Roster | Timothy A. Gessert

Timothy A. Gessert

Trustee (2018-2020)
Gessert Consulting, LLC
29801 Kennedy Gulch Road
Conifer, CO 80433
Tel: 720-369-3174
email: tim_gessert @

TIMOTHY A. GESSERT is the Principal and Managing Member of Gessert Consulting, LLC (Conifer, CO), and a former/retired Principal Scientist at the National Renewable Energy Laboratory (NREL, Golden, CO).  His 35+ years of research spans various technologies and materials for photovoltaic and other applications including GaAs, InP, Si, CuInGaSe2, and CdTe materials, as well as development of advanced transparent conducting oxides (TCOs).  Activities have included establishment of vacuum processes and equipment, development of photovoltaic absorbers and contact systems, material and performance modeling, and external-loss analysis.  Activities of Gessert Consulting use these foundations to assist private and public institutions in development and assessment of vacuum processes and related products.  Activities also continue to include mentoring graduate students from institutions such as Colorado School of Mines, Colorado State University, University of Toledo, Vanderbilt University, and University of Illinois at Chicago.  Tim has collaboratively published over 230 papers and 6 book chapters, and has over 30 awarded or pending US patents.  Tim received his B.Sc. in physics from University of Wisconsin-River Falls in 1982, M.Sc. in physics from Colorado School of Mines in 1984, and Ph.D. in applied physics from University of Wales - College of Cardiff, in 1996.  Tim is a member (since 1986) and Fellow (since 2011) of the AVS.  He has served as Vacuum Technology Division Chair (2008), on the AVS Board of Directors (2014-2015), and AVS Recommended Practices Committee Chair (2012-2015).  Tim is presently serving on the Chair of the AVS Educational Committee.  He has also been a long-term member of the Executive Board of the Rocky Mountain Chapter of the AVS, holding positions as Executive Chair, Executive Secretary, and Technical Symposium Chair.  Tim has been active (since 1998) in developing and teaching AVS short courses including: Fundamentals of Vacuum Technology, Advanced Leak Detection, Vacuum System Design, Contamination Control in Vacuum Systems, Science and Applications of Transparent Conducting Oxides, UHV System Design and Practices, and Maintenance of Operation of Vacuum Pumping Systems.  Tim has also been a long-term member of the Society of Vacuum Coaters (SVC), the Materials Research Society (MRS), the IEEE, the Institute of Physics (IOP, UK), and is an Associate Editor of the Elsevier journal Thin Solid Films.  He has served on numerous conference and program committees, including MRS Spring Meetings, SVC Technical Conferences, International Symposia on Optoelectronic Materials and Devices, IEEE Photovoltaics Specialists Conferences, and the U.S. Workshops on the Physics and Chemistry of II-VI Materials.