Dr. Behrang H. Hamadani is a physicist and a technical staff member in the Heat Transfer and Alternative Energy Systems Group of the Energy and Environment Division (EED) of the Engineering Laboratory (EL) at the National Institute of Standards and Technology (NIST). Behrang joined the Heat Transfer and Alternative Energy Systems Group in November of 2010. His research at NIST is centered on electronic and electro-optical measurements and characterization of photovoltaic materials, solar cells and modules. His particular areas of interest include spectral response and irradiance measurement techniques, electronic defects measurements through techniques of impedance spectroscopy, modulated photocurrent spectroscopy, thermography and pulse-probe techniques, and charge carrier lifetime measurements on both crystalline and thin-film photovoltaic materials. The ultimate objective of this research is to accurately predict device performance under standard reporting conditions and also understand the physical mechanisms that hinder achievement of high efficiency cells and a reliable performance in the field.
Dr. Hamadani has significant prior experience in nanoscale characterization of materials and devices using techniques of scanning probe microscopy. He has published several papers on nanoscale photocurrent measurements using a photoconductive atomic force microscopy technique. As a Ph.D. student and through the early years of his career at NIST, he conducted many years of research on charge transport and electronic properties of thin film organic and inorganic transistors.
Dr. Hamadani has published more than 30 journal articles and regularly attends conferences and other academic venues to present his research findings. He is currently a member of the American Physical Society and the ASTM E44 standard committee on solar energy and contributes to PV standards revisions. He frequently serves as a reviewer for journal publications, as well as serving as a panelist on the National Science Foundation proposal review committees and other funding agencies on topics related to energy, electronic materials and device physics. He also occasionally teaches fundamental physics courses to college students.
Energy and Environment Division
Heat Transfer and Alternative Energy Systems Group
Rice University, Ph.D., Physics, 2007
Rice University, M.S., Physics, 2004
University of Texas at Dallas, B.S., Physics, 2001