The Japan Society of Applied Physics

[PS-1-12] Engineering Oxidation State in Interfacial Layer of Ge nMOSFET with Ozone and Hydrogen Plasma Treatments on Ge

Cheng-Hsueh Wu1, Kuei-Shu Chang-Liao1, Dun-Bao Ruan2 (1. National Tsing Hua University (Taiwan), 2. Fuzhou University (China))

https://doi.org/10.7567/SSDM.2023.PS-1-12

An O3 plasma treatment on Ge was proposed for Ge MOS device. Due to the reduction of unstable GeOX, a Ge p-substrate MOS device with O3+H2 plasma treatment exhibits an ultra-thin EOT value, an acceptable gate leakage current, a lower DIT value and fewer border traps. Also, a highest ION, a lowest S.S. value, and a highest ION/IOFF of Ge nMOSFET are obtained with O3+H2 plasma treatment.