By Topic

Behavior Analysis of an LDD Poly-Si TFT Using 2-D Device Simulation

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Kimura, M. ; Dept. of Electron. & Inf., Ryukoku Univ., Otsu, Japan

We have analyzed the device behavior of a poly-Si thin-film transistor (TFT) with a lightly doped drain (LDD) structure using 2-D device simulation. It is found that the reason that the on current does not fall very much is that the electron channel oozes from the channel region to the LDD region and the electric current paths spread to the entire LDD region. On the other hand, the reason that the off current is effectively reduced is undoubtedly that the electric field at the interface between the channel and LDD regions is weakened. However, it should be noted that the depletion region is formed at the drain edge owing to the “pseudo” space-charge region in the channel region, where the carrier density is much lower than in the other channel region, although the net space-charge does not exist.

Published in:

Electron Devices, IEEE Transactions on  (Volume:59 ,  Issue: 3 )