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BEOL Three-Dimensional Stackable Oxide Semiconductor CMOS Inverter with a High Voltage Gain of 233 at Cryogenic Temperatures
Nano Letters ( IF 9.6 ) Pub Date : 2024-12-20 , DOI: 10.1021/acs.nanolett.4c04701
Yiyuan Sun, Ying Xu, Zijie Zheng, Yuxuan Wang, Yuye Kang, Kaizhen Han, Wei Shi, Jinyong Wang, Xiao Gong

Targeting high-performance computing at cryogenic temperatures, we report back-end-of-line (BEOL)-compatible p-type Te-TeOx field effect transistors (FETs) deposited using a sputtering method that is cost-effective, large-scale manufacturable, and highly controllable. Combined with the indium tin oxide channel n-FETs employing a common gate and HfO2 gate dielectric, BEOL three-dimensional stackable oxide semiconductor complementary metal oxide semiconductor (CMOS) inverters were further realized, demonstrating excellent threshold voltage matching, with a high voltage gain of 132 with a 2 V supply voltage (VDD) at room temperature. At cryogenic temperatures, the CMOS inverter exhibits significantly enhanced performance, achieving a voltage gain of 233 at a VDD of 2 V with a wide noise margin of 86%. Even at an ultralow VDD of 0.5 V, the CMOS inverter maintains solid performance with an exceptionally low power consumption of <60 pW.
更新日期:2024-12-20
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