Internal Thermoelectric Cooling in Nanosheet Gate-All-Around FETs Using Schottky Drain Contacts
2021
Nanosheet gate-all-around field-effect transistors (NS GAAFETs) suffer from self-heating effects (SHEs), degrading their performance. This work demonstrates that using a Schottky barrier drain contact facilitates simultaneous optimization of the thermal resistance ( $R_{{\text {th}}}$ ) and ON-current, leading to both ameliorated device performance and thermal reliability. Synopsis Sentaurus TCAD results delineate that thermoelectric cooling at the Schottky drain alleviates the SHEs reducing the maximum lattice temperature ( ${T}\,_{L}^{{\text {max}}}$ ) of up to 20.12 K compared to that at an ohmic drain contact.
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