Cliff's Current Research Project

Optimization of CMOS for Low Temperature Operation


Principal Investigator: Jason Woo

Stanford Nanofabrication Facility (SNF) User: Clifford Hwang

Organization: Electrical Engineering Department, Universty of California, Los Angeles.

Start date: February 1996


Project Objectives:

- Develop a process flow for fabricating 0.25 um CMOS for low temperature operation.

- Determine design parameters necessary to achieve maximize performance and reliability at low temperatures.


Technical Approach:

- TCAD tools will be used to study the impact of certain process steps on device and circuit performance.

- Using simulation results, device fabrication will be performed at the Stanford Nanofabrication Facility.


1996 Accomplishments:

- Through careful and proper design, a 2-3x improvement in performance versus room temperature is possible. (see below)

- Test chip mask has been designed and fabricated.

- Thin gate oxide integrity (using both n+ and p+ poly gates) have been evaluated with good results.

- First transistor run scheduled to start November 1996.


Bibliography:

- "Process Modification for Improved Low Temperature CMOS Performance", Cliff Hwang, Ching Jenq, Bob Hammond, Jason Gillick, and Jason Woo, Workshop on Low Temperature Electronics II, Leuven, Belgium, June 26-28, 1996.


Questions or comments? Contact [email protected]

Last updated: 12/15/96


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