Degradation Dependent on Channel Width in Sequential Lateral Solidified Poly-Si Thin Film Transistors

Autor: Chrong Jung Lin, Hsing-Yi Liang, Hung-Tse Chen, Szu-I Hsieh, Ya-Chin King
Rok vydání: 2007
Předmět:
Zdroj: 2007 IEEE International Reliability Physics Symposium Proceedings. 45th Annual.
DOI: 10.1109/relphy.2007.369568
Popis: Sequential lateral solidification (SLS) technology developed for crystallizing amorphous Si enlarges grain size effectively. However, thin-film transistors made by SLS suffer reliability issues possibly due to the innate sub-grain boundaries parallel to the drain current direction as a result of the solidification process. In this study, we report the first-time observed channel-width- dependent degradation on these devices after hot carrier stress. A model was proposed and verified through the simulated sub-circuit characteristics, which successfully explains the degraded transistor behavior and its width dependence.
Databáze: OpenAIRE