He has published more than 300 peer-reviewed journal articles with his graduate students and research associates, and presented about 200 invited lectures and 60 contributed papers in China, Europe, Japan, Taiwan and in the United States on transistor physics, technology and evolution.
[6] Sah also had a younger brother Chih-Han who was a mathematician and professor at the State University of New York at Stony Brook.
His industrial career in solid-state electronics began with William Shockley in 1956 and continued at Fairchild Semiconductor Corporation in Palo Alto from 1959 to 1964 until he became a professor of physics and electrical engineering at the University of Illinois for 25 years (1962–1988).
Under the management of Gordon E. Moore, Victor H. Grinich and Robert N. Noyce at Fairchild, Sah directed a 64-member Fairchild Physics Department on the development of the first generation manufacturing technologies (oxidation, diffusion, epitaxy growth, and metal conductor thin film deposition) for volume production of silicon bipolar and MOS transistors and integrated circuit technology including oxide masking for impurity diffusion, stable silicon (Si) MOS transistor, the CMOS circuit, origin of low-frequency noise, the MOS transistor model used in the first circuit simulator, thin film integrated resistance and the Si epitaxy process for bipolar integrated circuit production.
[8] In 1963, Sah invented the CMOS (complementary MOS) semiconductor device fabrication process with Frank Wanlass at Fairchild.
[2] He was the founding editor (1991) of the International Series on the Advances in Solid State Electronics and Technology (ASSET)[9] which has published three titles by invited authors (1990s) and eight monographs (2007–2013) by invited authors on compact modelling of devices for computer aided design of integrated circuits, all with the World Scientific Publishing Company, Singapore.