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Considérations sur les impacts du champ électrique et du confinement physique sur la constante de diffusion et la durée de vie des porteurs dans des composants à jonction pn contrôlés par grille

Consideration on Impacts of Electric Field and Physical Confinement on Diffusion Constant and Carrier Lifetime in Insulated-Gate pn-Junction Devices


Yasuhisa Omura
KansaiI University
Japan



Publié le 8 janvier 2020   DOI : 10.21494/ISTE.OP.2020.0439

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This paper discusses the impacts of electric field and physical confinement around the pn-junction on the diffusion constant and carrier lifetime of various pn-junction devices fabricated on silicon-on-insulator (SOI) substrates. The discussion will introduce the key points leading to a fuller understanding of the physics ruling the steep transfer characteristics of ‘zero subthreshold swing and zero impact ionization field-effect transistor (Z2-FET)’ fabricated on SOI substrates. First, many past experimental results of silicon-on-insulator lateral, unidirectional, bipolar-type insulated-gate transistors (SOI Lubistor) are introduced to elucidate the current-voltage characteristics of recent insulated-gate silicon-on-insulator (SOI) pn-junction devices. Advanced physics-based models are introduced to understand the physical mechanisms that should be targeted to understand the transfer characteristics of self-aligned gate SOI Luibistor, offset-gate SOI Lubistor, and Z2-FET. By combining theoretical considerations and experimental results, the physics that may determine the operating characteristics of those devices are identified from the impact of electric field and physical confinement around the pn-junction on the carrier diffusion process.

This paper discusses the impacts of electric field and physical confinement around the pn-junction on the diffusion constant and carrier lifetime of various pn-junction devices fabricated on silicon-on-insulator (SOI) substrates. The discussion will introduce the key points leading to a fuller understanding of the physics ruling the steep transfer characteristics of ‘zero subthreshold swing and zero impact ionization field-effect transistor (Z2-FET)’ fabricated on SOI substrates. First, many past experimental results of silicon-on-insulator lateral, unidirectional, bipolar-type insulated-gate transistors (SOI Lubistor) are introduced to elucidate the current-voltage characteristics of recent insulated-gate silicon-on-insulator (SOI) pn-junction devices. Advanced physics-based models are introduced to understand the physical mechanisms that should be targeted to understand the transfer characteristics of self-aligned gate SOI Luibistor, offset-gate SOI Lubistor, and Z2-FET. By combining theoretical considerations and experimental results, the physics that may determine the operating characteristics of those devices are identified from the impact of electric field and physical confinement around the pn-junction on the carrier diffusion process.

Thin SOI semiconductor wire pn-junction self-aligned gate SOI Lubistor offset-gate SOI Lubistor Z2-FET minority carrier lifetime bipolar ambipolar

Thin SOI semiconductor wire pn-junction self-aligned gate SOI Lubistor offset-gate SOI Lubistor Z2-FET minority carrier lifetime bipolar ambipolar