Mechanism Analysis of Off-Leakage Current in an LDD Poly-Si TFT Using Activation Energy
In: IEEE Electron Device Letters, Jg. 32 (2011-06-01), S. 764-766
Online
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Zugriff:
We have analyzed the mechanism of off-leakage current in an lightly doped drain (LDD) poly-Si thin-film transistor by investigating the activation energy Ea. It is found that Ea decreases as the gate and drain voltages increase. We have also discussed the mechanism using a device simulator. It is found that a hole channel is lightly formed in the LDD region, and a pseudo p-n junction appears at the junction between the LDD and drain regions. The aforementioned experimental behavior of Ea is because the electric field increases there. These results suggest that the off-leakage current is caused by the phonon-assisted tunneling with Poole-Frenkel effect at the junction between the LDD and drain regions.
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Mechanism Analysis of Off-Leakage Current in an LDD Poly-Si TFT Using Activation Energy
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Autor/in / Beteiligte Person: | Kimura, M. ; Nakashima, A |
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Zeitschrift: | IEEE Electron Device Letters, Jg. 32 (2011-06-01), S. 764-766 |
Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 2011 |
Medientyp: | unknown |
ISSN: | 1558-0563 (print) ; 0741-3106 (print) |
DOI: | 10.1109/led.2011.2132112 |
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