the study of the effect of trap states at the oxide-silicon interface in lightly doped polycrystalline silicon thin-film transistors with large grains. In this study, it is assumed that the oxide-silicon interface traps are evenly distributed throughout the interface region and single grain boundary is present in the channel of poly-Si TFT. It is shown that improved device characteristics can be obtained by reducing the gate oxide thickness. It is also observed that as gate oxide thickness decreases for a constant value of trap state density in the oxide-silicon interface, the gate voltage required for channel formation is lowered and leads to a decrease in threshold voltage of the device. Calculated and experimental results are also found to be well consistent with each other.

Sign in / Sign up

Export Citation Format

Share Document